USPTO Art Unit 3752 Prosecution Statistics

Art Unit Information

Art Unit: 3752
Group: 3750
Tech Center: 3700
Total Cases: 18,452
Last Active: September 2025

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19337454PORTABLE AIRLESS SPRAYERSeptember 2025February 2026Allow510NoNo
19311166CORNER-SPRINKLER APPARATUSAugust 2025December 2025Allow320NoNo
19285151OVERHEAD SHOWERJuly 2025January 2026Allow610NoNo
19283375TURBINE ENCLOSURE VENTILATION AIR DUCTING FOR AIR HANDLING TRANSPORTJuly 2025December 2025Allow510NoNo
19282888Detachable Spraying MachineJuly 2025October 2025Allow300NoNo
19264556Dual Stage Fire Sprinkler Head and Fire Suppression SystemJuly 2025October 2025Allow300NoNo
19228829EMISSIONS OF NON-VOLATILE PARTICULATE MATTER FROM GAS TURBINE ENGINES COMBUSTING SUSTAINABLE AVIATION FUEL AND FOSSIL-BASED HYDROCARBON FUELJune 2025February 2026Allow910NoNo
19227567WATER GUNJune 2025November 2025Allow510NoNo
19224740Automated Kitchen Hood Fire TrapMay 2025October 2025Allow510NoNo
19223339MANUAL SPRAY LIMITER FOR WATER TRUCK SPRAY NOZZLEMay 2025July 2025Allow210NoNo
19222649COMBUSTIBLE CONCEALED SPACEMay 2025November 2025Allow610YesNo
19218455AROMA DIFFUSERMay 2025July 2025Allow200NoNo
19213445SYSTEM AND METHOD FOR A FLUID DISPERSAL CARTRIDGEMay 2025February 2026Allow920YesNo
19192752FIRE SUPPRESSION PROCESSApril 2025January 2026Abandon910NoNo
19186782Airbrush with Quick Switchable Atomization ModeApril 2025June 2025Allow100NoNo
19097115Dry Fire Protection Sprinkler Assemblies and SystemsApril 2025October 2025Allow620NoNo
19091938IRRIGATION DEVICE FOR SANDY LAND CROP PLANTINGMarch 2025June 2025Allow200NoNo
19090795WATER GUNMarch 2025August 2025Allow510YesNo
19083918MOBILE SPRAYER BACKPACKMarch 2025September 2025Allow610NoNo
19080432SHOWERHEAD WITH MASSAGE FUNCTIONMarch 2025June 2025Allow310YesNo
19055095Fire Protection Systems and Methods Using Fire Protection Devices Installed in Pipe Fittings With an Internally Housed Seal MemberFebruary 2025April 2025Allow200YesNo
19052350APPARATUS AND METHOD FOR MITIGATING SANTA ANA WIND FIRE HAZARDSFebruary 2025November 2025Allow911NoNo
19049033CYCLONIC SEPARATOR FOR GAS TURBINE ENGINEFebruary 2025March 2026Allow1310NoNo
19048800HEAT REMOVAL SYSTEMS AND METHODS WITH AUTOMATED FIRE SUPPRESSION FOR DATA CENTERSFebruary 2025August 2025Allow620NoNo
19047035COMBUSTOR LINER PANELSFebruary 2025September 2025Allow710NoNo
19047165AIRCRAFT AIR SYSTEM WITH ELECTRIC BOOST COMPRESSORFebruary 2025October 2025Allow810NoNo
19042124GAS TURBINE ENGINE WITH THIRD STREAMJanuary 2025January 2026Allow1210NoNo
19043121GAS TURBINE ENGINEJanuary 2025November 2025Allow900NoNo
19035920CIRCULAR SPRINKLER IRRIGATION ALL-IN-ONE MACHINE CAPABLE OF SPRAYING WATER, FERTILIZER AND PESTICIDEJanuary 2025June 2025Allow510NoNo
19035228MODULAR MULTI-CONFIGURABLE SPRAYERJanuary 2025March 2025Allow200NoNo
