USPTO Examiner KEYWORTH PETER - Art Unit 1777

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19237046METHOD FOR TREATING POLLUTED ACIDIC WASTEWATER FROM SMELTING WITH ACTIVATED PYRITE CONCENTRATEJune 2025September 2025Allow300NoNo
19229043INTELLIGENT WASTEWATER PURIFICATION AND TREATMENT DEVICEJune 2025August 2025Allow200NoNo
19111325BICARBONATE REMOVAL FROM MONOETHYLENE GLYCOL-WATER STREAMSMarch 2025October 2025Allow710YesNo
19067547NEUTRALIZATION PROCESSING SYSTEM FOR AMMONIA-CONTAINING WASTE FLUID AND NEUTRALIZATION PROCESSING METHOD FOR AMMONIA-CONTAINING WASTE FLUIDFebruary 2025June 2025Allow401NoNo
19016858SYSTEMS AND METHODS OF REMOVING TOXIC SUBSTANCES FROM WATER USING VERMIFILTRATIONJanuary 2025January 2026Allow1221YesNo
18964828METHODS AND SYSTEMS FOR TREATING BIOLOGICAL CONTAMINANTSDecember 2024January 2026Allow1321NoYes
18957190METHODS OF LIPID RECOVERY AND LEACHATE TREATMENTNovember 2024October 2025Allow1121NoNo
18804147METHOD FOR RECYCLING COPPER-CONTAINING WASTEWATER FROM MICRO-ETCHINGAugust 2024November 2024Allow300NoNo
18785323Treatment Method for Complete Harmless Treatment of Activated Sludge and Complete Resource Utilization of Activated Sludge's ProductsJuly 2024December 2024Allow410NoNo
18782638METHOD FOR FROTH-CONTROLLED FLOTATION OF ARGILLACEOUS LEPIDOLITE OREJuly 2024January 2025Allow610NoNo
18773816Fluid Treatment Tank Having A Laser Welded Distributor PlateJuly 2024May 2025Allow1010NoNo
18769993DAIRY WASTEWATER TREATMENT SYSTEM AND METHODJuly 2024May 2025Allow1000NoNo
18764614PURIFICATION METHODS COMPRISING THE USE OF MEMBRANES OBTAINED FROM BIO-BASED SULFONE POLYMERSJuly 2024October 2025Abandon1501NoNo
18732310FERRATE BASED WATER TREATMENTJune 2024March 2025Allow1001NoNo
18666495SOLAR STILL WATER TREATMENT USING CARBON-BASED EFFERVESCENT TABLETS AND RELATED METHODSMay 2024December 2024Allow701NoNo
18601192SYSTEMS AND METHODS FOR WATER FILTRATIONMarch 2024March 2025Allow1321YesNo
18598281MATERIAL FOR NEUTRALISING AND/OR HARDENING LIQUIDS, A METHOD FOR PRODUCING SAME, AND USESMarch 2024January 2026Abandon2220NoNo
18581673Method of Refining and Recovering Barium Sulfate from Contaminated Water SourcesFebruary 2024March 2025Allow1310NoNo
18545470POLYCYCLIC AZIDE DESULFURIZER AND SYNTHESIS METHOD THEREOFDecember 2023August 2024Allow811NoNo
18527784METHOD AND APPARATUS FOR TREATMENT OF AN ANIMAL PROCESSING WASTEWATER STREAMDecember 2023February 2025Allow1510NoNo
18522304Water Treatment Systems, Devices, and Methods for Fluid PreparationNovember 2023April 2025Allow1711NoNo
18502956SYSTEMS AND METHODS FOR REMOVING PHOSPHORUS FROM WATERNovember 2023May 2025Allow1811NoNo
18380410METHOD FOR GELATION OF A WASTE WATER STREAMOctober 2023February 2025Abandon1610NoNo
18375050POLYESTERAMINES AND POLYESTERQUATSSeptember 2023April 2025Abandon1910NoNo
18371603GALVANIC PROCESS FOR TREATING AQUEOUS COMPOSITIONSSeptember 2023August 2025Allow2220NoNo
18038019SYSTEM AND METHOD FOR EXTRACTING CARBON SOURCE FROM SEWAGE SLUDGE IN SEWER PIPES THROUGH ONLINE ORGANIC AND INORGANIC COMPONENT SEPARATIONSeptember 2023December 2023Allow700NoNo
18336975VACUUM-FLOCCULATION-SOLIDIFICATION INTEGRATED APPARATUS FOR WASTE MUD AND USING METHOD THEREOFJune 2023September 2023Allow300NoNo
18255858SYSTEMS AND METHODS FOR BIOLOGICAL TRANSFORMATION, CONCENTRATION, AND RECOVERY OF SELENIUM FROM WASTEWATERJune 2023December 2025Allow3041YesNo
18037886UREA TREATMENT METHOD AND DEVICEMay 2023March 2026Allow3311NoNo
18319613INTELLIGENT MANUFACTURING SYSTEM AND MANUFACTURING METHOD FOR TERAHERTZ WATER MOLECULE REARRANGEMENTMay 2023September 2023Allow410NoNo
18033707MICROFLOTATION SYSTEM FOR TREATING A BODY OF WATERApril 2023February 2026Abandon3410NoNo
18033552SYSTEMS AND METHODS FOR DESALINATION OF LIQUIDSApril 2023January 2024Allow911YesNo
18303182INTRODUCTION OF AN ADDITIVE TO WATERApril 2023January 2026Allow3311NoNo
