USPTO Art Unit 1771 Prosecution Statistics

Art Unit Information

Art Unit: 1771
Group: 1770
Tech Center: 1700
Total Cases: 15,904
Last Active: July 2025

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19273275SYSTEMS AND METHODS FOR COLLECTING AND TRANSPORTING BIOFUEL COMPONENTSJuly 2025November 2025Allow411YesNo
19270589TRANSESTERIFICATION CATALYST FOR BIODIESEL SYNTHESISJuly 2025December 2025Allow501NoNo
19254652METHOD FOR CORRECTING MOVABLE HYDROCARBON CONTENT OF HIGH GAS-OIL RATIO SHALE OIL BASED ON PHASE BEHAVIOR AND ROCK PYROLYSISJune 2025November 2025Allow410NoNo
19201491Process and apparatus for recovering rare earth elements from coal refuseMay 2025August 2025Allow310NoNo
19187971BIOMASS FUEL PROCESSING PELLET MILLS AND CONTROL METHODS THEREOFApril 2025August 2025Allow310NoNo
19185829WAX COMPOSITIONS FOR USE IN CANDLES AND METHODS OF PREPARING WAX COMPOSITIONSApril 2025August 2025Allow420NoNo
19184530Altering Sedimentation Mechanisms in Carbon-Based Nano-LubricantsApril 2025September 2025Allow510NoNo
19174439ADDITIVES FOR INCREASED FUEL EFFICIENCY FOR LIQUID FUELS USED IN COMBUSTION ENGINES AND METHODS FOR USING THE SAMEApril 2025January 2026Allow910NoNo
18871317GAS SEPARATION SYSTEM AND METHOD FOR PRODUCING METHANE-ENRICHED GASMarch 2025November 2025Allow1111NoNo
19107803GELLING AGENT FOR CALCIUM SULFONATE GREASESFebruary 2025March 2026Allow1200NoNo
19105163PRODUCTION OF UREA FOR DIESEL EXHAUST FLUIDFebruary 2025November 2025Allow801NoNo
19044245QUATERNARY AMMONIUM COMPOUNDSFebruary 2025December 2025Allow1101YesNo
19041577Fuel Additive that Cleans, Lubricates and Enhances CombustionJanuary 2025October 2025Abandon910NoNo
19039922WASTE-BASED ADDITIVE FOR SOLID FUEL AND RELATED METHODSJanuary 2025November 2025Allow920YesNo
19032705Conversion of Gums to Naphtha, Sustainable Jet Fuel, and Diesel ProductsJanuary 2025July 2025Allow601NoNo
19032711Sustainable Diesel Production from LigninsJanuary 2025April 2025Allow300NoNo
19032697Enhanced Treatment of Renewable Feedstocks with Integrated Off-Gas ProcessingJanuary 2025February 2026Allow1321NoNo
18997186LUBRICATING GREASE COMPOSITION CONTAINING AN IONIC FLUIDJanuary 2025December 2025Allow1111NoNo
19029832LUBRICATION OF TRANSFER PLATES USING AN OIL OR OIL IN WATER EMULSIONSJanuary 2025January 2026Allow1210NoNo
19022318LUBRICANT COMPOSITION FOR BRAKE SYSTEMJanuary 2025September 2025Allow800NoNo
19018391LUBRICATING COMPOSITIONSJanuary 2025February 2026Allow1310NoNo
18993419GREASE COMPOSITIONJanuary 2025March 2026Allow1410NoNo
18992434PURIFICATION OF WASTE PLASTICS BASED OIL VIA A POLYMERIZATIONJanuary 2025January 2026Allow1311NoNo
18992282PROCESS FOR THE RECYCLING AND CRACKING WASTE PLASTICS BASED OILJanuary 2025May 2025Allow401NoNo
18881124Process For The Purification Of Waste Plastics Based Oil With The Help Of Basic CompoundsJanuary 2025December 2025Allow1120NoNo
18879880LUBRICATING OIL ADDITIVE COMPOSITION AND LUBRICATING OIL COMPOSITIONDecember 2024March 2026Allow1510NoNo
18999474SYSTEMS AND METHODS FOR COLLECTING AND TRANSPORTING BIOFUEL COMPONENTSDecember 2024April 2025Allow410NoNo
18877084ASHLESS IONIC LIQUIDDecember 2024March 2026Allow1510NoNo
18977097THERMOLYSIS SYSTEM AND METHOD FOR OBTAINING RECOVERED CARBON BLACK AND FUEL FROM DISUSED TIRESDecember 2024March 2025Allow300NoNo
18969644LUBRICATING OIL VISCOSITY INDEX IMPROVER AND LUBRICATING OIL COMPOSITION CONTAINING THE SAMEDecember 2024March 2026Allow1510NoNo
18871668LUBRICATING OIL ADDITIVE COMPOSITION AND LUBRICATING OIL COMPOSITIONDecember 2024January 2026Allow1310NoNo
18966649Lubricant Compositions Containing Silicon For Reduced Pre-ignition In Hydrogen Fueled EnginesDecember 2024January 2026Allow1410NoNo
