USPTO Examiner SINGH PREM C - Art Unit 1771

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
18691096HEAT INTEGRATION WITH PYROLYSIS OIL AND A HEAT TRANSFER MEDIUM FOR CHEMICAL FACILITIESMarch 2024March 2026Allow2410NoNo
18003505DEVICE AND METHOD FOR PRODUCING SUCROSE-6-ESTERDecember 2022February 2026Allow3820NoNo
18147233COMPOSITIONS, METHODS, AND APPARATUSES FOR CATALYTIC COMBUSTIONDecember 2022January 2026Allow3720NoNo
18067334CONTINUOUS SYNTHESIS SYSTEM OF UREADecember 2022October 2025Allow3410NoNo
18062065System and process for oxy-fuel calcination of lime-bearing sludgeDecember 2022February 2026Allow3910YesNo
17317891CONDENSING MECHANISM OF DISTILLED WATER DISPENSERMay 2021May 2023Abandon2410NoNo
15281314Air-liquid heat exchangerSeptember 2016March 2019Abandon3020NoNo
14117600METHOD OF PROCESSING A BITUMINOUS FEED AND CONTAMINATED WATERNovember 2013October 2014Abandon1100NoNo
14112203Method of Processing a Bituminous Feed By Staged Addition of a Bridging LiquidOctober 2013October 2014Abandon1200NoNo
13877847OPTIMIZED NUTRITIONAL FORMULATIONS, METHODS FOR SELECTION OF TAILORED DIETS THEREFROM, AND METHODS OF USE THEREOFApril 2013October 2022Abandon6051YesYes
12807321Multi effect distiller with falling film evaporator and condenser cellsSeptember 2010May 2013Abandon3310NoNo
12852724CONTINUOUS PROCESS AND PLANT DESIGN FOR CONVERSION OF BIOGAS TO LIQUID FUELAugust 2010March 2012Allow2010NoNo
12829830Method of Dissolving a Gaseous Hydrocarbon Into a Liquid HydrocarbonJuly 2010July 2011Abandon1310NoNo
12793340METHOD AND APPARATUS FOR REGENERATING CATALYST DURING OXYGENATES TO OLEFINS REACTIONJune 2010March 2012Allow2110NoNo
12657954ISOOCTENE/ISOOCTANE PROCESSFebruary 2010March 2012Allow2610NoNo
12572575SELECTIVE CATALYTIC CRACKING PROCESS OF NATURAL GAS LIQUID FRACTION TO LIGHT OLEFINS AND OTHER PRODUCTSOctober 2009August 2011Abandon2210NoNo
12529912METHOD FOR PRODUCING LIGHT OLEFINS FROM METHANOL OR/AND DIMETHYL ETHERSeptember 2009February 2012Allow2910NoNo
12097392SELF-SUSTAINING CRACKING OF HYDROCARBONSSeptember 2009February 2012Allow4410NoNo
12583276DIRECT COAL LIQUEFACTION WITH INTEGRATED PRODUCT HYDROTREATING AND CATALYST CASCADINGAugust 2009March 2012Allow3110YesNo
12538606MERCURY REMOVAL FROM CRUDE OILAugust 2009November 2011Allow2730YesNo
12297015PROCESS FOR PREPARING ACETYLENE BY PARTIAL OXIDATION OF HYDROCARBONSJuly 2009January 2012Allow3910YesNo
12478204PROCESS OF SYNTHESIS GAS CONVERSION TO LIQUID FUELS USING SYNTHESIS GAS CONVERSION CATALYST AND NOBLE METAL-PROMOTED ACIDIC ZEOLITE HYDROCRACKING-HYDROISOMERIZATION CATALYSTJune 2009July 2012Abandon3820NoNo
12431284ENHANCEMENT OF MOLECULAR SIEVE PERFORMANCEApril 2009April 2011Allow2320NoYes
12422417COMPOSITIONS AND PROCESSES FOR SEPARATION OF BITUMEN FROM OIL SAND ORESApril 2009May 2012Abandon3811NoNo
