USPTO Art Unit 1794 Prosecution Statistics

Art Unit Information

Art Unit: 1794
Group: 1790
Tech Center: 1700
Total Cases: 17,909
Last Active: October 2025

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19365820METHOD FOR MAKING PEROVSKITE ELECTRODESOctober 2025March 2026Allow400NoNo
192477223D-TRIPTYCENE BASED MICROPOROUS POLYMER AS ELECTROCATALYST FOR HYDROGEN EVOLUTION REACTIONJune 2025September 2025Allow300NoNo
19219256SILVER ION STERILIZATION SOLUTION PREPARATION SYSTEMMay 2025August 2025Allow200NoNo
19216398PROCESS FOR PRODUCING A CARBON PRODUCT AND CARBON FIBERS THROUGH A CARBON NEUTRAL OR CARBON NEGATIVE PROCESSMay 2025January 2026Allow820YesNo
19211264PREPARATION METHOD FOR GRADIENT NEAR-EQUIAXED CRYSTAL CR COATING ON THE SURFACE OF ZIRCONIUM ALLOY CLADDINGMay 2025August 2025Allow310YesNo
19201838TANTALUM SPUTTERING TARGET WITH IMPROVED PERFORMANCE AND PREDICTABILITY AND METHOD OF MANUFACTURINGMay 2025December 2025Allow720NoNo
18848811METHOD FOR SIMULTANEOUSLY ACHIEVING SUPERHYDROPHOBIC AND SUPEROLEOPHOBIC SURFACE ON 3,000 SERIES ALUMINUM ALLOY IN ANODIC OXIDATION PROCESS WITHOUT PRE-PATTERNING STEPApril 2025February 2026Allow1610NoNo
19098014OPTIMIZING CADMIUM (CD) ALLOY SOLAR CELLS WITH SPUTTERED COPPER-DOPPED ZINC TELLURIDE (ZNTE:CU) BACK CONTACTS IN THE PRESENCE OF HYDROGENApril 2025July 2025Allow410YesNo
19091073METHOD FOR SIZE-CONTROLLED SYNTHESIS OF TRANSITION METAL CYANIDE COORDINATION COMPOUNDMarch 2025September 2025Allow611NoNo
19086691WATER ELECTROLYZER CELLS AND METHODS FOR ELECTROLYZING WATERMarch 2025August 2025Allow521YesNo
19114304SYSTEM AND PROCESS FOR PROGRESSIVE REFRACTORY ORE TRANSFORMATION FOR COPPER LEACHINGMarch 2025August 2025Allow501NoNo
19076491MN-AG ELECTROCATALYST AND METHOD FOR GENERATING HYDROGEN AND OXYGENMarch 2025May 2025Allow300NoNo
19054351Separators for Gaseous Products in Oxocarbon ElectrolyzersFebruary 2025August 2025Allow610NoNo
19099138METHOD FOR OPERATING AN ELECTROLYSIS SYSTEM, AND ELECTROLYSIS SYSTEMJanuary 2025January 2026Allow1131YesNo
18998221METHOD OF ELECTROLYSING HYDROGEN BROMIDE AFTER H2SO4 SYNTHESISJanuary 2025June 2025Allow500NoNo
19035618MULTI-STACK ELECTROLYZER MODULEJanuary 2025July 2025Allow611NoNo
19031111Method for improving the uniformity of rare earth nickelate thin films deposited by reactive magnetron sputteringJanuary 2025August 2025Allow720YesNo
19027389COMPRESSION CLAMPS FOR ELECTROCHEMICAL STACKSJanuary 2025April 2025Allow300NoNo
19022458REFRIGERATOR TO REDUCE THE DETERIORATION RATE OF STORED ITEMS USING PLASMA AND PHOTOCATALYSTJanuary 2025March 2025Allow200NoNo
18993353METHOD OF ELECTROLYSING HYDROGEN BROMIDE AFTER BROMINATIONJanuary 2025February 2026Abandon1310NoNo
19014165DYNAMIC VACUUM SEAL SYSTEM FOR PHYSICAL VAPOR DEPOSITION SPUTTER APPLICATIONSJanuary 2025March 2025Allow200NoNo
19011308DEVICES, SYSTEMS, AND METHODS FOR ELECTROCHEMICALLY PURIFYING HYDROGENJanuary 2025July 2025Allow621YesNo
19009396OPTIMIZING CADMIUM (CD) ALLOY SOLAR CELLS WITH SPUTTERED COPPER-DOPPED ZINC TELLURIDE (ZNTE:CU) BACK CONTACTS IN THE PRESENCE OF HYDROGENJanuary 2025July 2025Allow611YesNo
18983796FUEL MANUFACTURING METHOD AND FUEL MANUFACTURING APPARATUSDecember 2024November 2025Allow1100NoNo
18971510MULTICATHODE PVD SYSTEM FOR HIGH ASPECT RATIO BARRIER SEED DEPOSITIONDecember 2024November 2025Allow1130YesNo
