USPTO Art Unit 1774 Prosecution Statistics

Art Unit Information

Art Unit: 1774
Group: 1770
Tech Center: 1700
Total Cases: 17,764
Last Active: September 2025

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19342182DRINK MAKER WITH DETACHABLY CONNECTABLE MIXING VESSELSeptember 2025March 2026Allow520YesNo
19284578ROW-INDEPENDENT OLIGONUCLEOTIDE SYNTHESISJuly 2025January 2026Allow510NoNo
19279203DIRECT ELECTRICAL HEATING OF PROCESS HEATER TUBES USING GALVANIC ISOLATION TECHNIQUESJuly 2025December 2025Allow510NoNo
19254687PRODUCTION PROCESS, EQUIPMENT AND SYSTEM FOR FACTORY-MIXED WARM AND HOT RECYCLED ASPHALT MIXTUREJune 2025September 2025Allow310NoNo
19242313THREE-DIMENSIONALLY PRINTED LATTICE STRUCTURE FOR THERMAL ENERGY GENERATIONJune 2025January 2026Allow720NoNo
19238347MIXERJune 2025December 2025Allow710YesNo
19220452Lifting Mechanism for Food ProcessorMay 2025August 2025Allow300NoNo
19220017SYSTEMS FOR PEAK SHAVING WITH COUPLED SURPLUS ENERGY UTILIZATION AND SOLID WASTE TREATMENTMay 2025August 2025Allow300NoNo
19206032ANGLE-VARIABLE STIRRING AND SEPARATING DEVICE FOR HIGH-VALUE COMPONENTS OF WASTE PCB AND CONTROL METHOD THEREOFMay 2025November 2025Allow610NoNo
19196083Continuous Clean CentrifugeMay 2025July 2025Allow300NoNo
19192589THERMOSTATIC BOXES FOR PREPARING HYDROGELS BY FREEZE-THAW PROCESSES AND PREPARATION METHODS THEREOFApril 2025July 2025Allow200NoNo
19188095MULTI POWDER MIXING SYSTEMApril 2025June 2025Allow200YesNo
19177018DIRECT ELECTRICAL HEATING OF PROCESS HEATER TUBES USING GALVANIC ISOLATION TECHNIQUESApril 2025May 2025Allow100NoNo
19174640HEATER FOR EXHAUST POLLUTION MITIGATIONApril 2025June 2025Allow211YesNo
19172414EXHAUST GAS TREATMENT AND MONITORING SYSTEM FOR A MEDICAL WASTE DISPOSAL EQUIPMENTApril 2025December 2025Allow920NoNo
19096377METHOD AND DEVICE FOR TREATMENT OF LIQUID HYDROCARBONSMarch 2025October 2025Allow710NoNo
19088653FLOW REACTORS AND RELATED SYSTEMS AND METHODSMarch 2025September 2025Allow610YesNo
19109456IMPROVED NANOCARRIER MANUFACTURINGMarch 2025September 2025Allow600NoNo
19069791RE-CLOSABLE FLEXIBLE CONTAINER FOR MIXING INGREDIENTS, KIT FOR BAKING MIX AND METHOD OF OPERATION THEREOFMarch 2025October 2025Allow710NoNo
19069597DEVICE FOR AUTOCLAVING AND CENTRIFUGING A SAMPLEMarch 2025May 2025Allow200NoNo
19059008GRADUAL OXIDATION APPARATUSFebruary 2025July 2025Allow510NoNo
19055486SAWTOOTH WAVE IMPELLER TUMBLERFebruary 2025June 2025Allow410NoNo
19047950SYSTEMS AND METHODS FOR SEQUENTIAL ENERGIZATION OF HEATING ELEMENTS IN AN ELECTRIC CATALYST UNIT FOR AMMONIA DISSOCIATIONFebruary 2025May 2025Allow300NoNo
19047961SYSTEMS AND METHODS FOR PRODUCING HYDROGEN WITH INTEGRATED CAPTURE OF CARBON DIOXIDEFebruary 2025May 2025Allow401NoNo
19046088CENTRIFUGAL IDENTIFICATION DISK AND CENTRIFUGEFebruary 2025December 2025Allow1020YesNo
19038495REACTOR SYSTEMS FOR ENDOTHERMIC REACTIONSJanuary 2025October 2025Allow911NoNo
19033807DYNAMIC CATALYTIC CONVERSION REACTOR AND SYSTEMS AND METHODS USING THE SAMEJanuary 2025July 2025Allow610NoNo
19033424CARBON DIOXIDE REMOVAL AND ASSOCIATED SYSTEMS, DEVICES, AND METHODSJanuary 2025July 2025Allow610NoNo