12414779PROCESS AND SYSTEM IMPROVEMENT FOR IMPROVING AND RECUPERATING WASTE, HEAVY AND EXTRA HEAVY HYDROCARBONSMarch 2009December 2011Allow3210NoNo
12415373PROCESS FOR INHIBITING FOULING IN HYDROCARBON PROCESSINGMarch 2009December 2011Allow3310NoNo
12380665Methodology for the chemical and mechanical treatment and cleanup of oily soils, drill cuttings, refinery wastes, tank bottoms, and lagoons/pitsMarch 2009February 2012Abandon3510NoNo
12396192CONSTANT SPECIFIC GRAVITY HEAT MINIMIZATIONMarch 2009November 2011Allow3210YesNo
12396021CARBON STRAND RADIO FREQUENCY HEATING SUSCEPTORMarch 2009December 2011Allow3311NoNo
12372128MERCURY REMOVAL FROM HYDROCARBONSFebruary 2009February 2011Allow2410YesNo
12334967SYSTEM AND METHOD FOR REDUCING DECOMPOSITION BYPRODUCTS IN A METHANOL TO OLEFIN REACTOR SYSTEMDecember 2008October 2011Allow3410NoNo
12274552METHOD AND SYSTEM FOR REMOVING IMPURITIES FROM HYDROCARBON OILS VIA LEWIS ACID COMPLEXATIONNovember 2008April 2012Abandon4110NoNo
12267536CRACKING HYDROCARBONACEOUS MATERIALS WITH HEATING BODIESNovember 2008January 2012Abandon3810NoNo
12285155Distillation tower construction and operationSeptember 2008December 2011Abandon3910NoNo
11997608METHOD FOR DESULFURIZATION OF HYDROCARBON OILSeptember 2008December 2011Abandon4610NoNo
12208410PROCESS FOR THE DEEP DESULFURIZATION OF HEAVY PYROLYSIS GASOLINESeptember 2008January 2012Allow4020NoYes
12204588METHOD AND EQUIPMENT FOR PREPARING ISOBUTYLENE USING TERTIARY BUTYL ALCOHOLSeptember 2008December 2011Abandon3911NoNo
12188636REMOVING AMINES FROM HYDROCARBON STREAMSAugust 2008August 2011Allow3620NoNo
12084094Very Low Sulfur Heavy Crude Oil and Process for the Production ThereofJuly 2008February 2012Abandon4620NoNo
12164946INTEGRATION OF OTO PROCESS WITH DIRECT DME SYNTHESISJune 2008April 2011Allow3410NoNo
12164344OTO QUENCH TOWER CATALYST RECOVERY SYSTEM UTILIZING A LOW TEMPERATURE FLUIDIZED DRYING CHAMBERJune 2008November 2011Abandon4120NoNo
12136843OXYGENATE TO OLEFINS PROCESS INVOLVING SUPERCRITCAL CONDITIONSJune 2008May 2011Allow3510YesNo
12135636DESULFURIZATION PROCESS AND SYSTEMS UTILIZING HYDRODYNAMIC CAVITATIONJune 2008May 2011Allow3520YesNo
12134652GASOLINE ALKYLATE RVP CONTROLJune 2008December 2011Allow4220NoNo
12132130PROCESS AND APPARATUS FOR COOLING LIQUID BOTTOMS FROM VAPOR/LIQUID SEPARATOR DURING STEAM CRACKING OF HYDROCARBON FEEDSTOCKSJune 2008January 2012Allow4420NoNo
12085707Process for Producing OlefinsMay 2008November 2011Abandon4210NoNo
12129020Integrated Processing of Methanol to OlefinsMay 2008November 2013Abandon6020NoYes
12156004DIISOBUTYLENE PROCESSMay 2008July 2011Allow3820NoNo
11813360Method for the Production of Propene from PropaneMay 2008June 2011Abandon4810NoNo
11913425Pyrolysis Systems, Methods of Use Thereof, and Methods of Bio-Oil TransformationMay 2008August 2011Abandon4520NoNo
12121353CONVERSION OF CO-FED METHANE AND HYDROCARBON FEEDSTOCKS INTO HIGHER VALUE HYDROCARBONSMay 2008November 2011Allow4220NoYes