18131399METHOD FOR CIRCULARLY PURIFYING METALLURGICAL ARSENIC-CONTAINING ACIDIC WASTE LIQUID AND RECOVERING SULFURApril 2023November 2025Allow3100NoNo
18131444TEMPERATURE SWING SOLVENT EXTRACTION FOR DESCALING OF FEEDSTREAMSApril 2023September 2024Allow1710NoNo
18193681SYSTEM AND METHOD FOR TREATING REVERSE-OSMOSIS CONCENTRATED WATER WITH HIGH TEMPORARY HARDNESSMarch 2023June 2023Allow200NoNo
18193318DEVICE FOR EFFICIENTLY RECYCLING NICKEL IN WASTEWATER AND METHODMarch 2023January 2024Allow1010NoNo
18246161AMINOCARBOXYLIC ACID-FUNCTIONALIZED SACCHARIDE POLYMERS AND METHODS FOR PRODUCTION AND USE THEREOFMarch 2023August 2023Allow400NoNo
18118328REMOVAL AND INHIBITION OF SCALE AND INHIBITION OF CORROSION BY USE OF MOSSMarch 2023January 2026Abandon3430NoNo
18118155DEVICE STRUCTURE FOR MULTISTAGE WATER-AIR SEPARATION OF CLEANING MACHINEMarch 2023September 2025Allow3010NoNo
18177152Polyzirconium Coagulant and Application ThereofMarch 2023September 2024Allow1920YesNo
18173394TREATMENT OF TAILINGS STREAMS WITH ONE OR MORE DOSAGES OF LIME, AND ASSOCIATED SYSTEMS AND METHODSFebruary 2023September 2024Allow1921YesNo
18021371FLUIDICALLY COUPLING WITH ELASTIC STRUCTURE DEFORMABLE BY SEALING ELEMENTFebruary 2023November 2025Allow3311NoNo
18103470COOLING POND WATER TREATMENT SYSTEMJanuary 2023February 2024Allow1310NoNo
18102175ACID-DISPENSING SYSTEM FOR POOLSJanuary 2023February 2026Abandon3601NoNo
18154369AERATED HYDROCYCLONE APPARATUS AND METHOD FOR CYCLONIC FROTH SEPARATIONJanuary 2023November 2024Allow2230NoNo
18094003METHODS OF TREATING WATER TO REMOVE CONTAMINANTS AND WATER TREATMENT PLANTS FOR THE PRACTICE THEREOFJanuary 2023October 2024Abandon2111NoNo
18061147PROCESSES AND SYSTEMS FOR TREATING SOUR WATERDecember 2022October 2023Allow1120YesNo
17994890Methods and systems for streaming current analyzer calibration and reportingNovember 2022May 2024Abandon1821NoNo
17977981METHOD FOR REFINERY WASTEWATER TREATMENT, A SYSTEM AND USES THEREOFOctober 2022February 2026Allow3911NoNo
18048540Systems and Methods for Removing Micro-Particles from a Metalworking FluidOctober 2022May 2024Allow1911NoNo
17968600Automated Methods and Systems for Optimized Zeta Potential Chemical Dosing in Water Treatment SystemsOctober 2022April 2024Allow1810NoNo
17918369RESOURCE UTILIZATION-ORIENTED TREATMENT METHOD FOR SPENT ELECTROLESS NICKEL PLATING BATHOctober 2022May 2025Allow3210NoNo
17962109HAZARDOUS WASTE DISPOSAL SYSTEM AND METHODOctober 2022October 2025Abandon3601NoNo
17962455Production of Nitrogenous Fertilizer from WastewaterOctober 2022October 2023Allow1230NoNo
17917311WATER MANAGEMENT SYSTEM FOR ORE MINING OPERATIONOctober 2022July 2025Allow3410NoNo
17951352Method of Treating a Liquid with NanobubblesSeptember 2022March 2024Abandon1820NoNo
17949751Sewage Treatment MethodSeptember 2022December 2025Abandon3810NoNo
17934070METAL REINFORCED CRYOGENIC TRAP FOR THERMAL DESORBERSeptember 2022February 2026Abandon4110NoNo
17948700VORTEX INLET WITH CURVED GROOVED PLATESeptember 2022January 2026Abandon4010NoNo
17945219MECHANICAL DEMOISTURIZING OF PARTIALLY-DECOMPOSED ORGANIC MATERIALSeptember 2022July 2025Allow3410YesNo
17912033METHOD AND DEVICE FOR TREATING VARIOUS TYPES OF FLUIDSSeptember 2022October 2025Abandon3710NoNo
17939870ACID MINE DRAINAGE TREATMENTSeptember 2022August 2025Abandon3510NoNo
17802961DEVICE FOR TREATING ALGAE IN WATERS OF INTEREST USING HIGH-VOLTAGE MICRO PULSE DISCHARGEAugust 2022December 2025Abandon4001NoNo
17894177METHOD FOR SIMULTANEOUSLY TREATING HIGH CONCENTRATION OF SULFIDE AND ORGANIC COMPOSITION CONTAINED IN WASTE LIQUIDAugust 2022October 2025Allow3810NoNo
17801998Method for Analyzing Deuterated Compounds, Method for Selecting Deuterated Compound for Manufacturing Device, and Method for Manufacturing Electronic DeviceAugust 2022December 2025Allow4010YesNo
17891782RECIRCULATING AQUACULTURE SYSTEM AND METHODAugust 2022November 2025Abandon3911NoNo