18860689QUALITY MANAGEMENT SYSTEM FOR MACHINING PROCESS, LUBRICATING LIQUID PROCESS, LUBRICATING LIQUID FOR MACHINE TOOL, AND ALKALINE ELECTROLYZED WATER GENERATION DEVICE FOR GENERATING LUBRICATING LIQUIDDecember 2024March 2026Allow1710NoNo
18961741COMPATIBILIZER PRECURSOR, METHODS, SYSTEMS, AND USES THEREOF, AND FORMULATIONS INCLUDING THE SAMENovember 2024November 2025Allow1210NoNo
18959196THIOPHOSPHATE ESTERS AS ANTIWEAR ADDITIVES FOR LUBRICANTSNovember 2024January 2026Allow1410NoNo
18867472Grease CompositionNovember 2024December 2025Allow1310YesNo
18866269GREASE COMPOSITION FOR CONSTANT-VELOCITY JOINT AND CONSTANT-VELOCITY JOINT FILLED THEREWITHNovember 2024March 2026Allow1610NoNo
18864952USE OF SPECIFIC BASE OIL FOR REDUCING PARTICULATE EMISSIONSNovember 2024March 2026Abandon1610NoNo
18864422BASE OIL AND LUBRICATING FLUID COMPOSITION CONTAINING SAID BASE OILNovember 2024December 2025Allow1310NoNo
18863788NOVEL PROCESS FOR PRODUCING BIODIESEL WITH REDUCED MONOACYLGLYCEROL CONTENTNovember 2024March 2026Allow1610NoNo
18862681METHOD AND SYSTEM FOR PROCESSING LIGNOCELLULOSE BIOMASS MATERIALNovember 2024March 2026Allow1610NoNo
18935023EMISSION REDUCTION SYSTEMNovember 2024November 2025Allow1211NoNo
18861965LUBRICATING OIL COMPOSITION, LUBRICATION METHOD, AND TRANSMISSIONOctober 2024January 2026Allow1410NoNo
18861249FLUORINE-CONTAINING ETHER COMPOUND, LUBRICANT FOR MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING MEDIUMOctober 2024August 2025Allow900NoNo
18861332FLUORINE-CONTAINING ETHER COMPOUND, METHOD FOR PRODUCING SAME, LUBRICANT FOR MAGNETIC RECORDING MEDIA, AND MAGNETIC RECORDING MEDIAOctober 2024February 2026Allow1510NoNo
18860585AQUEOUS LUBRICANT FOR METALWORKINGOctober 2024February 2026Allow1620NoNo
18859313REFRIGERATOR OIL, AND WORKING FLUID COMPOSITIONOctober 2024December 2025Allow1310YesNo
18919759SYSTEMS AND METHODS FOR PRODUCING AVIATION FUELOctober 2024May 2025Allow710NoNo
18857577IMPROVED FIRE STARTER AND PREPARATION METHODS THEREFOROctober 2024March 2026Abandon1701NoNo
18918702FIRE STARTER AND PREPARATION METHODS THEREFOROctober 2024March 2026Abandon1711NoNo
18857414AQUEOUS LUBRICANT COMPOSITION COMPRISING ASCORBIC ACID ESTEROctober 2024February 2026Abandon1610NoNo
18857417AQUEOUS LUBRICANT COMPOSITION COMPRISING A GALLIC ACID ESTEROctober 2024March 2026Abandon1710NoNo
18909317ENVIRONMENTALLY ACCEPTABLE LUBRICANT COMPOSITIONSOctober 2024October 2025Allow1210NoNo
18854572Method to Minimize Conductive DepositsOctober 2024September 2025Allow1110NoNo
18854199LUBRICATING OIL COMPOSITIONOctober 2024June 2025Allow800NoNo
18853689BIODEGRADABLE LUBRICATING GREASESOctober 2024March 2026Allow1710NoNo
18904929ALCOHOL BASED UNLEADED AUTOMOTIVE RACING FUELOctober 2024February 2026Allow1621NoNo
18904342BALL SCREW GREASE COMPOSITION FOR RACK-ASSISTED ELECTRIC POWER STEERINGOctober 2024January 2026Allow1620YesNo
18901076BRINE-TOLERANT LUBRICANTS AND METHODS FOR USING THE SAMESeptember 2024December 2025Abandon1410NoNo
18899803LOW-ASH LUBRICATING COMPOSITIONSSeptember 2024September 2025Allow1210NoNo
18900256CONVERTING A RENEWABLE FUEL INTERMEDIATE COMPOSITION TO FINISHED TRANSPORTATION FUELSeptember 2024March 2025Allow610NoNo
18851313COMPOSITION, LUBRICATING OIL COMPOSITION AND GREASE COMPOSITIONSeptember 2024January 2026Abandon1510NoNo
18894418LIQUID AND SEMISOLID LUBRICANT COMPOSITIONS, METHODS OF MAKING, AND USES THEREOFSeptember 2024January 2026Allow1610NoNo
18850353ADDITIVES WITH HIGH SULFURIZATION FOR LUBRICATING OIL COMPOSITIONSSeptember 2024September 2025Allow1210NoNo
18849760LUBRICATING OIL COMPOSITION, FLASH POINT IMPROVER, AND FLASH POINT IMPROVING METHODSeptember 2024February 2026Abandon1610NoNo
18892228FOUNDRY COKE PRODUCTS, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODSSeptember 2024March 2025Allow610YesNo
18849213LUBRICATING OIL COMPOSITION FOR TWO-WHEELED VEHICLESeptember 2024January 2026Allow1610NoNo