12090398PROCESS FOR THE PRODUCTION OF HIGH-OCTANE HYDROCARBON COMPOUNDS BY THE SELECTIVE DIMERIZATION OF ISOBUTENE CONTAINED IN A STREAM WHICH ALSO CONTAINS C5 HYDROCARBONSApril 2008November 2011Allow4320NoYes
12102223SINGLE-REACTOR PROCESS FOR PRODUCING LIQUID-PHASE ORGANIC COMPOUNDS FROM BIOMASSApril 2008August 2011Allow4020NoYes
12059717METHOD OF CIRCULATING CATALYST BETWEEN A CATALYST REGENERATOR AND AN EXTERNAL CATALYST COOLERMarch 2008January 2011Allow3310NoNo
12047878REDUCING DELETERIOUS EFFECTS OF ALDEHYDES IN OXYGENATES TO OLEFINS REACTIONS WITH CATALYSTS CONTAINING BASIC METAL OXIDESMarch 2008September 2011Allow4230NoNo
12039467RECYCLE OF OLEFINIC NAPHTHAS BY REMOVING AROMATICSFebruary 2008December 2010Allow3410NoNo
12034425RECYCLE OF DME IN AN OXYGENATE-TO-OLEFIN REACTION SYSTEMFebruary 2008May 2011Allow6020NoNo
11793318GASOLINE CRACKINGFebruary 2008October 2011Allow5230NoNo
12069474Method and apparatus for capturing and using heat generated by the production of light olefinsFebruary 2008February 2012Abandon4841NoNo
12068343Process for producing light olefinsFebruary 2008June 2011Abandon4020NoNo
12023459METHOD OF SEPARATING CONDENSED LIQUID FROM AN OLEFIN STREAMJanuary 2008December 2010Allow3410NoNo
11988169DEHYDROGENATION OF MIXED ALCOHOLSJanuary 2008July 2011Allow4220NoYes
11988171REACTIVE DISTILLATION WITH OLEFIN RECYCLEJanuary 2008November 2011Allow4720NoYes
12004843METHODS OF CONVERTING METHANOL FEEDSTOCK TO OLEFINSDecember 2007November 2010Allow3510YesNo
12001432PROPYLENE RECOVERY DURING REGENERATION OF AN OXYGENATE REMOVAL UNITDecember 2007November 2010Allow3510NoNo
11954153FLUIDIZED BED REACTOR WITH BACK-MIXING FOR DEHYDROGENATION OF LIGHT PARAFFINSDecember 2007November 2010Allow3510YesNo
11953307PROCESS FOR DECOKING A FURNACE FOR CRACKING A HYDROCARBON FEEDDecember 2007April 2011Allow4020YesNo
11945161PROCESS FOR THE PRODUCTION OF COMPRESSION IGNITION ENGINE, GAS TURBINE, AND FUEL CELL FUEL AND COMPRESSION IGNITION ENGINE, GAS TURBINE, AND FUEL CELL FUEL BY SAID PROCESSNovember 2007February 2011Abandon3930YesNo
11932533PRODUCTION OF LOW SULPHUR ALKYLATE GASOLINE FUELOctober 2007June 2011Allow4330YesNo
11869763PREPARATION OF COMPONENTS FOR REFINERY BLENDING OF TRANSPORTATION FUELSOctober 2007February 2012Abandon5340NoNo
11910996METHOD AND DEVICE FOR PRODUCING ACETYLENE AND SYNTHESIS GAS BY RAPIDLY MIXING THE REACTANTSOctober 2007January 2011Allow4011YesNo
11866909METHODS FOR PRODUCING A CRUDE PRODUCT AND COMPOSITIONS THEREOFOctober 2007March 2011Abandon4210NoNo
11866281ISOMERIZATION PROCESS USING METAL-MODIFIED SMALL CRYSTALLITE MTT MOLECULAR SIEVEOctober 2007March 2011Abandon4110NoNo
11910028Method for Obtaining a Flow of Hydrocarbons Containing Between 4 and 12 Carbon Atoms Per Molecule, with an Increased Quantity of Linear Alpha-OlefinsSeptember 2007March 2011Abandon4210NoNo
