USPTO Art Unit 3752 Prosecution Statistics

Art Unit Information

Art Unit: 3752
Group: 3750
Tech Center: 3700
Total Cases: 17,949
Last Active: February 2025

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19055095Fire Protection Systems and Methods Using Fire Protection Devices Installed in Pipe Fittings With an Internally Housed Seal MemberFebruary 2025April 2025Allow200YesNo
19035920CIRCULAR SPRINKLER IRRIGATION ALL-IN-ONE MACHINE CAPABLE OF SPRAYING WATER, FERTILIZER AND PESTICIDEJanuary 2025June 2025Allow510NoNo
19027333Systems and Methods for Fire Protection of Horizontal Interstitial Spaces with Expanded Localized Heat Detection AreasJanuary 2025April 2025Allow300YesNo
19005083ULTRASONIC CONTROL APPARATUS AND METHOD FOR LIQUID JETDecember 2024April 2025Allow300NoNo
18985409SYSTEM AND METHODS FOR AUTONOMOUS CONTINUOUS MONITORING, CHARACTERIZING, DETECTING, EVALUATING, SELECTING, AND RESPONDING TO BOTH IMPENDING AND EXISTING FIRE EVENTSDecember 2024June 2025Allow610YesNo
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
18949997INTEGRATED SHOWER ARMNovember 2024January 2025Allow200NoNo
18912267SCREEN-TYPE ELECTRIC VEHICLE FIRE SUPPRESSION DEVICEOctober 2024January 2025Allow410NoNo
18897974Dry Fire Protection Sprinkler Assemblies and SystemsSeptember 2024March 2025Allow610YesNo
18847750NOZZLE DEVICE FOR PLANT PROTECTION UNMANNED AERIAL VEHICLE AND DROPLET DIAMETER CONTROL METHOD THEREOFSeptember 2024April 2025Allow710NoNo
18840302SPRINKLER SYSTEMAugust 2024January 2025Allow500NoNo
18809490GENERATION AND SPRAYING OF MICROSCOPIC WATER DROPLETSAugust 2024March 2025Allow701NoNo
18801078FIRE PROTECTION SYSTEM FOR SLOPED COMBUSTIBLE CONCEALED SPACESAugust 2024September 2024Allow100YesNo
18834766FLUID DISPENSINGJuly 2024June 2025Allow1010NoNo
18269297AIR-ASSISTED ULTRASONIC MAGNETIZATION ELECTROSTATIC NOZZLEJuly 2024May 2025Abandon2210NoNo
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
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
18743463ARRANGEMENT OF EXTENDED COVERAGE DRY PENDENT STORAGE SPRINKLERS FOR A STORAGE FREEZERJune 2024March 2025Allow910YesNo
18732731Aerial Boom with Through-Fan SprayJune 2024April 2025Allow1020YesNo
18714155WALL THROUGH CONNECTION COMPRISING A DUCT PORTION AND A METHOD FOR MOUNTING A WALL THROUGH CONNECTIONMay 2024June 2025Abandon1301NoNo
18676025FLUID SPRAYERMay 2024October 2024Allow501NoNo
18670529WATER CONTROL DEVICE FOR AGRICULTUREMay 2024August 2024Allow310NoNo
18670662INTELLIGENT AIR-ASSISTED SPRAYING DEVICE FOR ORCHARDS AND SPRAYING METHOD THEREOFMay 2024February 2025Allow820NoNo
18666289ENERGY STORAGE SYSTEMMay 2024February 2025Allow910YesNo
18656838CLEANING DEVICE FOR CLEANING A SEE-THROUGH AREA OF A MOTOR VEHICLEMay 2024April 2025Allow1120YesNo
18651098FLUID SPRAYERApril 2024October 2024Allow611YesNo
18648248Non Destructive Fire Sprinkler SystemApril 2024February 2025Allow1011YesNo