18887902NON-FOSSIL, BIODIESEL FUEL BLENDS AND METHODS OF PRODUCTION THEREOFSeptember 2024April 2025Allow710YesNo
18884107CLEAN COAL FOR COMBUSTION AND PREPARATION METHOD THEREOFSeptember 2024December 2025Allow1510NoNo
18846995GREASE COMPOSITION AND RACK-AND-PINION-TYPE STEERING DEVICE FILLED WITH THE SAME GREASE COMPOSITIONSeptember 2024September 2025Allow1210YesNo
18882334LUBRICATING OIL COMPOSITIONS AND USE THEREOF FOR IMPROVING JOURNAL BEARING DURABILITY IN INTERNAL COMBUSTION ENGINESSeptember 2024March 2026Allow1820YesNo
18845731METHOD OF PRODUCING LIQUID FUEL BLEND USING A CARBON REDUCING PROCESSSeptember 2024January 2026Allow1610NoNo
18826880LUBRICATING OIL COMPOSITIONS AND USE THEREOF FOR IMPROVING JOURNAL BEARING WEAR IN INTERNAL COMBUSTION ENGINESSeptember 2024March 2026Allow1820YesNo
18825555ORGANIC PHOSPHORUS COMPOUND, PREPARATION METHOD THEREFOR, AND USES THEREOFSeptember 2024January 2026Allow1610NoNo
18843833METHOD AND DEVICE SYSTEM FOR PRODUCING FEED STOCK OF ETHYLENE STEAM CRACKER AND NANO-CARBON MATERIAL FROM WASTE PLASTICSSeptember 2024May 2025Allow810NoNo
18843882SLIDING MATERIAL AND GAS COMPRESSORSeptember 2024October 2025Allow1310YesNo
18822690ANTIWEAR SYSTEMS FOR IMPROVED WEAR IN MEDIUM AND/OR HEAVY DUTY DIESEL ENGINESSeptember 2024August 2025Allow1110YesNo
18822336PHENOLAMINE ADDITIVE, PREPARATION METHOD AND USE THEREOFSeptember 2024January 2026Abandon1710NoNo
18820886ESTER BLENDS FOR ELECTRIC DRIVE AND COOLING APPLICATIONAugust 2024August 2025Allow1100NoNo
18820022Alkylated Napthalene Blendstocks and Processes for Producing the SameAugust 2024March 2026Allow1911NoNo
18818133PROCESS AND APPARATUS FOR HYDROPROCESSING A PARAFFINIC FEEDSTOCKAugust 2024July 2025Allow1120NoNo
18818218INGOT WAFERING SYSTEMS AND METHODS FOR SLICING A SILICON INGOTAugust 2024September 2025Allow1310YesNo
18817145FUEL ADDITIVE COMPOSITIONAugust 2024January 2026Allow1710YesNo
18841790LUBRICANT ADDITIVE, LUBRICANT COMPOSITION, AND WORKING FLUID COMPOSITIONAugust 2024January 2026Allow1720NoNo
18815811AIR PURIFICATION CANDLEAugust 2024August 2025Allow1230YesNo
18841218COKE REDUCING ADDITIVE COMPOSITION AND METHOD OF USE THEREOFAugust 2024March 2025Allow710NoNo
18813751USE OF MOLYBDENUM COMPOUNDS IN DRIVELINE LUBRICANTS FOR REDUCED FRICTION AND COPPER CORROSIONAugust 2024November 2025Allow1510NoNo
18809733ADDITIVE COMPOSITIONS FOR FUEL OILSAugust 2024September 2025Allow1310NoNo
18839869GREASEAugust 2024October 2025Abandon1410NoNo
18839545LUBRICATING OIL COMPOSITIONAugust 2024June 2025Allow1010NoNo
18839655PROCESS FOR PRODUCING SOLID BIOMASS FUELAugust 2024March 2026Allow1810NoNo
18838121RENEWABLE MARINE FUEL AND METHOD OF PRODUCTIONAugust 2024September 2025Allow1310NoNo
18838166ESTER BASED FUNCTIONAL FLUIDAugust 2024June 2025Allow1110NoNo
18799808DIRECT REDUCED IRON SYSTEM AND METHODAugust 2024March 2026Allow1911NoNo
18836902LUBRICANT COMPOSITIONAugust 2024November 2025Allow1520NoNo
18797375COMPOSITIONS, METHODS OF USE AND MANUFACTURE THEREOF, AND SYSTEM FOR GENERATING HIGH-LUBRICITY SUBSTANCES FOR LUBRICATION OF A MECHANICAL DEVICEAugust 2024January 2026Allow1701NoNo
18795790ANTI-CORROSIVE LUBRICANT COMPOSITION FOR ELECTRICAL APPARATUSAugust 2024June 2025Allow1000NoNo
18836325ALUMINUM BRONZE ALLOY AND SLIDING MEMBER USING SAID ALLOYAugust 2024January 2026Allow1720YesNo
18793631HIGH-QUALITY COKE PRODUCTSAugust 2024November 2024Allow410NoNo
18788356METHOD FOR PRETREATING WASTE FAT, OIL AND GREASE AND CO-PRODUCING FIRST-GENERATION BIODIESELJuly 2024March 2026Allow2010NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for art-unit 1771.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
484
Examiner Affirmed
366
(75.6%)
Examiner Reversed
118
(24.4%)
Reversal Percentile
13.6%
Lower than average