17891236PRODUCTION METHOD FOR FULL RESOURCE RECYCLING OF SULPHATE-PROCESS TITANIUM DIOXIDE PRODUCTION WASTEWATERAugust 2022December 2023Abandon1620NoNo
17803543Recovering heavy hydrocarbons from plastic materials and geoformationAugust 2022September 2024Allow2511YesNo
17815703Application of Titanium Carbide/Porous Carbon Composite in Electrochemical Treatment of Uranium-Containing WastewaterJuly 2022January 2023Allow610NoNo
17814989FILTRATION SEPARATOR FOR MAGNETIC PARTICLES AND FILTRATION SEPARATION METHOD FOR MAGNETIC PARTICLESJuly 2022January 2026Allow4121NoNo
17794702WATER REMEDIATION SYSTEMJuly 2022November 2025Allow4011YesNo
17788594METHODS FOR PREPARING MICROCAPILLARY CARBON MOLECULAR SIEVE MEMBRANESJune 2022July 2025Allow3720YesNo
17847195PROCESS FOR EXTRACTING BIOACTIVE COMPOUNDS FROM PLANT MATERIALSJune 2022November 2025Abandon4110NoNo
17846268POROUS MANGANESE-CONTAINING FENTON CATALYTIC MATERIAL AND PREPARATION METHOD AND USE THEREOFJune 2022June 2025Allow3511NoNo
17838361GALVANIC PROCESS FOR TREATING AQUEOUS COMPOSITIONSJune 2022August 2024Allow2630NoNo
17784632MOBILE PHASE MONITOR, LIQUID CHROMATOGRAPH, ANALYSIS SYSTEM, AND PROGRAMJune 2022January 2026Allow4320YesNo
17783808USING DAPHNIA FOR BIOREMEDIATIONJune 2022December 2025Allow4221NoNo
17783157MEMBRANE DISTILLER AND OPERATION METHOD THEREFOREJune 2022July 2025Allow3720YesNo
17781551METHOD OF VISIBLE-LIGHT PHOTOCATALYSIS COMBINED WITH CLO2 OXIDATION FOR HIGHLY EFFICIENT REMOVAL OF ORGANIC POLLUTANTS IN WASTEWATERJune 2022May 2024Abandon2410NoNo
17829212Emergency treatment equipment and method for algal blooms in reservoir tributaries and baysMay 2022March 2025Allow3311NoNo
17827821LAYERED MAGNESIUM MANGANESE COMPOSITE MATERIAL FOR COPPER ION ADSORPTION, PREPARATION METHOD THEREFOR AND APPLICATION THEREOFMay 2022August 2025Abandon3811NoNo
17777081APPARATUS FOR PURIFYING WATER AND CORRESPONDING PURIFICATION METHODMay 2022July 2025Abandon3811NoNo
17756016METHODS FOR ISOLATING UMBILICAL CORD BLOOD PLASMA PRODUCTS, TISSUE AND CELLULAR EXOSOMES, AND COMPOSITIONS AND METHODS OF USE THEREOFMay 2022December 2025Allow4311NoNo
17739153ENHANCED COAGULATION METHOD FOR REMOVING MICROPLASTICS IN WATERMay 2022January 2023Allow800NoNo
17733144Systems and Methods for Removing Micro-Particles from a Metalworking FluidApril 2022May 2024Allow2531YesNo
17731059Sparger Status Sensor SystemApril 2022March 2025Allow3410NoNo
17755310SEWAGE TREATMENT DEVICE CAPABLE OF CONTROLLING PRODUCT CRYSTALLIZATION GRANULARITY AND SEWAGE TREATMENT METHODApril 2022March 2023Allow1010NoNo
17728787Botanical Oil Extraction Method and SystemApril 2022May 2025Abandon3710NoNo
17770312DEVICE FOR BLOODApril 2022July 2025Abandon3901NoNo
17713521TITANIA-BASED TREATMENT SOLUTION AND METHOD OF PROMOTING PRECIPITATION AND REMOVAL OF HEAVY METALS FROM AN AQUEOUS SOURCEApril 2022May 2024Allow2530NoNo
17712531Continuous Flow Centrifugation ChambersApril 2022February 2025Allow3510YesNo
17698241CUTTING FLUID TANK FOR MACHINE TOOLMarch 2022November 2025Allow4420YesNo
17689502FUEL FILTERMarch 2022October 2024Allow3230YesNo
17652728USE OF MULTIPLE CHARGED IONIC COMPOUNDS DERIVED FROM POLYAMINES FOR WASTE WATER CLARIFICATIONFebruary 2022April 2023Allow1300NoNo
17673655STILLAGE SOLIDS CONCENTRATIONFebruary 2022October 2025Abandon4450NoNo
17668750PHOSPHORUS CONTROL FOR WASTE STREAMS FROM GLYPHOSATE MANUFACTURING PROCESSESFebruary 2022December 2023Allow2220NoNo
17630327DIALYSIS SYSTEM HAVING FIXED WATER PREPARATION UNITSJanuary 2022January 2025Allow3610NoNo
17580282REMOVAL OF AMMONICAL NITROGEN FROM LANDFILL LEACHATESJanuary 2022May 2022Allow310NoNo
17575057Removing Heavy Metals in a Ballasted ProcessJanuary 2022June 2023Allow1710NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner KEYWORTH, PETER.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
41
Examiner Affirmed
30
(73.2%)
Examiner Reversed
11
(26.8%)
Reversal Percentile
42.7%
Lower than average