19034484Dual Shower Head ApparatusJanuary 2025December 2025Abandon1110NoNo
19031657POWDER SPRAYERJanuary 2025July 2025Allow610NoNo
19027333Systems and Methods for Fire Protection of Horizontal Interstitial Spaces with Expanded Localized Heat Detection AreasJanuary 2025April 2025Allow300YesNo
19024222SPRAY GUN CONFIGURED FOR SWITCHING BETWEEN SPRAY MODES OF THE SPRAY GUNJanuary 2025June 2025Allow510NoNo
19018995ACCESSIBLE DEBRIS SEPARATOR FOR HIGH PRESSURE TURBINE OUTSIDE DIAMETER FED STATIC COMPONENTSJanuary 2025March 2026Allow1411NoNo
19016281GAS TURBINE ENGINE WITH THIRD STREAMJanuary 2025September 2025Allow800NoNo
19017029GAS TURBINE ENGINE HAVING A BYPASS PASSAGE, A FAN DUCT, AND A CORE DUCTJanuary 2025December 2025Allow1110NoNo
19010646ROTARY SPRAY RING AROMATHERAPY HUMIDIFIERJanuary 2025August 2025Allow711NoNo
19005083ULTRASONIC CONTROL APPARATUS AND METHOD FOR LIQUID JETDecember 2024April 2025Allow300NoNo
18989260Fire Sprinkler Remodeling and Hot Work GuardDecember 2024September 2025Abandon910NoNo
18991142GAS TURBINE ENGINE WITH THIRD STREAMDecember 2024November 2025Allow1010NoNo
18985409SYSTEM AND METHODS FOR AUTONOMOUS CONTINUOUS MONITORING, CHARACTERIZING, DETECTING, EVALUATING, SELECTING, AND RESPONDING TO BOTH IMPENDING AND EXISTING FIRE EVENTSDecember 2024June 2025Allow610YesNo
18983419HANDHELD WATER SPRAYERDecember 2024August 2025Allow820NoNo
18982445GAS TURBINE ENGINE WITH THIRD STREAMDecember 2024October 2025Allow1010NoNo
18977743FIRE-PREVENTION AND EXTINGUISHING MATERIAL FOR PLUGGING AIR LEAKAGE IN UNDERGROUND BARRIER PILLAR OF COAL MINE AND USE METHOD THEREOFDecember 2024March 2025Allow300YesNo
18969924HELICOPTER AERIAL WILDFIRE SUPPRESSION SYSTEMDecember 2024February 2025Allow210NoNo
18962582BOSS FOR A FUEL INJECTION ASSEMBLY HAVING COOLING CIRCUIT AND COMBUSTOR PROVIDED THEREWITHNovember 2024August 2025Allow910NoNo
18962602MULTISTAGE VARIABLE BURNING RATE SOLID ROCKET MOTOR AND FORMING METHODNovember 2024July 2025Allow820NoNo
18960450AIRCRAFT POWERPLANT GEARBOX WITH SELECTABLE POWER COUPLERNovember 2024September 2025Allow910NoNo
18960990ROCKET MOTOR INCLUDING AN EMBEDDED CHARGE ASSEMBLY (ECA) CONFIGURED TO SUPPORT A BURN RATE ENHANCEMENT (BRE) WIRENovember 2024July 2025Allow710YesNo
18960971CONTROLLING SUPPLY OF AIRCRAFT ENGINE WITH MULTIPLE FUELSNovember 2024September 2025Allow1010NoNo
18949997INTEGRATED SHOWER ARMNovember 2024January 2025Allow200NoNo
18949096COMBUSTOR HAVING A MAIN CHAMBER AND ONE OR MORE TRAPPED VORTEX CAVITIESNovember 2024August 2025Allow910YesNo
18946563APPARATUS FOR PRODUCING RECONFIGURABLE WALLS OF WATERNovember 2024November 2025Allow1211YesNo
18945305ICE SLURRY FIREFIGHTING SYSTEMNovember 2024January 2026Allow1410YesNo
18942928ICE REDUCTION MECHANISM FOR TURBOFAN ENGINENovember 2024July 2025Allow810YesNo
18924318FIRE EXTINGUISHING CONTROL METHOD, FIRE EXTINGUISHING SYSTEM, AND FIRE EXTINGUISHING PROTECTION SYSTEMOctober 2024January 2026Allow1521NoNo
