USPTO Art Unit 1772 Prosecution Statistics

Art Unit Information

Art Unit: 1772
Group: 1770
Tech Center: 1700
Total Cases: 14,729
Last Active: October 2025

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19368121Methods And Systems For Separating MetalsOctober 2025January 2026Allow310NoNo
19312867CYCLOOCTANE CONTAINING SEAL SWELLING COMPOSITIONS AND METHODS FOR USE OF SAMEAugust 2025November 2025Allow200NoNo
19296083HIERARCHICALLY ORDERED CRYSTALLINE MICROPOROUS MATERIALS WITH LONG-RANGE MESOPOROUS ORDER HAVING CUBIC SYMMETRYAugust 2025January 2026Allow500NoNo
19245521RECYCLABLE CATALYST FOR CARBON DIOXIDE CAPTUREJune 2025September 2025Allow310NoNo
19244135Methods And Systems For Separating MetalsJune 2025September 2025Allow310NoNo
19244687SALINE WATER VAPOR ABSORPTION REFRIGERATION SYSTEMJune 2025August 2025Allow200YesNo
19244806COMMON HOUSING VAPOR ABSORPTION REFRIGERATION SYSTEMJune 2025August 2025Allow200YesNo
19244726DUAL HOUSING VAPOR ABSORPTION REFRIGERATION SYSTEMJune 2025July 2025Allow100YesNo
19240066Synthetic Fuel SynthesisJune 2025January 2026Abandon710NoNo
19239753METHODS AND SYSTEMS FOR STARTING UP AND OPERATING ONE OR MORE VAPOR-RECOMPRESSION UNITSJune 2025November 2025Allow510NoNo
19238128CATALYST FOR ETHYLBENZENE DEHYDROGENATION TO FORM STYRENEJune 2025August 2025Allow200NoNo
19214836DOME-SHAPED SOLAR WATER PURIFICATION SYSTEMMay 2025December 2025Allow610NoNo
19206605HYDROCARBON LIQUID BASED CHEMICAL COMPOSITIONS AND TREATMENT METHODS USING SAME FOR REMEDIATING H2S AND OTHER CONTAMINANTS IN FLUIDS AND MIXTURES OF CONTAMINATED FLUIDSMay 2025October 2025Allow620NoNo
19202657CHEMICAL DISTILLATION SYSTEM WITH IN SITU ANALYTICSMay 2025March 2026Allow1011NoNo
19197645UPGRADING OF LOW VALUE LIPID FEEDSTOCKS FOR REFINERY PROCESSINGMay 2025August 2025Allow300NoNo
19192746FIBER BED FILTER AND MIST ELIMINATOR SYSTEM WITH EHNANCED DRAINAGEApril 2025November 2025Allow610YesNo
19191634BRINE WATER DESALINATION SYSTEM AND METHOD OF CONTROLApril 2025August 2025Allow410NoNo
19191551METHOD FOR CONTROLLING DESALINATION SYSTEMApril 2025August 2025Allow310NoNo
19191480DESALINATION METHODApril 2025August 2025Allow410YesNo
19176118CHEMICAL LOOPING GASIFICATION METHOD FOR IRON-RICH SLUDGEApril 2025August 2025Allow500NoNo
19173859METHOD AND DEVICE FOR REGULATING WASTE ORGANIC POLYMER MATERIAL PYROLYSIS PRODUCTSApril 2025August 2025Allow410NoNo
19095510SYSTEMS, METHODS, AND APPARATUS FOR MECHANICALLY REMOVING LIQUID FROM MATERIALMarch 2025May 2025Allow200YesNo
19081394System and Method for Producing Renewable Natural Gas from BiogasMarch 2025May 2025Allow210NoNo
19072986PHOTODEGRADATION OF CONTAMINANTS VIA NANOCOMPOSITEMarch 2025May 2025Allow200NoNo