18967014METHOD FOR FORMING A BISMUTH/TUNGSTEN OXIDE HETEROSTRUCTURE FILMDecember 2024October 2025Allow1000NoNo
18870256ELECTRODE FOR NITRATE REDUCTIONNovember 2024June 2025Allow601NoNo
18959790ELECTROCATALYTIC WATER SPLITTING USING a-Ag2WO4@Mn3O4 NANOCOMPOSITESNovember 2024January 2025Allow200NoNo
18958411SURFACE TREATMENT METHODNovember 2024September 2025Allow1000NoNo
18955621MEMBRANE ELECTRODE ASSEMBLY FOR HYDROGEN PRODUCTION, ELECTROCHEMICAL CELL COMPRISING THE SAME, AND METHOD FOR HYDROGEN PRODUCTION USING THE SAMENovember 2024February 2026Allow1510NoNo
18950977ELECTROLYZER SYSTEM INCLUDING A HEAT PUMP AND METHOD OF OPERATING THEREOFNovember 2024September 2025Allow1011NoNo
18949563SOEC INTEGRATION WITH ULTRA HOT STEAMNovember 2024February 2026Allow1520NoNo
18945649SUBSTRATE PROCESSING APPARATUSNovember 2024June 2025Allow700NoNo
18946208LI RECOVERY PROCESSES AND ONSITE CHEMICAL PRODUCTION FOR LI RECOVERY PROCESSESNovember 2024August 2025Allow911NoNo
18864297A CO2RR-OOR ELECTROLYSER SYSTEM AND RELATED PROCESS FOR FACILITATING THE CAPTURE AND CONVERSION OF CO2 IN GAS MIXTURE STREAMSNovember 2024February 2025Allow300YesNo
18939732FILM FORMATION APPARATUS AND FILM FORMATION METHOD OF GALLIUM NITRIDE FILMNovember 2024February 2026Allow1520NoNo
18938913FILM FORMING APPARATUS AND FILM FORMING METHODNovember 2024October 2025Allow1220NoNo
18938059ROW BASED ACTIVATION APPARATUS FOR AN ELECTROCHEMICAL ADDITIVE MANUFACTURING SYSTEMNovember 2024November 2025Allow1201NoNo
18931664SYSTEM FOR TARGET ARCING MAPPING AND PLASMA DIAGNOSISOctober 2024May 2025Allow600NoNo
18861704DIRECT ELECTROCHEMICAL EXTRACTION OF LITHIUM FROM ORESOctober 2024July 2025Allow811YesNo
18926504APPARATUS AND METHOD OF DAMAGE MITIGATION AND STEP COVERAGE ENHANCEMENTOctober 2024November 2025Allow1310NoNo
18923813PVD TARGET AND USE THEREOFOctober 2024March 2025Allow510NoNo
18859388METHOD FOR SIMULTANEOUSLY ACHIEVING SUPERHYDROPHOBIC AND SUPEROLEOPHOBIC SURFACE ON 5,000 SERIES ALUMINUM ALLOY IN ANODIC OXIDATION PROCESS WITHOUT PRE-PATTERNING STEPOctober 2024January 2026Allow1510NoNo
18921565METHODS AND APPARATUS FOR EXTRACTING METALS FROM MATERIALSOctober 2024July 2025Allow910NoNo
18919831SPUTTER SYSTEM WITH MAGNET MOTION SOURCEOctober 2024September 2025Allow1110YesNo
18857034METHOD FOR OPERATING AN ELECTROLYSIS PLANT, AND ELECTROLYSIS PLANTOctober 2024November 2025Allow1301NoNo
18915728SYSTEM FOR STERILIZING EQUIPMENT, ASSOCIATED METHOD, AND CHLORINE DIOXIDE GAS GENERATING DEVICE FOR USE WITH SAMEOctober 2024March 2025Allow511NoNo
18912526HYBRID ELECTROCATALYST LAYERS FOR MEMBRANE-BASED ELECTROCHEMICAL DEVICES AND PROCESSES FOR MAKING THE SAMEOctober 2024March 2025Allow510NoNo
18910746Cu-Co-Containing Electrode and Method of UseOctober 2024November 2025Allow1310NoNo
18854745METHOD FOR SIMULTANEOUSLY ACHIEVING SUPERHYDROPHOBIC AND SUPEROLEOPHOBIC SURFACE ON 1000 SERIES ALUMINUM ALLOY IN ANODIC OXIDATION PROCESS WITHOUT PRE-PATTERNING STEPOctober 2024January 2026Allow1610NoNo
18901662SURFACE TREATMENT METHODSeptember 2024December 2025Allow1410NoNo
18900797Electrolytic Synthesis of Copper(I) Chloride and Copper(II) ChlorideSeptember 2024March 2025Allow510YesNo
18900244ANODIZED ENCLOSURE WITH FINGERPRINT RESISTANT SEALING TECHNOLOGYSeptember 2024March 2026Abandon1810NoNo