19032012GREEN ENERGY TRANSPORTATION SYSTEM AND TRANSPORTATION METHOD USING GREEN HYDROGENJanuary 2025August 2025Allow701NoNo
18995853FLOW MEMBER AND REACTION VESSELJanuary 2025September 2025Allow810NoNo
19023785LIQUID DELIVERING SYSTEM FOR WAFER CLEANING EQUIPMENTJanuary 2025April 2025Allow300YesNo
19023735MANIFOLD FOR A HYDRAULIC VIBRATION GENERATING DEVICE OR HYDRAULIC MOTORJanuary 2025January 2026Allow1221NoNo
19023706INGREDIENT BLENDING SYSTEM AND METHODJanuary 2025April 2025Allow201NoNo
19016522Feature for Preventing Material Buildup in a Mixing Vessel of a Drink MakerJanuary 2025July 2025Allow710NoNo
19013785PROACTIVE AIR/SURFACE DECONTAMINATION SYSTEM AND DEVICESJanuary 2025January 2026Abandon1210NoNo
19007769CARBON-BASED MICROREACTOR, AND PREPARATION METHOD AND APPLICATION THEREOFJanuary 2025April 2025Allow410NoNo
19004751DILUTION NOZZLE ASSEMBLY FOR HAZARDOUS GASESDecember 2024June 2025Allow640NoNo
19006093SYSTEMS AND METHODS FOR MAKING HYDROCARBON COMPOSITIONS DERIVED FROM PYROLYSIS OF POST-CONSUMER AND/OR POST-INDUSTRIAL PLASTICSDecember 2024October 2025Allow920NoNo
18981963ROTATING VACUUM TANK AND METHODDecember 2024April 2025Allow410NoNo
18979708METHODS AND COMPOSITIONS FOR TREATMENT OF CONCRETE WASH WATERDecember 2024October 2025Allow1021YesNo
18870454LIMESTONE SLURRY AND LIME MILK PREPARING DEVICE FOR HYDROMETALLURGY OF LATERITE NICKEL ORENovember 2024March 2025Allow400NoNo
18870456HIGH-PRESSURE REACTOR ACID ADDING SYSTEM FOR LATERITE NICKEL ORE HYDROMETALLURGYNovember 2024May 2025Allow500NoNo
18958430PLANAR VESSEL MIXING USING A BRUSHLESS DRIVE SURROUNDING THE REACTION SPACENovember 2024May 2025Allow610NoNo
17631377IMPELLER ASSEMBLY AND SOLID-LIQUID MIXING DEVICE USING SAMENovember 2024July 2025Allow4210NoNo
18951841ADAPTER FOR USE IN A PLANETARY MIXERNovember 2024April 2025Allow501NoNo
18947646AMMONIA SYNTHESIS SYSTEM AND AMMONIA PRODUCTION METHODNovember 2024September 2025Allow1000NoNo
18947458ATR-BASED HYDROGEN PROCESS AND PLANTNovember 2024August 2025Allow910NoNo
18937576High Speed Blending Method with Liquefaction FunctionNovember 2024December 2024Allow100NoNo
18936375EFFICIENT AND ENERGY-SAVING BUILDING SLURRY STIRRING DEVICENovember 2024January 2025Allow200NoNo
18933918Chemical Mixing Spool and MethodOctober 2024January 2025Allow210NoNo
18934171Mixing Device with Rotatable ContainerOctober 2024September 2025Allow1110NoNo
18860885BIS(FLUOROSULFONYL)IMIDE IMPURITY REMOVAL AND PURIFICATION SYSTEM AND BIS(FLUOROSULFONYL)IMIDE IMPURITY REMOVAL AND PURIFICATION METHODOctober 2024August 2025Allow911NoNo
18910503APPARATUSES AND METHODS FOR PRODUCING NANOPARTICLES FROM MATERIAL IN WORKING LIQUIDOctober 2024July 2025Allow1011NoNo
18906498DILUTION NOZZLE ASSEMBLY FOR HAZARDOUS GASESOctober 2024January 2025Allow430NoNo
18905379MAGNETIC STIRRING APPARATUS FOR PRECISE FLUID MANAGEMENT AND FLUID DYNAMICS CONTROLOctober 2024January 2026Allow1530YesNo
18904840USE OF SULFUR AS ALTERNATIVE CARBON-FREE FUEL IN AMMONIA PRIMARY REFORMER COMBUSTION ZONE, BY COUPLING AMMONIA AND SULFURIC ACID PRODUCTION FACILITIESOctober 2024July 2025Allow1020NoNo