What This Means

With a 26.8% reversal rate, the PTAB affirms the examiner's rejections in the vast majority of cases. This reversal rate is below the USPTO average, indicating that appeals face more challenges here than typical.

Strategic Value of Filing an Appeal

Total Appeal Filings
79
Allowed After Appeal Filing
22
(27.8%)
Not Allowed After Appeal Filing
57
(72.2%)
Filing Benefit Percentile
41.0%
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, 27.8% 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 KEYWORTH, PETER - Prosecution Strategy Guide

Executive Summary

Examiner KEYWORTH, PETER works in Art Unit 1777 and has examined 747 patent applications in our dataset. With an allowance rate of 55.6%, this examiner allows applications at a lower rate than most examiners at the USPTO. Applications typically reach final disposition in approximately 39 months.

Allowance Patterns

Examiner KEYWORTH, PETER's allowance rate of 55.6% places them in the 16% 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 KEYWORTH, PETER receive 2.45 office actions before reaching final disposition. This places the examiner in the 71% 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 KEYWORTH, PETER is 39 months. This places the examiner in the 26% percentile for prosecution speed. Prosecution timelines are slightly slower than average with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a +21.7% benefit to allowance rate for applications examined by KEYWORTH, PETER. This interview benefit is in the 66% percentile among all examiners. Recommendation: Interviews provide an above-average benefit with this examiner and are worth considering.

Request for Continued Examination (RCE) Effectiveness

When applicants file an RCE with this examiner, 19.7% of applications are subsequently allowed. This success rate is in the 20% 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 30.3% of cases where such amendments are filed. This entry rate is in the 44% 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, 13.3% result in withdrawal of the rejection or reopening of prosecution. This success rate is in the 25% 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, 19.5% 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, 53.1% are granted (fully or in part). This grant rate is in the 53% percentile among all examiners. Strategic Note: Petitions show above-average success regarding this examiner's actions. Petitionable matters include restriction requirements (MPEP § 1002.02(c)(2)) and various procedural issues.

Examiner Cooperation and Flexibility

Examiner's Amendments: This examiner makes examiner's amendments in 0.1% of allowed cases (in the 50% percentile). This examiner makes examiner's amendments more often than average to place applications in condition for allowance (MPEP § 1302.04).

Quayle Actions: This examiner issues Ex Parte Quayle actions in 1.9% of allowed cases (in the 67% percentile). This examiner issues Quayle actions more often than average when claims are allowable but formal matters remain (MPEP § 714.14).

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.

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.