18851145ELECTROCHEMICAL OXIDATION OF CYCLOALKENES TO FORM ALPHA, OMEGA -DICARBOXYLIC ACIDS AND KETOCARBOXYLIC ACIDSSeptember 2024January 2026Allow1610NoNo
18890298ION BEAM PROCESSING APPARATUS, ELECTRODE ASSEMBLY, AND METHOD OF CLEANING ELECTRODE ASSEMBLYSeptember 2024October 2025Allow1310NoNo
18887477PVD Deposited Ternary and Quaternary NiTi Alloys and Methods of Making SameSeptember 2024September 2025Allow1220NoNo
18847175SINTERED BODY, SPUTTERING TARGET, OXIDE THIN FILM, THIN FILM TRANSISTOR, ELECTRONIC EQUIPMENT, AND METHOD FOR PRODUCING SINTERED BODYSeptember 2024January 2026Allow1610NoNo
18845605COATED MEMBERSeptember 2024November 2025Allow1410NoNo
18819484Compressible Flow Distribution System for Electrolyzer PlatesAugust 2024February 2025Allow610NoNo
18815625SEMICONDUCTOR PROCESSING EQUIPMENT PART AND METHOD FOR MAKING THE SAMEAugust 2024February 2026Allow1830YesNo
18814528POWER CONVERSION SYSTEMS AND METHODSAugust 2024October 2025Allow1350YesNo
18840392PRODUCTION METHOD FOR SINGLE CRYSTAL SEMICONDUCTOR FILM, PRODUCTION METHOD FOR MULTILAYER FILM OF SINGLE CRYSTAL SEMICONDUCTOR FILM, AND SEMICONDUCTOR ELEMENTAugust 2024October 2025Abandon1401NoNo
18811486P-TYPE GALLIUM OXIDE FILM, AND PREPARATION METHOD AND APPLICATION THEREOFAugust 2024March 2025Allow710NoNo
18838890VACUUM LAYER DEPOSITION APPARATUS AND METHOD OF DEPOSITING A LAYER ON A SUBSTRATE, ESPECIALLY ON A SUBSTRATE COMPRISING INDENTATIONS IN THE SURFACE TO BE COATEDAugust 2024October 2025Allow1400NoNo
18799515MOLYBDENUM MONOLITHIC PHYSICAL VAPOR DEPOSITION TARGETAugust 2024July 2025Allow1110YesNo
18835935ELECTRODIALYSIS DEVICEAugust 2024November 2025Allow1500YesNo
18792991PULSED VOLTAGE WAVEFORM DELIVERY FOR DEPOSITIONAugust 2024July 2025Allow1110YesNo
18791036WET ETCH APPARATUSJuly 2024August 2025Allow1200NoNo
18789424DEPOSITION SYSTEM AND METHODJuly 2024November 2025Allow1610YesNo
18833935LOW-FRICTION LONG-LIFE ULTRA-LATTICE COMPOSITE COATING AS WELL AS PREPARATION METHOD AND USE THEREOFJuly 2024March 2025Allow710NoNo
18786523Method for Improving Deposition ProcessJuly 2024December 2025Allow1620NoNo
18780996ELECTROCHEMICAL SYSTEM WITH CONFINED ELECTROLYTEJuly 2024November 2025Allow1610NoNo
18778577HYBRID ELECTROCATALYST LAYERS FOR MEMBRANE-BASED ELECTROCHEMICAL DEVICES AND PROCESSES FOR MAKING THE SAMEJuly 2024February 2025Allow710NoNo
18778683WAFER MANUFACTURING APPARATUSJuly 2024July 2025Allow1210YesNo
18774819ACTIVELY COOLED ANODE FOR SPUTTERING PROCESSESJuly 2024July 2025Allow1210NoNo
18770976CARRIER WITH VERTICAL GRID FOR SUPPORTING SUBSTRATES IN COATERJuly 2024August 2025Allow1310YesNo
18769687PHYSICAL VAPOR DEPOSITION APPARATUSJuly 2024July 2025Allow1310NoNo
18763276REDUCTION CELL FOR PRODUCING ALUMINUMJuly 2024September 2025Allow1510NoNo
18761120INTEGRATED THERMIONIC DIODE AND MOLTEN OXIDE ELECTROLYSIS CELLJuly 2024December 2025Allow1801NoNo
18758256ORE DISSOLUTION AND IRON CONVERSION SYSTEMJune 2024November 2025Allow1710NoNo
18723935ELECTROCHEMICAL CARBON OXIDES REDUCTION TO ETHYLENEJune 2024November 2024Allow400NoNo
18723895METHOD FOR DIRECTLY PREPARING TRIVALENT CHROMIUM COMPOUND BY ELECTROCHEMICAL OXIDATION OF FERROCHROMEJune 2024March 2025Allow800NoNo