18901959APPARATUS AND METHOD FOR TREATING SHOESSeptember 2024October 2025Allow1210NoNo
18897048Thickening device and method for uniform solidification of composite lost circulation material made up of liquid and granular lost circulation materialsSeptember 2024December 2024Allow300NoNo
18896492Chemical Mixing SpoolSeptember 2024June 2025Abandon910NoNo
18850232FLUIDIZED BED GRANULATIONSeptember 2024February 2025Allow400NoNo
18848982LED LAMP MODULE AND DEVICE FOR CARRYING OUT A PHOTOCHEMICAL REACTIONSeptember 2024March 2025Allow600NoNo
18889467NANOPARTICLE ULTRASONIC DISPERSION DEVICE AND NANOPARTICLE ULTRASONIC DISPERSION METHOD THEREOFSeptember 2024November 2024Allow200NoNo
18827839CONTINUOUS PRODUCTION DEVICE FOR ORGANOPHOSPHORUS NITRILE-CATALYZED HIGH-MOLECULAR-WEIGHT POLYSILOXANESeptember 2024February 2025Allow600NoNo
18844399SYSTEM FOR CO2 STORAGE AND UTILIZATION OF CONCRETE MIXING PLANT AND METHOD THEREOFSeptember 2024March 2025Allow700NoNo
18827074SYSTEM AND METHOD FOR A THREE-DIMENSIONALLY PRINTED LATTICE STRUCTURE FOR HEATING GAS IN A NON-LINEAR PATHSeptember 2024June 2025Allow920NoNo
18822667DETACHABLE ELECTRIC STIRRING CUPSeptember 2024December 2025Abandon1520NoNo
18821240Fugitive Gas Remediation SystemAugust 2024March 2026Allow1810NoNo
18820231DEVICES AND METHODS FOR CONTROLLING PRESSURE OF HIGH-TEMPERATURE AND HIGH-PRESSURE REACTORSAugust 2024April 2025Allow710NoNo
18816401Drink Maker with Detachably Connectable Mixing VesselAugust 2024April 2025Allow711NoNo
18816956High-Efficiency System for Converting Limestone to Slaked LimeAugust 2024May 2025Abandon910YesNo
18816213RECOVERY BOILER STARTUP BURNER ASSEMBLYAugust 2024February 2026Allow1801NoNo
18841201PUMP DEVICE WITH A CENTRIFUGAL PUMP AND A MIXING UNITAugust 2024February 2025Allow600NoNo
18812245SUPERVISORY CONTROL AND PATHOGEN-DESTROYING ELECTROSTATIC PRECIPITATOR SYSTEMAugust 2024July 2025Allow1120NoNo
18797636BATCHING METHOD AND SYSTEMAugust 2024March 2025Allow721NoNo
18835531Discharge device for a reaction vessel unit, centrifuge and method for cleaning a reaction vessel unitAugust 2024October 2025Allow1420YesNo
18788769OSCILLATING BIOREACTOR SYSTEMJuly 2024February 2026Allow1910NoNo
18781825REACTOR FOR COATING PARTICLES IN STATIONARY CHAMBER WITH ROTATING PADDLES AND GAS INJECTIONJuly 2024March 2026Allow2010NoNo
18773293Blending System And Blending Method With Safely And Fast StirJuly 2024October 2024Allow301NoNo
18771708Food Processor With Cleaning Accessory amd Methods of Using SameJuly 2024May 2025Allow1010NoNo
18767814CORONAVIRUS (COVID-19) AIR SANITIZATION/ISOLATION SYSTEM WITH ANTI-VIRUS CURTAIN WALLSJuly 2024November 2025Allow1620YesNo
18766604SYSTEMS AND METHODS FOR THE ON-BOARD PRODUCTION OF HYDROGEN FROM AMMONIA FOR FUELING AN INTERNAL COMBUSTION ENGINE THAT REQUIRES NO FOSSIL FUEL PROMOTORJuly 2024September 2025Allow1430YesNo
18764732OVERHEAD ANIMAL FEED LOADING, TRANSPORTING AND MIXING SYSTEMJuly 2024January 2026Allow1810NoNo
18763962Gas Irradiation ApparatusJuly 2024October 2024Allow410NoNo