18704942OPERATION CONTROL METHOD SUITABLE FOR FIRE EXTINGUISHING SYSTEM OF EXTRA-HIGH VOLTAGE CONVERTER STATIONApril 2024November 2024Allow610YesNo
18642551REACTION FORCE NOZZLEApril 2024March 2025Allow1110NoNo
18642648Fluid And Target Compound Transmission Protective DeviceApril 2024February 2025Allow1010NoNo
18636460FAST RESPONSE GLASS BULB THERMAL TRIGGER ARRANGEMENTS AND METHODS THEREOF FOR LARGE ORIFICE SUPPRESSION FIRE PROTECTION SPRINKLERSApril 2024February 2025Allow1000NoNo
18637141Fire Containment ConnectorApril 2024December 2024Abandon810YesNo
18633878APPARATUS FOR NANOPARTICLE GENERATIONApril 2024May 2025Abandon1410NoNo
18633704FLEXIBLE DRY SPRINKLER HAVING A DIFFERENTIAL PRESSURE CONTROLLERApril 2024May 2025Allow1310NoNo
18632835Adaptive Guide Bushing for Laser Tube Cutting SystemApril 2024June 2025Abandon1410NoNo
18619840QUINT CONFIGURATION FIRE APPARATUSMarch 2024February 2025Allow3210NoNo
18618342FIRE AND SMOKE CONTAINMENT AND EXTINGUISHING APPARATUSMarch 2024April 2025Abandon1310NoNo
18614909PUSH BUTTON FOR DISTRIBUTION SYSTEM, WITH CROSSINGS OF FLUIDIC PATHSMarch 2024April 2025Allow1200NoNo
18614797ROBOTIC DISINFECTANT AND HUMIDITY SPRAYING SYSTEMMarch 2024September 2024Allow600NoNo
18613321VERTICAL FARMING SPRAYING SYSTEMMarch 2024August 2024Allow510NoNo
18611812SHOWERHEAD AND BUBBLE GENERATING UNITMarch 2024May 2025Allow1410NoNo
18598956MODULAR BOOM FOR SURFACE DEICING WITH BRINEMarch 2024November 2024Allow810YesNo
18593479MODIFIED DRIP IRRIGATION METHODMarch 2024February 2025Abandon1111NoNo
18687052DRY FIRE PROTECTION SPRINKLER ASSEMBLIES AND SYSTEMSFebruary 2024August 2024Allow620YesNo
18686989MIST GENERATING NOZZLEFebruary 2024May 2025Abandon1511NoNo
18582569Dual Function Applicator System and MachineFebruary 2024April 2025Abandon1310NoNo
18581621Closure For Nozzles With Heat Activation And Intelligent Controller For ClosuresFebruary 2024June 2025Allow1521NoNo
18581759VALVE SYSTEM AND METHOD FOR VENTING AND MEASURING A GAS CONTENT OF A FIRE SUPPRESSION SYSTEMFebruary 2024April 2025Allow1410NoNo
18423839WEEPING WALLFebruary 2024April 2025Allow1520YesNo
18683924ATOMIZATION NOZZLE, ATOMIZATION DEVICE, SPRAYING DEVICE, AND ATOMIZATION METHODFebruary 2024June 2024Allow400NoNo
18436607FUEL INJECTORFebruary 2024March 2025Allow1310YesNo
18437049Methods for An Electrostatic Atomizer of Moderately Conductive FluidsFebruary 2024September 2024Allow810NoNo
18432014WILDFIRE DEFENSE SPRAYING SYSTEM FOR SPRAYING ENVIRONMENTALLY-CLEAN WATER-BASED LIQUID FIRE INHIBITOR TO PROACTIVELY FORM THIN FIRE-INHIBITING ALKALI METAL SALT CRYSTALLINE COATINGS ON SPRAYED PROPERTY SURFACES PRIOR TO THE PRESENCE OF WILDFIREFebruary 2024October 2024Allow910NoNo
18432017WILDFIRE DEFENSE SPRAYING SYSTEM FOR SPRAYING ENVIRONMENTALLY-CLEAN WATER-BASED LIQUID FIRE INHIBITOR TO PROACTIVELY FORM THIN FIRE-INHIBITING POTASSIUM SALT CRYSTALLINE COATINGS ON SPRAYED PROPERTY SURFACES PRIOR TO THE PRESENCE OF WILDFIREFebruary 2024November 2024Allow1010NoNo