11910020Method for Producing a Stream of Hydrocarbons Containing from 5 to 12 Carbon Atoms Per Molecule and Having an Increased Content in Linear Alpha-OlefinsSeptember 2007February 2011Abandon4010NoNo
11899710Hydrocracking process for fabricating distillate from fisher-tropsch waxesSeptember 2007April 2011Abandon4320NoNo
11899693Fluid catalytic cracking and hydrotreating processes for fabricating diesel fuel from waxesSeptember 2007February 2011Abandon4110NoNo
11718037METHOD AND DEVICE FOR PRODUCING LOWER OLEFINS FROM OXYGENATESSeptember 2007February 2011Allow4521NoNo
11817599Method for Producing Propene From PropaneAugust 2007May 2011Abandon4520NoNo
11894013OLEFIN PRODUCTION UTILIZING A FEED CONTAINING CONDENSATE AND CRUDE OILAugust 2007November 2010Allow3920NoNo
11839597PROCESS FOR PREPARING ISOOLEFINSAugust 2007March 2011Abandon4320YesNo
11839604PROCESS FOR THE DISSOCIATION OF MTBEAugust 2007November 2010Allow3920NoNo
11838340PROCESS FOR THE DISSOCIATION OF MTBEAugust 2007December 2010Allow4020NoNo
11836905CATALYST AND PROCESS FOR PREPARING ISOOLEFINSAugust 2007February 2011Allow4321YesNo
11770236CATALYTIC CHEMICAL REACTION PROCESSJune 2007January 2011Abandon4310NoNo
11722367Method For The Production Of Propene From PropaneJune 2007July 2011Abandon4920NoNo
11812484Rejuvenation process for olefin polymerization and alkylation catalystJune 2007December 2011Abandon5440NoNo
11818233METHOD OF RECOVERING HEAT TRANSFER IN REACTOR AND REGENERATOR EFFLUENT COOLERSJune 2007September 2011Allow5240YesNo
10589048PROCESS FOR PREPARING POLYOLEFINS IN SUSPENSIONJune 2007November 2011Allow6040NoYes
11721247Method for the Production of Propene from PropaneJune 2007June 2011Abandon4820NoNo
11758285PROCESS FOR THE DISSOCIATION OF MTBEJune 2007February 2011Allow4521NoNo
11754596METHOD OF CONVERTING ETHANOL TO BASE STOCK FOR DIESEL FUELMay 2007April 2011Allow4620NoYes
11719726Method and Device for Completely Hydrogenating a Hydrocarbon FlowMay 2007December 2010Abandon4310NoNo
10542167METHOD FOR MAKING INDUSTRIAL CHEMICALSMay 2007August 2010Allow6010NoNo
11744151PROCESS FOR SELECTIVELY HYDROGENATING BUTADIENE IN AN C4 OLEFIN STREAM CONTAINING A CATALYST POISON WITH THE SIMULTANEOUS ISOMERIZATION OF 1-BUTENE TO 2-BUTENEMay 2007January 2012Abandon5640NoNo
10597734LOW TEMPERATURE THERMODYNAMIC CRACKING AND CONVERSION FOR UPGRADING OF HEAVY OILSApril 2007May 2010Allow6030NoNo
11737167PROCESS FOR THE HYDROGENATION OF AROMATICS IN A HYDROCARBON FEEDSTOCK THAT CONTAINS A THIOPHENEIC COMPOUNDApril 2007May 2011Abandon4950NoNo
10574764Surfactant Enhanced Fluid Catalytic Cracking ProcessApril 2007October 2010Abandon5510NoNo
11694309PROCESS AND SYSTEM FOR REDCUING THE OLEFIN CONTENT OF A HYDROCARBON FEED GAS AND PRODUCTION OF A HYDROGEN-ENRICHED GAS THEREFROMMarch 2007May 2012Abandon6020NoNo
10561588Process to Prepare a Lubricating Base OilMarch 2007May 2011Abandon6020NoYes

