USPTO Examiner LEUNG JENNIFER A - Art Unit 1774

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
18860885BIS(FLUOROSULFONYL)IMIDE IMPURITY REMOVAL AND PURIFICATION SYSTEM AND BIS(FLUOROSULFONYL)IMIDE IMPURITY REMOVAL AND PURIFICATION METHODOctober 2024August 2025Allow911NoNo
18816956High-Efficiency System for Converting Limestone to Slaked LimeAugust 2024May 2025Abandon910YesNo
18766604SYSTEMS AND METHODS FOR THE ON-BOARD PRODUCTION OF HYDROGEN FROM AMMONIA FOR FUELING AN INTERNAL COMBUSTION ENGINE THAT REQUIRES NO FOSSIL FUEL PROMOTORJuly 2024September 2025Allow1430YesNo
18643247APPARATUS AND METHODS FOR SOLID PHASE PEPTIDE SYNTHESIS TO MINIMIZE SOLVENT UTILIZATIONApril 2024January 2025Allow921YesNo
18607293MODULAR SYSTEM FOR RENEWABLE FUEL GENERATIONMarch 2024April 2025Allow1321YesNo
18419661REACTION INTENSIFICATION STRUCTUREJanuary 2024March 2024Allow200NoNo
18544146SYSTEMS AND METHOD FOR AUTOMATED OLIGONUCLEOTIDE SYNTHESISDecember 2023March 2025Allow1521YesNo
18538049AMMONIA DECOMPOSITION CATALYST SYSTEMSDecember 2023January 2025Allow1310NoNo
18520546Systems, Methods and Apparatus for Producing Sustainable Aviation FuelNovember 2023November 2024Allow1210YesNo
18560517CO2 CONVERSION DEVICENovember 2023September 2024Allow1010NoNo
18490430Reactor for the Conversion of Hydrocarbons and MethodOctober 2023March 2026Allow2941NoNo
18241321SYSTEMS AND METHODS FOR THE ON-BOARD CATALYTIC PRODUCTION OF HYDROGEN FROM PHASE-CONTROLLED GASEOUS AMMONIASeptember 2023September 2025Allow2530YesNo
18222366Method and System for Converting Non-Methane Hydrocarbons to Recover Hydrogen Gas and/or Methane Gas TherefromJuly 2023March 2025Allow2020NoNo
18040397MOVING BED REACTOR FOR HYDROCARBON PYROLYSISFebruary 2023July 2025Allow3021NoNo
18086487SYSTEMS AND METHODS FOR SYNTHESIZING CHEMICAL PRODUCTS, INCLUDING ACTIVE PHARMACEUTICAL INGREDIENTSDecember 2022February 2026Allow3710NoNo
18080843Pilot-Scale Supercritical Water Oxidation Oil and Hydrogen Production System Capable of Realizing Long-Distance Multi-Stage Heating of Organic RockDecember 2022June 2023Allow710NoNo
18075318METHOD OF CONVERTING COPPER CYANIDE TO COPPER OXIDE AND SYSTEM THEREOFDecember 2022December 2025Abandon3611NoNo
18072179ADIABATIC MULTI-STAGE REACTORS FOR HYDROGEN PRODUCTION AND RELATED SYSTEMS AND METHODSNovember 2022March 2026Allow4021NoNo
17994537SYSTEM AND METHOD OF REDUCING OXIDANTS IN A CHEMICAL STREAMNovember 2022July 2024Abandon2020NoNo
18055727PEPTIDE SYNTHESIS INSTRUMENTATIONNovember 2022August 2023Allow910YesNo
17929478SUPPORT STRUCTURE FOR STRUCTURED CATALYST PACKINGSSeptember 2022June 2024Allow2120NoNo
17897341AIR PURIFIERAugust 2022March 2026Abandon4210NoNo
17802543REGENERATION DEVICE, DEVICE FOR PREPARING LOW-CARBON OLEFINS, AND USE THEREOFAugust 2022September 2024Allow2510NoNo
17890064SOLID-LIQUID PHASE REACTOR FOR PREPARING POWDER PRODUCTAugust 2022December 2024Allow2820NoNo
17887701PULSED COMPRESSION REACTORS AND METHODS FOR THEIR OPERATIONAugust 2022November 2023Allow1510NoNo
17879769GASIFICATION REACTOR ADAPTABLE FOR FEEDSTOCK WITH WIDE PARTICLE SIZE DISTRIBUTIONAugust 2022May 2023Allow1010NoNo
17815848AMMONIA SYNTHESIS CONVERTER AND METHOD FOR SMALL PRODUCTION UNITSJuly 2022June 2023Allow1021NoNo
17875269Combined Hydrothermal Liquefaction and Catalytic Hydrothermal Gasification System and Process for Conversion of Biomass FeedstocksJuly 2022February 2024Allow1820NoNo
17759405Autoclave Reactor System Comprising an Agitator with Polycrystalline Diamond BearingsJuly 2022October 2023Abandon1410NoNo
17848305SYSTEM AND METHOD FOR RECOVERING CONSTITUENTS FROM BATTERIESJune 2022January 2026Allow4311NoNo
17785926A CONTINUOUS PRODUCTION SYSTEM FOR ALCOHOL ESTER C-12June 2022September 2025Allow3910NoNo