18912267SCREEN-TYPE ELECTRIC VEHICLE FIRE SUPPRESSION DEVICEOctober 2024January 2025Allow410NoNo
18910948TURBINE ENGINE HAVING A VARIABLE ENGINE INTAKE SYSTEMOctober 2024June 2025Allow820YesNo
18910956TURBINE ENGINE HAVING A VARIABLE ENGINE INTAKE SYSTEMOctober 2024September 2025Allow1230YesNo
18897974Dry Fire Protection Sprinkler Assemblies and SystemsSeptember 2024March 2025Allow610YesNo
18892721GAS TURBINE PERFORMANCESeptember 2024September 2025Allow1121YesNo
18892666EMISSIONS OF NON-VOLATILE PARTICULATE MATTER FROM GAS TURBINE ENGINES COMBUSTING SUSTAINABLE AVIATION FUEL AND FOSSIL-BASED HYDROCARBON FUELSeptember 2024July 2025Allow1021YesNo
18847750NOZZLE DEVICE FOR PLANT PROTECTION UNMANNED AERIAL VEHICLE AND DROPLET DIAMETER CONTROL METHOD THEREOFSeptember 2024April 2025Allow710NoNo
18883246POWERPLANT FOR AN AIRCRAFTSeptember 2024October 2025Allow1301NoNo
18827645ROTARY CLOSED-CYCLE EXTERNALLY-HEATED ENGINESeptember 2024September 2025Allow1211YesNo
18812564CHILLED INTAKE AIR FOR INCREASED POWER GENERATIONAugust 2024August 2025Allow1110NoNo
18840302SPRINKLER SYSTEMAugust 2024January 2025Allow500NoNo
18809490GENERATION AND SPRAYING OF MICROSCOPIC WATER DROPLETSAugust 2024March 2025Allow701NoNo
18807522COGENERATION OF CHEMICAL PRODUCTSAugust 2024August 2025Allow1210NoNo
18804911MOTORIZED MATERIAL DISPENSING GARDENING APPARATUSAugust 2024September 2025Allow1321YesNo
18801078FIRE PROTECTION SYSTEM FOR SLOPED COMBUSTIBLE CONCEALED SPACESAugust 2024September 2024Allow100YesNo
18796846CONTROL SCHEMES FOR THERMAL MANAGEMENT OF POWER PRODUCTION SYSTEMS AND METHODSAugust 2024July 2025Allow1210NoNo
18834766FLUID DISPENSINGJuly 2024June 2025Allow1010NoNo
18788352AIR INTAKE WITH CHANGING WALL THICKNESS AND ASSOCIATED NACELLEJuly 2024December 2025Allow1630NoNo
18269297AIR-ASSISTED ULTRASONIC MAGNETIZATION ELECTROSTATIC NOZZLEJuly 2024May 2025Abandon2210NoNo
18777047ROTATING DETONATION COMBUSTOR SYSTEM AND METHOD OF OPERATING THE ROTATING DETONATION COMBUSTOR SYSTEMJuly 2024November 2025Abandon1620NoNo
18770902Gas Turbine Engine with Third StreamJuly 2024August 2025Allow1311NoNo
18768665TURBINE ENGINE COMBUSTOR WITH A DILUTION PASSAGEJuly 2024May 2025Allow1110NoNo
18765270LIQUID SPRAY NOZZLE AND LIQUID SPRAY DEVICEJuly 2024March 2026Allow2021NoNo
18765201Multifunctional Solar Landscape Fountain DeviceJuly 2024September 2024Allow300NoNo
18764661FIRE PROTECTION SYSTEMS FOR ROOFTOP SOLAR PANEL INSTALLATIONS, METHODS AND WATER SPRAY NOZZLES THEREFORJuly 2024December 2024Allow511NoNo
18762346AUTOMATIC VEHICLE FIRE BLANKET DEPLOYMENT SYSTEMJuly 2024September 2024Allow210NoNo
18759949FOUNTAIN LAMP WITH WATER ENTRY SENSING AND DISINFECTION DEVICEJune 2024October 2025Abandon1520NoNo
18725140METHOD FOR QUICKLY DETERMINING POSITION OF SIGNAL MOUTHPIECE OF SPRAYING EQUIPMENTJune 2024March 2026Allow2000NoNo