18432018REMOTELY-TRIGGERED WILDFIRE DEFENSE SYSTEM FOR AUTOMATICALLY SPRAYING ENVIRONMENTALY-CLEAN WATER-BASED LIQUID FIRE INHIBITOR TO PROACTIVELY FORM THIN FIRE-INHIBITING ALKALI METAL SALT CRYSTALLINE COATINGS ON SPRAYED COMBUSTIBLE SURFACES PRIOR TO WILDFIREFebruary 2024October 2024Allow910NoNo
18432020WILDFIRE DEFENSE SPRAYING PROCESS FOR AUTOMATICALLY SPRAYING ENVIRONMENTALLY-CLEAN WATER-BASED LIQUID FIRE INHIBITOR OVER COMBUSTIBLE PROPERTY SURFACES TO FORM THIN FIRE-INHIBITING POTASSIUM SALT CRYSTALLINE COATINGS THEREON BEFORE PRESENCE OF WILDFIREFebruary 2024October 2024Allow910NoNo
18422289Tri-Directional Break-Away Boom AssemblyJanuary 2024February 2025Allow1320NoNo
18419677THERAPEUTIC SUBSTANCE DISPENSING SHOWER HEAD SYSTEMJanuary 2024March 2025Allow1410NoNo
18420115AI-DRIVEN OFF-GRID FIRE PREVENTION SYSTEM AND METHODJanuary 2024March 2025Allow1410NoNo
18419068MIX CHAMBER FOR A PLURAL COMPONENT SPRAYERJanuary 2024November 2024Allow1010NoNo
18410359IRRIGATION APPARATUSJanuary 2024September 2024Allow810NoNo
18409314SYSTEM AND METHODS FOR AUTONOMOUS CONTINUOUS MONITORING, CHARACTERIZING, DETECTING, EVALUATING, SELECTING, AND RESPONDING TO BOTH IMPENDING AND EXISTING FIRE EVENTSJanuary 2024April 2025Allow1521YesNo
18408457FIRE SUPPRESSION TRAILER HAVING WHEEL WITH ARTICULING AXELJanuary 2024August 2024Allow720YesNo
18405748PAINT SPRAYER MACHINEJanuary 2024November 2024Allow1011YesNo
18404894WATER CONTROL DEVICE FOR AGRICULTUREJanuary 2024February 2024Allow200NoNo
18404031TEXTURIZING A WALL OR CEILING WITH NON-ACOUSTICAL JOINT COMPOUNDJanuary 2024December 2024Allow1110YesNo
18401453Fire Extinguishing Discharge Nozzle for Helicopter Engine CompartmentDecember 2023April 2025Allow1530NoNo
18398555ADJUSTABLE PRESSURE CLEANING MACHINEDecember 2023September 2024Allow910NoNo
18574866A PROTECTION AND INSTALLATION DEVICE FOR FIRE PROTECTION SPRINKLERSDecember 2023September 2024Allow810YesNo
18574303PRESSURE SELF-CONTROLLED IRRIGATION AND PESTICIDE APPLICATION SPRINKLER FOR MICRO-IRRIGATION SYSTEMDecember 2023September 2024Allow900NoNo
18397563SYSTEMS AND METHODS OF MONITORING TEMPERATURE IN A FIRE SUPPRESSION SYSTEMDecember 2023May 2025Allow1620YesNo
18544638FLUIDIC OSCILLATOR FOR A NOZZLE ASSEMBLY FOR ENHANCED COLD PERFORMANCEDecember 2023June 2025Allow1811YesNo
18543715Multi-Mode Fluid NozzlesDecember 2023November 2024Allow1111YesNo
18536655FIRE EXTINGUISHING CAPSULE AND CAPSULE-TYPE FIRE EXTINGUISHING DEVICE INCLUDING SAMEDecember 2023April 2025Allow1611NoNo
18534740VARIABLE-SIZE AND VARIABLE-AMOUNT TOPDRESSING DEVICEDecember 2023March 2024Allow300NoNo
18535562SYSTEMS AND METHODS FOR FIRE SUPPRESSION IN A CORRIDORDecember 2023April 2025Allow1720YesNo
18533005LIQUID NITROGEN DIRECT INJECTION AND FOAMING INTELLIGENT FILLING SYSTEM BASED ON MINE FIRE AREA CHARACTERISTICS AND APPLICATION METHODDecember 2023August 2024Allow820NoNo
18566326PROTECTED FIRE PROTECTION SPRINKLER AND TOOL ASSEMBLIESDecember 2023August 2024Allow910YesNo