17785525GAS/LIQUID OLIGOMERIZATION REACTOR COMPRISING TRANSVERSE INTERNALSJune 2022February 2025Allow3220NoNo
17757084Process for performing a pyrolysis of hydrocarbons in an indirectly heated rotary drum reactorJune 2022November 2023Abandon1710NoNo
17836853Apparatus for Production of Lead 212 IsotopeJune 2022March 2023Allow911NoNo
17831674FUEL PRODUCTION SYSTEMJune 2022October 2023Allow1710YesNo
17777798Polymerization Reactor for Production of Super Absorbent PolymerMay 2022August 2025Allow3910NoNo
17775834POST-PROCESSING APPARATUSMay 2022February 2024Allow2120YesNo
17774240POLYMERIZATION INSTALLATION WITH INTEGRATED COMBINED ABSORPTION-DIFFUSION AND ABSORPTION-CONDENSATION UNIT AND ITS APPLICATION FOR POLYMER AND COPOLYMER PREPARATIONMay 2022April 2024Allow2420NoNo
17732171APPARATUS FOR DISTRIBUTING FEED WITH A CLUSTER OF ORIFICES ON A SIDE OF THE DISTRIBUTORApril 2022June 2025Allow3750NoNo
17768428STRUCTURED CROSS-CHANNEL PACKING ELEMENT WITH REDUCED MATERIAL REQUIREMENTApril 2022May 2025Allow3710NoNo
17710908Medical Waste Treatment System and MethodMarch 2022August 2025Abandon4111NoNo
17697359AIR TREATMENT APPLIANCE CONFIGURED AS A SUBSTITUTE FOR A LIGHT BULB OR FOR A HANGING LAMPMarch 2022August 2025Abandon4101NoNo
17688371METHOD AND SYSTEM FOR THE PRODUCTION OF METHANOLMarch 2022March 2024Allow2420NoNo
17681399Systems, Methods and Apparatus for Producing Sustainable Aviation FuelFebruary 2022September 2023Allow1920YesNo
17678297PROPANE GAS REMOVAL MATERIALFebruary 2022January 2026Allow4721NoNo
17671711PRODUCTION OF RENEWABLE FUELS AND ENERGY BY STEAM/CO2 REFORMING OF WASTESFebruary 2022October 2024Allow3240NoNo
17634227PHOTOCATALYST FILTER MODULEFebruary 2022April 2025Abandon3810NoNo
17581406Process For Producing Methanol And AmmoniaJanuary 2022December 2024Allow3510NoNo
17628124A PROCESS FOR THE SYNTHESIS OF UREAJanuary 2022February 2023Allow1310NoNo
17623620DOOR HANDLE WITH DISINFECTANT FUNCTIONDecember 2021November 2025Abandon4721NoNo
17646018HONEYCOMB STRUCTURE AND EXHAUST GAS PURIFYING DEVICEDecember 2021February 2025Abandon3850YesNo
17623015MICROBIOLOGICAL SANITIZATION AND AIR PURIFICATION SYSTEM FOR HVAC SYSTEM OF A RAILWAY VEHICLEDecember 2021March 2026Abandon5020NoNo
17621564Packing Element Placed Inside a Chamber to Promote Contact Between Circulating FluidsDecember 2021September 2023Abandon2110NoNo
17457323HONEYCOMB FILTERDecember 2021February 2023Allow1450NoNo
17457121METHOD AND SYSTEM FOR AIR VENTILATION, STERILIZATION AND FILTRATIONDecember 2021August 2025Abandon4410NoNo
17531646Fluid Mixing Apparatus and Methods for Mixing and Improving Homogeneity of FluidsNovember 2021November 2023Allow2420YesNo
17608082APPARATUS AND METHOD FOR ESTERIFICATION REACTIONNovember 2021July 2025Allow4421NoNo
17501806RECYCLING APPARATUS FOR A CROSS-LINKED POLYETHYLENE RESIN USING TWIN SCREW EXTRUDEROctober 2021August 2023Allow2210NoNo
17498750SYSTEM AND METHOD FOR MAKING RESIN SOLUTIONSOctober 2021October 2025Allow4821NoNo
17495335Systems, Methods and Apparatus for Producing Sustainable Aviation FuelOctober 2021September 2023Allow2320YesNo
17449970SOLID HYDRIDE FLOW REACTOROctober 2021October 2023Allow2411YesNo
17594044REACTOR FOR ENDOTHERMIC HIGH-TEMPERATURE REACTIONSSeptember 2021August 2025Allow4750YesNo
17489040REACTION KETTLES, POLYPEPTIDE SYNTHESIS CLEAVAGE SYSTEM AND THEIR USE IN POLYPEPTIDE SYNTHESIS OR CLEAVAGESeptember 2021January 2026Abandon5121NoNo
17599138ROBOT FOR AUTOMATICALLY PREVENTING EPIDEMICSSeptember 2021April 2025Allow4310NoNo
17449061PEPTIDE SYNTHESIS INSTRUMENTATIONSeptember 2021September 2023Allow2411NoNo
17441212Fluidized Bed Reactor Apparatus and a Method for Processing Organic Material Using a Fluidized Bed Reactor ApparatusSeptember 2021December 2024Allow3911NoNo