18762146CHEMICAL PRECURSOR BUBBLER ASSEMBLY WITH ROUTING STRUCTUREJuly 2024July 2025Abandon1310NoNo
18762336SYSTEMS AND METHODS FOR PRODUCTION AND SEPARATION OF HYDROGEN AND CARBON DIOXIDEJuly 2024November 2024Allow501NoNo
18758642ELECTRICAL COUPLER FOR RESISTIVELY HEATED REACTOR SYSTEMSJune 2024February 2025Allow810YesNo
18755680CHEMICAL LIQUID PREPARATION DEVICE, AND SUBSTRATE PROCESSING DEVICEJune 2024May 2025Allow1000NoNo
18756536ADJUSTMENT ASSEMBLY FOR A COUNTERTOP APPLIANCEJune 2024July 2025Allow1310NoNo
18757361Ceramic-based composite material used for low-concentration formaldehyde degradation and preparation method thereforJune 2024January 2025Allow710NoNo
18749322METHOD AND DEVICE FOR TREATMENT OF LIQUID HYDROCARBONSJune 2024January 2025Allow710NoNo
18720840METHOD FOR THE PREPARATION OF POLYMER POLYOLSJune 2024January 2025Allow701NoNo
18745274GAS MICRO REACTOR UTILIZING MEMBRANE PACKAGINGJune 2024December 2025Allow1820NoNo
18738406WEAR-INDICATING MIXING AND DISPERSION BLADEJune 2024December 2024Allow3110YesNo
18717873REACTION SYSTEM FOR PREPARING SODA ASHJune 2024March 2025Allow900NoNo
18732235CEMENT MIXER AND MULTIPLE PURPOSE PUMPER (CMMP) FOR LAND RIGJune 2024July 2025Allow1311YesNo
18677069MIXING FUNNELMay 2024December 2025Allow1910NoNo
18676142ACID MIXING SYSTEMMay 2024January 2026Allow2010NoNo
18675304AUTOMATED CLEAN IN PROCESS (CIP) SYSTEMMay 2024November 2025Allow1720NoNo
18674415SYSTEMS AND METHODS FOR MONITORING ORBITAL SHAKER HEALTHMay 2024April 2025Allow1120NoNo
18674300Process And System For Recovering Lithium From Lithium-Ion BatteriesMay 2024June 2025Allow1310NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for art-unit 1774.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
217
Examiner Affirmed
150
(69.1%)
Examiner Reversed
67
(30.9%)
Reversal Percentile
43.1%
Lower than average

What This Means

With a 30.9% reversal rate, the PTAB reverses the examiner's rejections in a meaningful percentage 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
810
Allowed After Appeal Filing
255
(31.5%)
Not Allowed After Appeal Filing
555
(68.5%)
Filing Benefit Percentile
46.4%
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, 31.5% 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.

Art Unit 1774 - Prosecution Statistics Summary

Executive Summary

Art Unit 1774 is part of Group 1770 in Technology Center 1700. This art unit has examined 17,764 patent applications in our dataset, with an overall allowance rate of 74.4%. Applications typically reach final disposition in approximately 30 months.

Comparative Analysis

Art Unit 1774's allowance rate of 74.4% places it in the 43% percentile among all USPTO art units. This art unit has a below-average allowance rate compared to other art units.

Prosecution Patterns

Applications in Art Unit 1774 receive an average of 1.64 office actions before reaching final disposition (in the 30% percentile). The median prosecution time is 30 months (in the 54% 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 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.