USPTO Art Unit 3746 Prosecution Statistics

Art Unit Information

Art Unit: 3746
Group: 3740
Tech Center: 3700
Total Cases: 32,424
Last Active: March 2025

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19086484CAMPING FAN TELESCOPIC LAMPMarch 2025April 2025Allow100NoNo
19083159FANATIC PARTICIPATION DEVICEMarch 2025May 2025Allow200NoNo
19077200FLUID ENDMarch 2025April 2025Allow100YesNo
19062082FREQUENCY MODULATION AUXILIARY METHOD AND DEVICE FOR THERMAL POWER PLANT BASED ON DUAL ELECTRIC ENERGY CONVERTERFebruary 2025April 2025Allow200YesNo
19036483FLUID ROUTING PLUGJanuary 2025July 2025Allow500YesNo
19019315FULLY AUTOMATIC DEVICE FOR PUMPING COLD AIR INTO BLOCK-STONE SUBGRADEJanuary 2025March 2025Allow200NoNo
19014594MULTI-PARAMETER INTEGRATED TEST SYSTEM FOR DEEP GEOTHERMAL IN-SITU POWER GENERATIONJanuary 2025March 2025Allow200NoNo
19012852VACUUM ADSORBERJanuary 2025May 2025Allow410NoNo
18990417REVERSE FLOW GAS TURBINE ENGINE HAVING ELECTRIC MACHINEDecember 2024February 2025Allow200YesNo
17962323INTAKES AND GAS SEPARATORS FOR DOWNHOLE PUMPS, AND RELATED APPARATUSES AND METHODSDecember 2024September 2024Allow2421YesNo
18973714ELECTRIC COMPRESSORDecember 2024April 2025Allow400NoNo
18972026ENGINE AND METHOD OF OPERATING THE SAMEDecember 2024June 2025Allow610NoNo
18970558SYSTEMS AND METHODS FOR CONTROLLING A DOSING MODULEDecember 2024June 2025Allow710NoNo
18966717TURBINE ENGINE WITH A BLADE HAVING WOVEN CORE AND TOUGHENED REGIONDecember 2024January 2025Allow100NoNo
18967499PRESSURE-REGULATING HYDRODYNAMIC PUMP AND WAVE ENGINE WITH ENERGY PRODUCT GENERATION AND TRANSPORTDecember 2024May 2025Allow510YesNo
18963771EXHAUST PURIFYING APPARATUS FOR INTERNAL COMBUSTION ENGINENovember 2024March 2025Allow400NoNo
18962882CDA LIFTER WITH HYDRAULIC CONTROL FEED FROM OUTSIDE THE ENGINE BLOCKNovember 2024February 2025Allow300YesNo
18960854LANDFILL PUMP HAVING METERED CYCLINGNovember 2024July 2025Allow720YesNo
18957936ENERGY STORAGE METHOD AND DEVICE FOR BIOMASS CASCADE PYROLYSIS COUPLED WITH NEW ENERGY POWER GENERATIONNovember 2024March 2025Allow300NoNo
18953445BEARING BLOCK FOR A GEAR PUMP ASSEMBLYNovember 2024June 2025Allow600NoNo
18954219PAP SYSTEM BLOWERNovember 2024June 2025Allow600YesNo
18954122INTERNAL COMBUSTION ENGINE SYSTEMNovember 2024April 2025Allow400YesNo
18953739CENTRIFUGAL COMPRESSORNovember 2024May 2025Allow500NoNo
18951001VARIABLE VALVE DEVICENovember 2024April 2025Allow500YesNo
18951385Rocker Arm Assembly Comprising Swing BridgeNovember 2024April 2025Allow500YesNo
18951060ENGINE CONTROL SYSTEM PROVIDED WITH DUAL CONTINUOUSLY VARIABLE VALVE DURATION DEVICE AND METHOD OF GPF FORCIBLE REGENERATION USING THE SAMENovember 2024July 2025Allow702NoNo
18946862NOVEL BIDIRECTIONAL BLOWING FIREPLACE FANNovember 2024March 2025Allow410NoNo
18941191PRESSURE CONTROL IN AN EXHAUST AFTERTREATMENT SYSTEMNovember 2024April 2025Allow500YesNo
18864433MINIATURE VACUUM PUMP AND MINIATURE VACUUM DEVICENovember 2024February 2025Allow400NoNo
18936008Flexible Pump Assembly for Use in a Fan DriveNovember 2024May 2025Allow700NoNo
18934706Rocker with Switchable Rollers for Engine ValvetrainsNovember 2024April 2025Allow600YesNo