17440000ALKANE CATALYTIC DEHYDROGENATION REACTION DEVICE AND CATALYST REGENERATION DEVICESeptember 2021February 2025Allow4110NoNo
17465296METHOD FOR CONVERTING A GAS COMPRISING CARBON MONOXIDE INTO METHANE BY MEANS OF A CATALYTIC MATERIAL CONTAINING PRASEODYMIUM AND NICKEL ON ALUMINASeptember 2021February 2024Allow2930NoNo
17465139PLASMA DISINFECTION DEVICESeptember 2021December 2024Abandon3910NoNo
17465070AIR TREATMENT SYSTEM WITH AIRFLOW DETECTIONSeptember 2021March 2025Abandon4311NoNo
17412414CO-PRODUCTION OF METHANOL AND AMMONIAAugust 2021May 2023Allow2120NoNo
17408667CO-PRODUCTION OF METHANOL, AMMONIA AND UREAAugust 2021May 2023Allow2120NoNo
17432186Pressure Vessel SystemAugust 2021January 2026Allow5330NoNo
17432083APPARATUS FOR PREPARING OLIGOMERAugust 2021December 2023Allow2820NoNo
17428626APPARATUS AND PROCESS FOR CONVERSION OF AMMONIA INTO OXIDES OF NITROGENAugust 2021December 2025Allow5341NoNo
17426744PREPARATION DEVICE AND PREPARATION METHOD OF AMMONIA GASJuly 2021June 2025Allow4721NoNo
17383556PROCESS FOR PRODUCTION OF USEFUL HYDROCARBON MATERIALS FROM PLASTIC WASTE AND REACTION SYSTEM THEREFORJuly 2021December 2023Allow2830YesNo
17424339REACTOR CASCADE AND METHOD FOR OPERATING A REACTOR CASCADEJuly 2021November 2023Abandon2810NoNo
17310073USE OF RENEWABLE ENERGY IN AMMONIA SYNTHESISJuly 2021March 2026Abandon5641YesNo
17368924INTEGRATED PRODUCTION OF UREA FOR DIESEL EXHAUST FLUID AND UREA AMMONIUM NITRATEJuly 2021September 2024Allow3830NoNo
17369205METHOD AND SYSTEM FOR CONVERTING NON-METHANE HYDROCARBONS TO RECOVER HYDROGEN GAS AND/OR METHANE GAS THEREFROMJuly 2021February 2024Allow3121NoNo
17414052INTERTWINED COIL HEAT EXCHANGERJune 2021February 2024Allow3220YesNo
17344485CHEMICAL SOLUTION SPRAYING DEVICEJune 2021November 2025Abandon5430NoNo
17336287INTEGRATED SMALL AND MEDIUM-SIZED NATURAL GAS STEAM REFORMING REACTOR AND REFORMING REACTION PROCESSJune 2021November 2024Allow4221NoNo
17297081METHOD AND SYSTEM FOR PREPARING HYDROGEN CHLORIDE AND AMMONIA GAS BY USING AMMONIUM CHLORIDEMay 2021August 2025Allow5131NoNo
17328212OZONE-BASED CONTAMINANT ERADICATION SYSTEM AND METHODMay 2021March 2025Allow4520NoNo
17295988Hydrogen GeneratorMay 2021July 2023Abandon2630NoNo
17324596TURBOMACHINE CHEMICAL REACTOR AND METHOD FOR CRACKINGMay 2021November 2021Allow610NoNo
17293647CATALYST BED COMPRISING SILVER CATALYST BODIES AND PROCESS FOR THE OXIDATIVE DEHYDROGENATION OF OLEFINICALLY UNSATURATED ALCOHOLSMay 2021January 2024Abandon3201NoNo
17315216INTERMEDIATE GAS CONCENTRATION-REGULATING PISTON PRESSURE DEVICE FOR HIGH-TEMPERATURE AUTOCLAVE AND GAS DISTRIBUTION METHODMay 2021November 2022Allow1810NoNo
17289773LIQUID-SOLID RADIAL MOVING BED REACTION DEVICE AND SOLID ACID ALKYLATION METHODApril 2021January 2025Allow4520NoNo
17244553SANITIZING CABINETApril 2021October 2024Allow4220NoNo
17242627DISINFECTING ASSEMBLY AND METHOD OF USING THE SAMEApril 2021June 2024Allow3710NoNo
17242610Reactor for Pyrolysis Conversion of Hydrocarbon GasesApril 2021July 2023Allow2710NoNo
17223078ORGANIC IODINE TRAPPING APPARATUSApril 2021July 2024Allow4020NoNo
17223560Autonomous Decontamination Device for the Dispersion of Disinfecting, Sanitizing and Barrier Agents for Enclosed StructuresApril 2021June 2024Abandon3910NoNo
17280276CATALYTIC INERTING SYSTEM WITH FUEL VAPOR ENRICHMENTMarch 2021April 2024Allow3710YesNo
17278486RADIAL OR AXIAL-RADIAL CHEMICAL REACTOR WITH A FINE CATALYSTMarch 2021October 2024Allow4320NoNo
17277971SYSTEM AND METHOD FOR PRODUCING STEELMarch 2021October 2025Allow5421YesNo
17277404Air Purification DeviceMarch 2021September 2024Allow4210NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner LEUNG, JENNIFER A.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
19
Examiner Affirmed
18
(94.7%)
Examiner Reversed
1
(5.3%)
Reversal Percentile
21.9%
Lower than average