What This Means

With a 24.4% 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
1701
Allowed After Appeal Filing
458
(26.9%)
Not Allowed After Appeal Filing
1243
(73.1%)
Filing Benefit Percentile
21.8%
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, 26.9% 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.

Art Unit 1771 - Prosecution Statistics Summary

Executive Summary

Art Unit 1771 is part of Group 1770 in Technology Center 1700. This art unit has examined 15,904 patent applications in our dataset, with an overall allowance rate of 60.6%. Applications typically reach final disposition in approximately 31 months.

Comparative Analysis

Art Unit 1771's allowance rate of 60.6% places it in the 16% percentile among all USPTO art units. This art unit has a significantly lower allowance rate than most art units at the USPTO.

Prosecution Patterns

Applications in Art Unit 1771 receive an average of 2.19 office actions before reaching final disposition (in the 72% percentile). The median prosecution time is 31 months (in the 48% percentile).

Strategic Considerations

When prosecuting applications in this art unit, consider the following:

  • The art unit's allowance rate suggests a more challenging examination environment compared to the USPTO average.
  • With more office actions than average, plan for relatively streamlined prosecution.
  • The median prosecution time is longer than average and should be factored into your continuation and client communication strategies.
  • Review individual examiner statistics within this art unit to identify examiners with particularly favorable or challenging prosecution patterns.

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.