18934216HIGH-EFFICIENCY SINE ROTARY ENGINEOctober 2024May 2025Allow600NoNo
18862039IMPROVED UREA SENDER UNITOctober 2024April 2025Allow500NoNo
18861587BLOWER HOUSING, BLOWER WIRING STRUCTURE, AND BLOWEROctober 2024February 2025Allow400NoNo
18931156MARINE VESSEL AND EXHAUST MANIFOLD FOR MARINE VESSELOctober 2024April 2025Allow500YesNo
18929734EXHAUST PURIFICATION APPARATUSOctober 2024June 2025Allow810YesNo
18929918ACTUATION APPARATUS AND ELECTRONIC PRODUCTOctober 2024March 2025Allow400NoNo
18923544METHOD FOR CONTROLLING AT LEAST A PART OF AN EXHAUST AFTER TREATMENT SYSTEM OF A VEHICLEOctober 2024March 2025Allow500NoNo
18921278PUMPED HEAT ENERGY STORAGE SYSTEM WITH LOAD FOLLOWINGOctober 2024June 2025Allow710NoNo
18920128COMPRESSOR TRAIN FOR CHEMICAL PLANTOctober 2024June 2025Allow810NoNo
18914843EXHAUST SYSTEM AND COMPONENTS THEREOFOctober 2024June 2025Allow820YesNo
18913175Hybrid Bifurcating Wave Energy ConverterOctober 2024March 2025Allow610YesNo
18911668EXHAUST MIXER ASSEMBLYOctober 2024April 2025Allow600NoNo
18909436VALVE FOR AN OVERHEAD CAM ENGINE AND AN OVERHEAD CAM ENGINE ASSEMBLYOctober 2024April 2025Allow600YesNo
18909471EXHAUST AFTERTREATMENT ASSEMBLY WITH A MIXER HAVING A MIXING PLATE THAT IS CRESCENT SHAPEDOctober 2024April 2025Allow700YesNo
18906834SYSTEM AND METHOD FOR ACTUATING ENGINE VALVES INCLUDING A RECOMPRESSION RELIEF VALVE EVENTOctober 2024January 2025Allow400YesNo
18905240LIQUID COOLED PLUNGER SYSTEMOctober 2024March 2025Allow511YesNo
18852562COMPRESSORSeptember 2024March 2025Allow500NoNo
18901466ROTARY COMPRESSORSeptember 2024March 2025Allow600NoNo
18900581COMPRESSOR AND REFRIGERATION DEVICESeptember 2024February 2025Allow500YesNo
18896553Wave Power Generator DeviceSeptember 2024February 2025Allow410NoNo
18895487FUEL SUPPLY SYSTEM AND FUEL SUPPLY METHOD FOR AIRCRAFT GAS TURBINE ENGINESeptember 2024May 2025Allow800NoNo
18892656VEHICLESeptember 2024April 2025Allow600YesNo
18849446PRESSURE EXCHANGERS WITH FOULING AND PARTICLE HANDLING CAPABILITIESSeptember 2024April 2025Allow700YesNo
18891758VARIABLE VALVE DEVICESeptember 2024January 2025Allow400YesNo
18890896MIXER ARRANGEMENT FOR MIXING AN INJECTION MEDIUM INJECTABLE BY AN INJECTOR WITH THE EXHAUST GAS OF AN INTERNAL COMBUSTION ENGINESeptember 2024July 2025Allow910YesNo
18891857Apparatus and Methods Related to Coolant Diverter ValvesSeptember 2024March 2025Allow600NoNo
18889968COMPRESSION DEVICE HAVING INTEGRATED DISCHARGE CHAMBER(S) AND COMPRESSOR WITH COMPRESSION DEVICE HAVING INTEGRATED DISCHARGE CHAMBER(S)September 2024April 2025Allow710YesNo
18889178Solar energy to electrical energy or solar thermal power plant for the generation of electricitySeptember 2024April 2025Allow710YesNo
18883862System for Synchronizing SwitchingSeptember 2024January 2025Allow500YesNo
18883940SCROLL COMPRESSOR AND REFRIGERATION DEVICESeptember 2024April 2025Allow710YesNo
18830377Hybrid Drive Systems for Well Stimulation OperationsSeptember 2024May 2025Allow821YesNo
18829964FLUID END ASSEMBLYSeptember 2024March 2025Allow610YesNo
18828846HEATER CONTROL IN HEAVY-DUTY MOTOR VEHICLE ENGINESSeptember 2024March 2025Allow610NoNo
18826203HEAT EXCHANGER FOR STIRLING MACHINE, METHOD FOR MANUFACTURING HEAT EXCHANGER, AND STIRLING MACHINESeptember 2024June 2025Allow911YesNo