18525493SYSTEMS AND METHODS TO CONTROL AERIAL DISTRIBUTION OF MATERIALSNovember 2023November 2024Allow1110YesNo
18525761DEVICE AND METHOD FOR EXTINGUISHING FIRE IN BATTERY PACK FOR SHIPNovember 2023August 2024Allow911YesNo
18522826ULLAGE PRESSURE-DRIVEN VALVE FOR FIRE SUPPRESSIONNovember 2023September 2024Allow1010NoNo
18521976FIRE EXTINGUISHING AGENT NOZZLE STRUCTURENovember 2023January 2025Allow1421NoNo
18521961FILTER MODULE USED FOR COOLING SYSTEM AND COOLING DEVICENovember 2023June 2024Allow610NoNo
18520483TEMPERATURE-SENSITIVE AUTOMATIC RAPID GAS GENERATION FIRE EXTINGUISHING DEVICENovember 2023January 2024Allow200YesNo
18519468AIR HEATING DEVICENovember 2023June 2025Abandon1820NoNo
18516411Deployable Fire Suppresive DeviceNovember 2023July 2024Allow821YesNo
18514577FIRE PROTECTION SYSTEMS AND METHODS USING FIRE PROTECTION DEVICES INSTALLED IN PIPE FITTINGS WITH AN INTERNALLY HOUSED SEAL MEMBERNovember 2023November 2024Allow1110NoNo
18512818OPERATIONAL ATTACHMENT FOR PORTABLE HOSE-EQUIPPED FIRE EXTINGUISHERS AND METHODS OF USENovember 2023March 2024Allow410YesNo
18512168FLEXIBLE DRY SPRINKLERNovember 2023September 2024Allow1010NoNo
18508372SPRINKLER GUARD FOR A FIRE PROTECTION SPRINKLER AND A METHOD OF MANUFACTURING A SPRINKLER GUARDNovember 2023August 2024Allow910NoNo
18388959Systems and Methods for Improving Fire Safety in Agricultural MachineryNovember 2023December 2024Allow1310NoNo
18388592Automated Structure and Curtilage Protection System and Associated MethodsNovember 2023April 2025Abandon1720YesNo
18504367EMITTER AND DRIP IRRIGATION TUBENovember 2023January 2025Abandon1410NoNo
18385968HAIR INFUSED FIRE SUPPRESENT METHOD AND APPARATUSNovember 2023January 2025Abandon1421NoNo
18385620SPRAY WANDOctober 2023January 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
360
Examiner Affirmed
182
(50.6%)
Examiner Reversed
178
(49.4%)
Reversal Percentile
93.4%
Higher than average

What This Means

With a 49.4% reversal rate, the PTAB reverses the examiner's rejections in a meaningful percentage of cases. 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
982
Allowed After Appeal Filing
341
(34.7%)
Not Allowed After Appeal Filing
641
(65.3%)
Filing Benefit Percentile
59.2%
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 3752 - Prosecution Statistics Summary

Executive Summary

Art Unit 3752 is part of Group 3750 in Technology Center 3700. This art unit has examined 17,949 patent applications in our dataset, with an overall allowance rate of 67.4%. Applications typically reach final disposition in approximately 31 months.

Comparative Analysis

Art Unit 3752's allowance rate of 67.4% places it in the 24% 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 1.90 office actions before reaching final disposition (in the 57% percentile). The median prosecution time is 31 months (in the 40% 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.