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner SINGH, PREM C.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
22
Examiner Affirmed
22
(100.0%)
Examiner Reversed
0
(0.0%)
Reversal Percentile
2.9%
Lower than average

What This Means

With a 0.0% reversal rate, the PTAB affirms the examiner's rejections in the vast majority of cases. This reversal rate is in the bottom 25% across the USPTO, indicating that appeals face significant challenges here.

Strategic Value of Filing an Appeal

Total Appeal Filings
58
Allowed After Appeal Filing
14
(24.1%)
Not Allowed After Appeal Filing
44
(75.9%)
Filing Benefit Percentile
32.9%
Lower than average

Understanding Appeal Filing Strategy

Filing a Notice of Appeal can sometimes lead to allowance even before the appeal is fully briefed or decided by the PTAB. This occurs when the examiner or their supervisor reconsiders the rejection during the mandatory appeal conference (MPEP § 1207.01) after the appeal is filed.

In this dataset, 24.1% of applications that filed an appeal were subsequently allowed. This appeal filing benefit rate is below the USPTO average, suggesting that filing an appeal has limited effectiveness in prompting favorable reconsideration.

Strategic Recommendations

Appeals to PTAB face challenges. Ensure your case has strong merit before committing to full Board review.

Filing a Notice of Appeal shows limited benefit. Consider other strategies like interviews or amendments before appealing.

Examiner SINGH, PREM C - Prosecution Strategy Guide

Executive Summary

Examiner SINGH, PREM C works in Art Unit 1771 and has examined 156 patent applications in our dataset. With an allowance rate of 48.1%, this examiner allows applications at a lower rate than most examiners at the USPTO. Applications typically reach final disposition in approximately 46 months.

Allowance Patterns

Examiner SINGH, PREM C's allowance rate of 48.1% places them in the 11% percentile among all USPTO examiners. This examiner is less likely to allow applications than most examiners at the USPTO.

Office Action Patterns

On average, applications examined by SINGH, PREM C receive 2.78 office actions before reaching final disposition. This places the examiner in the 81% percentile for office actions issued. This examiner issues more office actions than most examiners, which may indicate thorough examination or difficulty in reaching agreement with applicants.

Prosecution Timeline

The median time to disposition (half-life) for applications examined by SINGH, PREM C is 46 months. This places the examiner in the 10% percentile for prosecution speed. Applications take longer to reach final disposition with this examiner compared to most others.

Interview Effectiveness

Conducting an examiner interview provides a +39.0% benefit to allowance rate for applications examined by SINGH, PREM C. This interview benefit is in the 86% percentile among all examiners. Recommendation: Interviews are highly effective with this examiner and should be strongly considered as a prosecution strategy. Per MPEP § 713.10, interviews are available at any time before the Notice of Allowance is mailed or jurisdiction transfers to the PTAB.

Request for Continued Examination (RCE) Effectiveness

When applicants file an RCE with this examiner, 14.7% of applications are subsequently allowed. This success rate is in the 11% percentile among all examiners. Strategic Insight: RCEs show lower effectiveness with this examiner compared to others. Consider whether a continuation application might be more strategic, especially if you need to add new matter or significantly broaden claims.

After-Final Amendment Practice

This examiner enters after-final amendments leading to allowance in 25.7% of cases where such amendments are filed. This entry rate is in the 35% percentile among all examiners. Strategic Recommendation: This examiner shows below-average receptiveness to after-final amendments. You may need to file an RCE or appeal rather than relying on after-final amendment entry.

Pre-Appeal Conference Effectiveness

When applicants request a pre-appeal conference (PAC) with this examiner, 0.0% result in withdrawal of the rejection or reopening of prosecution. This success rate is in the 4% percentile among all examiners. Note: Pre-appeal conferences show limited success with this examiner compared to others. While still worth considering, be prepared to proceed with a full appeal brief if the PAC does not result in favorable action.