18826281METHOD FOR ASCERTAINING AN OPERATING STATE OF A BURNERSeptember 2024May 2025Allow910YesNo
18825096LOW COEFFICIENT OF EXPANSION ROTORS FOR BLOWERSSeptember 2024April 2025Allow810NoNo
18843632SCREW COMPRESSOR WITH IMPROVED SUCTION FLOWSeptember 2024June 2025Allow1010NoNo
18820571COLD START CATALYST BYPASS SYSTEMAugust 2024December 2024Allow400NoNo
18820905ENGINEAugust 2024May 2025Allow820YesNo
18818659INTEGRATED INTERNAL CONTINUOUS COMBUSTION ROTARY ENGINEAugust 2024April 2025Allow701NoNo
18816961HEAT INTEGRATIONAugust 2024June 2025Allow910NoNo
188166993-DIMENSIONAL PUMP ROTOR PROFILEAugust 2024February 2025Allow600NoNo
18817034SWITCHABLE ROCKER ARMAugust 2024March 2025Allow710NoNo
18815663SYSTEMS AND METHODS FOR PRODUCING CLEAN ENERGYAugust 2024February 2025Allow510NoNo
18814186COMPRESSOR AND AIR CONDITIONERAugust 2024March 2025Allow710NoNo
18840555ENERGY STORAGE SYSTEMAugust 2024April 2025Allow700NoNo
18840198DIESEL EXHAUST FLUID HEADER AND HEADER ADAPTERSAugust 2024May 2025Allow910NoNo
18839450EXTERNAL GEAR PUMPAugust 2024June 2025Allow1000NoNo
18806943ELECTRICAL HEATERS FOR EXHAUST AFTERTREATMENT SYSTEMS AND ASSEMBLIESAugust 2024October 2024Allow200YesNo
18838417CONTROL SYSTEM AND METHOD FOR HEAT SUPPLY APPARATUS OF NUCLEAR POWER PLANTAugust 2024April 2025Allow800YesNo
18803687VISCOUS FLOW BLOWERAugust 2024February 2025Allow600NoNo
18803329SYSTEMS AND METHODS FOR OPERATING PASSIVE NITROGEN OXIDE ADSORBERS IN EXHAUST AFTERTREATMENT SYSTEMSAugust 2024March 2025Allow710NoNo
18799108LOCAL STIFFENING FOR GAS TURBINE ENGINE CASINGAugust 2024June 2025Allow1110YesNo
18799641PropellerAugust 2024April 2025Allow900YesNo
18836795SCROLL COMPRESSORAugust 2024May 2025Allow910NoNo
18798222EXHAUST GAS AFTERTREATMENT SYSTEMAugust 2024March 2025Allow710YesNo
18793568METHODS AND SYSTEMS FOR VERIFYING OXYGEN SENSOR CONNECTIONSAugust 2024January 2025Allow500YesNo
18790901Gas Turbine with an Electrically Heated Thermal Energy Storage SystemJuly 2024April 2025Allow800YesNo
18790988APPARATUS FOR EXTRACTING POWER FROM WATER WAVESJuly 2024June 2025Allow1000YesNo
18834706HEAT EXCHANGER PROVIDED WITH AN AIR DIFFUSION SYSTEM AND CORRESPONDING TURBOMACHINEJuly 2024June 2025Allow1010NoNo
18790958STIRLING ENGINEJuly 2024April 2025Allow810YesNo
18788059CONTROL UNIT FOR ENGINE SYSTEMJuly 2024December 2024Allow500NoNo
18787622CONVERTIBLE SILENCERJuly 2024March 2025Allow800NoNo
18834139SCROLL COMPRESSORJuly 2024April 2025Allow900NoNo
18785372ROTATING AND TELESCOPING EXHAUST FOR AIR HANDLING TRANSPORTJuly 2024January 2025Allow600NoNo
18833307SYSTEM AND METHOD FOR VIBRATION CONTROLJuly 2024April 2025Allow921YesNo
18784078TORSIONAL VIBRATION DAMPER MECHANISM FOR GAS TURBINE ENGINEJuly 2024June 2025Allow1010NoNo
18784259Adaptive Learning System for Improving Sump Pump ControlJuly 2024April 2025Allow800YesNo
18783116FLUID SPRAYER WITH COVERED BATTERYJuly 2024July 2025Allow1100NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for art-unit 3746.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
305
Examiner Affirmed
193
(63.3%)
Examiner Reversed
112
(36.7%)
Reversal Percentile
69.8%
Higher than average