18723891METHOD AND DEVICE FOR PREPARING TRIVALENT CHROMIUM SALT BY ELECTROCHEMICAL OXIDATION OF FERROCHROME IN ACIDIC SYSTEMJune 2024April 2025Allow910NoNo
18752780PVD APPARATUS AND METHODJune 2024June 2025Allow1200NoNo
18722727Method for Producing a Substoichiometric Layer of Titanium, Vanadium, Tungsten or Molybdenum OxideJune 2024June 2025Allow1210NoNo
18750807METHODS AND APPARATUS FOR EXTRACTING METALS FROM MATERIALSJune 2024May 2025Allow1121NoNo
18748650SEMICONDUCTOR PROCESSING TOOL AND METHODS OF OPERATIONJune 2024December 2025Allow1821YesNo
18720108An Alkaline Electrolyzer ArrangementJune 2024February 2025Allow810YesNo
18741456APPARATUSES AND METHODS FOR MULTI-STAGE ELECTROLYSISJune 2024September 2025Allow1520YesNo
18741464SPUTTER TARGET MAGNETJune 2024October 2025Allow1621YesNo
18673987MOLTEN OXIDE ELECTROLYSIS METHODS AND RELATED SYSTEMSMay 2024March 2025Allow1011YesNo
18712046ELECTRON-BEAM-ASSISTED SPUTTERING DEVICE AND METHOD THEREFORMay 2024October 2025Allow1710NoNo
18711644SYSTEM, ELECTRODE AND METHOD FOR EFFICIENT HYDROGEN GENERATION FROM WATERMay 2024January 2025Allow820NoNo
18662476Advanced Beneficiation Process for Beneficiation, Mobilization, Extraction, Separation, and Concentration of Mineralogical ResourcesMay 2024June 2025Allow1310NoNo
18660111COPLANARITY IMPROVEMENT OF HIGH-RATE CU PILLAR PROCESSES USING HIGH AGITATION TO ENABLE USE OF HIGH ACID, LOW CU CHEMISTRIESMay 2024December 2025Allow1910NoNo
18658455WAFER PROCESSING APPARATUS AND WAFER PROCESSING METHODMay 2024June 2025Allow1320NoNo
18656757SYSTEMS AND METHODS FOR ELECTROCHEMICAL GENERATION OF SYNGAS AND OTHER USEFUL CHEMICALSMay 2024January 2026Allow2030YesNo
18655528Fabric-type titanium oxide-based porous water electrolysis electrode and method for manufacturing the same, and water electrolysis device comprising the sameMay 2024January 2026Allow2010NoNo
18654389Methods And Apparatus For Depositing Amorphous Indium Tin Oxide FilmMay 2024July 2025Allow1410NoNo
18654771SOLID OXIDE ELECTROLYZER SYSTEM INCLUDING AIR BYPASSMay 2024November 2024Allow701NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for art-unit 1794.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
676
Examiner Affirmed
528
(78.1%)
Examiner Reversed
148
(21.9%)
Reversal Percentile
8.0%
Lower than average

What This Means

With a 21.9% 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
2266
Allowed After Appeal Filing
388
(17.1%)
Not Allowed After Appeal Filing
1878
(82.9%)
Filing Benefit Percentile
2.9%
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, 17.1% 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 1794 - Prosecution Statistics Summary

Executive Summary

Art Unit 1794 is part of Group 1790 in Technology Center 1700. This art unit has examined 17,909 patent applications in our dataset, with an overall allowance rate of 46.0%. Applications typically reach final disposition in approximately 40 months.

Comparative Analysis

Art Unit 1794's allowance rate of 46.0% places it in the 5% 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 1794 receive an average of 2.34 office actions before reaching final disposition (in the 80% percentile). The median prosecution time is 40 months (in the 14% 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 multiple rounds of 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.