Appeal Withdrawal and Reconsideration

This examiner withdraws rejections or reopens prosecution in 50.0% of appeals filed. This is in the 15% percentile among all examiners. Of these withdrawals, 36.4% occur early in the appeal process (after Notice of Appeal but before Appeal Brief). Strategic Insight: This examiner rarely withdraws rejections during the appeal process compared to other examiners. If you file an appeal, be prepared to fully prosecute it to a PTAB decision. Per MPEP § 1207, the examiner will prepare an Examiner's Answer maintaining the rejections.

Petition Practice

When applicants file petitions regarding this examiner's actions, 75.0% are granted (fully or in part). This grant rate is in the 80% percentile among all examiners. Strategic Note: Petitions are frequently granted regarding this examiner's actions compared to other examiners. Per MPEP § 1002.02(c), various examiner actions are petitionable to the Technology Center Director, including prematureness of final rejection, refusal to enter amendments, and requirement for information. If you believe an examiner action is improper, consider filing a petition.

Examiner Cooperation and Flexibility

Examiner's Amendments: This examiner makes examiner's amendments in 16.7% of allowed cases (in the 97% percentile). Per MPEP § 1302.04, examiner's amendments are used to place applications in condition for allowance when only minor changes are needed. This examiner frequently uses this tool compared to other examiners, indicating a cooperative approach to getting applications allowed. Strategic Insight: If you are close to allowance but minor claim amendments are needed, this examiner may be willing to make an examiner's amendment rather than requiring another round of prosecution.

Quayle Actions: This examiner issues Ex Parte Quayle actions in 0.0% of allowed cases (in the 7% percentile). This examiner rarely issues Quayle actions compared to other examiners. Allowances typically come directly without a separate action for formal matters.

Prosecution Strategy Recommendations

Based on the statistical analysis of this examiner's prosecution patterns, here are tailored strategic recommendations:

  • Prepare for rigorous examination: With a below-average allowance rate, ensure your application has strong written description and enablement support. Consider filing a continuation if you need to add new matter.
  • Expect multiple rounds of prosecution: This examiner issues more office actions than average. Address potential issues proactively in your initial response and consider requesting an interview early in prosecution.
  • Prioritize examiner interviews: Interviews are highly effective with this examiner. Request an interview after the first office action to clarify issues and potentially expedite allowance.
  • Plan for extended prosecution: Applications take longer than average with this examiner. Factor this into your continuation strategy and client communications.
  • Examiner cooperation: This examiner frequently makes examiner's amendments to place applications in condition for allowance. If you are close to allowance, the examiner may help finalize the claims.

Relevant MPEP Sections for Prosecution Strategy

  • MPEP § 713.10: Examiner interviews - available before Notice of Allowance or transfer to PTAB
  • MPEP § 714.12: After-final amendments - may be entered "under justifiable circumstances"
  • MPEP § 1002.02(c): Petitionable matters to Technology Center Director
  • MPEP § 1004: Actions requiring primary examiner signature (allowances, final rejections, examiner's answers)
  • MPEP § 1207.01: Appeal conferences - mandatory for all appeals
  • MPEP § 1214.07: Reopening prosecution after appeal

Important Disclaimer

Not Legal Advice: The information provided in this report is for informational purposes only and does not constitute legal advice. You should consult with a qualified patent attorney or agent for advice specific to your situation.

No Guarantees: We do not provide any guarantees as to the accuracy, completeness, or timeliness of the statistics presented above. Patent prosecution statistics are derived from publicly available USPTO data and are subject to data quality limitations, processing errors, and changes in USPTO practices over time.

Limitation of Liability: Under no circumstances will IronCrow AI be liable for any outcome, decision, or action resulting from your reliance on the statistics, analysis, or recommendations presented in this report. Past prosecution patterns do not guarantee future results.

Use at Your Own Risk: While we strive to provide accurate and useful prosecution statistics, you should independently verify any information that is material to your prosecution strategy and use your professional judgment in all patent prosecution matters.