What This Means

With a 36.7% reversal rate, the PTAB reverses the examiner's rejections in a meaningful percentage of cases. This reversal rate is above the USPTO average, indicating that appeals have better success here than typical.

Strategic Value of Filing an Appeal

Total Appeal Filings
992
Allowed After Appeal Filing
344
(34.7%)
Not Allowed After Appeal Filing
648
(65.3%)
Filing Benefit Percentile
58.5%
Higher 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, 34.7% of applications that filed an appeal were subsequently allowed. This appeal filing benefit rate is above the USPTO average, suggesting that filing an appeal can be an effective strategy for prompting reconsideration.

Strategic Recommendations

✓ Appeals to PTAB show good success rates. If you have a strong case on the merits, consider fully prosecuting the appeal to a Board decision.

✓ Filing a Notice of Appeal is strategically valuable. The act of filing often prompts favorable reconsideration during the mandatory appeal conference.

Art Unit 3746 - Prosecution Statistics Summary

Executive Summary

Art Unit 3746 is part of Group 3740 in Technology Center 3700. This art unit has examined 32,424 patent applications in our dataset, with an overall allowance rate of 78.3%. Applications typically reach final disposition in approximately 27 months.

Comparative Analysis

Art Unit 3746's allowance rate of 78.3% places it in the 52% percentile among all USPTO art units. This art unit has an above-average allowance rate compared to other art units.

Prosecution Patterns

Applications in Art Unit 3746 receive an average of 1.58 office actions before reaching final disposition (in the 30% percentile). The median prosecution time is 27 months (in the 66% percentile).

Strategic Considerations

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

  • The art unit's allowance rate suggests a more favorable examination environment compared to the USPTO average.
  • With fewer office actions than average, plan for relatively streamlined prosecution.
  • The median prosecution time is shorter 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.