18757491DISINFECTION ROBOTJune 2024October 2024Allow410NoNo
18746182FIRE PROTECTION NOZZLE, FIRE PROTECTION SPRINKLER, FIRE PROTECTION SYSTEMS, AND METHODS OF MANUFACTURING A FIRE PROTECTION NOZZLE AND A FIRE PROTECTION SPRINKLERJune 2024February 2025Allow810NoNo
18747179LEAK RATE MONITORING FOR A FIRE SPRINKLER SYSTEMJune 2024June 2025Allow1201NoNo
18745648AIR COOLING SYSTEM FOR STATOR VANE STRUCTURE OUTER PLATFORMJune 2024July 2025Allow1310NoNo
18743463ARRANGEMENT OF EXTENDED COVERAGE DRY PENDENT STORAGE SPRINKLERS FOR A STORAGE FREEZERJune 2024March 2025Allow910YesNo
18740613GAS TURBINE ENGINE WITH THIRD STREAMJune 2024November 2025Allow1721YesNo
18719139STERILIZING AND INSECTICIDAL SPRAYERJune 2024July 2025Allow1411NoNo
18732731Aerial Boom with Through-Fan SprayJune 2024April 2025Allow1020YesNo
18680469GAS TURBINE ENGINE WITH THIRD STREAMMay 2024November 2025Allow1711NoNo
18679167SYSTEMS AND METHODS FOR COOLING HEATED AREAS AND FOR AIDING IN EXTINGUISHING FIRESMay 2024March 2026Allow2121YesNo
18714155WALL THROUGH CONNECTION COMPRISING A DUCT PORTION AND A METHOD FOR MOUNTING A WALL THROUGH CONNECTIONMay 2024June 2025Abandon1301NoNo
18676025FLUID SPRAYERMay 2024October 2024Allow501NoNo
18675270GAS TURBINE ENGINE WITH THIRD STREAMMay 2024September 2025Allow1611NoNo
18674441COMPRESSOR BLEED SLOTS WITH VARIABLE WALL STRUCTURESMay 2024July 2025Allow1411NoNo
18712415PRESSURIZATION OF A LUBRICATED TURBOMACHINE ENCLOSUREMay 2024August 2025Allow1520NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for art-unit 3752.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
401
Examiner Affirmed
199
(49.6%)
Examiner Reversed
202
(50.4%)
Reversal Percentile
94.2%
Higher than average

What This Means

With a 50.4% reversal rate, the PTAB has reversed the examiner's rejections more often than affirming them. This reversal rate is in the top 25% across the USPTO, indicating that appeals are more successful here than in most other areas.

Strategic Value of Filing an Appeal

Total Appeal Filings
1098
Allowed After Appeal Filing
383
(34.9%)
Not Allowed After Appeal Filing
715
(65.1%)
Filing Benefit Percentile
63.5%
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, 34.9% 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 3752 - Prosecution Statistics Summary

Executive Summary

Art Unit 3752 is part of Group 3750 in Technology Center 3700. This art unit has examined 18,452 patent applications in our dataset, with an overall allowance rate of 66.8%. Applications typically reach final disposition in approximately 32 months.

Comparative Analysis

Art Unit 3752's allowance rate of 66.8% places it in the 25% 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 3752 receive an average of 1.94 office actions before reaching final disposition (in the 54% percentile). The median prosecution time is 32 months (in the 45% 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.