What This Means

With a 5.3% 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
42
Allowed After Appeal Filing
3
(7.1%)
Not Allowed After Appeal Filing
39
(92.9%)
Filing Benefit Percentile
12.3%
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, 7.1% of applications that filed an appeal were subsequently allowed. This appeal filing benefit rate is in the bottom 25% across the USPTO, indicating that filing appeals is less effective here than in most other areas.

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 LEUNG, JENNIFER A - Prosecution Strategy Guide

Executive Summary

Examiner LEUNG, JENNIFER A works in Art Unit 1774 and has examined 707 patent applications in our dataset. With an allowance rate of 63.1%, this examiner allows applications at a lower rate than most examiners at the USPTO. Applications typically reach final disposition in approximately 36 months.

Allowance Patterns

Examiner LEUNG, JENNIFER A's allowance rate of 63.1% places them in the 23% 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 LEUNG, JENNIFER A receive 2.21 office actions before reaching final disposition. This places the examiner in the 61% percentile for office actions issued. This examiner issues a slightly above-average number of office actions.

Prosecution Timeline

The median time to disposition (half-life) for applications examined by LEUNG, JENNIFER A is 36 months. This places the examiner in the 35% percentile for prosecution speed. Prosecution timelines are slightly slower than average with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a +13.0% benefit to allowance rate for applications examined by LEUNG, JENNIFER A. This interview benefit is in the 50% percentile among all examiners. Recommendation: Interviews provide a below-average benefit with this examiner.

Request for Continued Examination (RCE) Effectiveness

When applicants file an RCE with this examiner, 16.4% of applications are subsequently allowed. This success rate is in the 13% 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 50.2% of cases where such amendments are filed. This entry rate is in the 76% percentile among all examiners. Strategic Recommendation: This examiner is highly receptive to after-final amendments compared to other examiners. Per MPEP § 714.12, after-final amendments may be entered "under justifiable circumstances." Consider filing after-final amendments with a clear showing of allowability rather than immediately filing an RCE, as this examiner frequently enters such amendments.

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 36.7% of appeals filed. This is in the 6% 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, 45.5% are granted (fully or in part). This grant rate is in the 39% percentile among all examiners. Strategic Note: Petitions show below-average success regarding this examiner's actions. Ensure you have a strong procedural basis before filing.

Examiner Cooperation and Flexibility

Examiner's Amendments: This examiner makes examiner's amendments in 2.1% of allowed cases (in the 75% 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.
  • Consider after-final amendments: This examiner frequently enters after-final amendments. If you can clearly overcome rejections with claim amendments, file an after-final amendment before resorting to an RCE.
  • 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.