19061498PROPYLENE OLIGOMERIZATION PROCESSES WITH ENHANCED OLEFINIC YIELDSFebruary 2025June 2025Allow300NoNo
19049466CONVERTER-FREE PV-POWERED WATER DESALINATION SYSTEM FOR REMOTE COMMUNITIESFebruary 2025August 2025Allow610YesNo
19102424SPRAY-DRIER FOR THE PRODUCTION OF ATOMIZED CERAMIC POWDER FROM A WATER SUSPENSION OF CERAMIC MATERIALFebruary 2025January 2026Allow1111NoNo
19048065PHOTOCATALYTIC COMPOSITE MATERIALS AND METHODS OF USING THE SAME FOR WATER AND/OR SEDIMENT REMEDIATIONFebruary 2025October 2025Allow810YesNo
19046317SYSTEMS AND METHODS OF RENEWABLE NATURAL GAS PROCESSINGFebruary 2025May 2025Allow410NoNo
19041482PRODUCTION OF HYDROCARBON FUELS FROM LIGNIN-DERIVED MATERIALSJanuary 2025August 2025Allow610NoNo
19040022Methods And Systems For Separating MetalsJanuary 2025May 2025Allow310NoNo
19038839METHOD AND SYSTEM FOR METHANE REDUCTION IN WATER BODIESJanuary 2025March 2026Abandon1311NoNo
19022557CATALYST SELECTION FOR IMPROVED LIPID FEEDSTOCK CONVERSIONJanuary 2025June 2025Allow510NoNo
18994018PRODUCTION OF ETHYLENE AND PROPYLENE FROM PYROLYSIS PLASTIC OILJanuary 2025June 2025Allow500NoNo
19015470CARBOXYMETHYL CELLULOSE HYDROGEL LOADED WITH TITANIUM OXIDE NANOPARTICLES FOR WASTEWATER TREATMENTJanuary 2025August 2025Allow810NoNo
18992414PROCESS FOR THE RECYCLING OF WASTE PLASTICS BASED OILJanuary 2025September 2025Allow810NoNo
19012317Process for Hydroprocessing of Non-Petroleum Feedstocks with Hydrogen ProductionJanuary 2025June 2025Allow510NoNo
19006127SYSTEMS AND METHODS FOR MAKING HYDROCARBON COMPOSITIONS DERIVED FROM PYROLYSIS OF POST-CONSUMER AND/OR POST-INDUSTRIAL PLASTICSDecember 2024January 2026Allow1310NoNo
19004516DESULFURIZATION AND DENITRIFICATION AGENT AND APPLICATION THEREOFDecember 2024December 2025Allow1211YesNo
19006100SYSTEMS AND METHODS FOR MAKING HYDROCARBON COMPOSITIONS DERIVED FROM PYROLYSIS OF POST-CONSUMER AND/OR POST-INDUSTRIAL PLASTICSDecember 2024May 2025Allow410NoNo
19006116SYSTEMS AND METHODS FOR MAKING HYDROCARBON COMPOSITIONS DERIVED FROM PYROLYSIS OF POST-CONSUMER AND/OR POST-INDUSTRIAL PLASTICSDecember 2024August 2025Allow820YesNo
19006114SYSTEMS AND METHODS FOR MAKING HYDROCARBON COMPOSITIONS DERIVED FROM PYROLYSIS OF POST-CONSUMER AND/OR POST-INDUSTRIAL PLASTICSDecember 2024March 2026Abandon1510NoNo
19006107SYSTEMS AND METHODS FOR MAKING HYDROCARBON COMPOSITIONS DERIVED FROM PYROLYSIS OF POST-CONSUMER AND/OR POST-INDUSTRIAL PLASTICSDecember 2024February 2026Abandon1320NoNo
19002899EQUIPMENT FOR PRODUCTION OF BUTANOL AND OCTANOL AND TRIPLE-EFFECT DISTILLATION METHODDecember 2024September 2025Allow921NoNo
18986289METHOD OF PRODUCTION OF BICYCLIC HYDROCARBONSDecember 2024April 2025Allow401NoNo
18874570PLANT SQUALANE COMPOSITION, PREPARATION METHOD THEREOF, AND APPLICATION THEREOFDecember 2024May 2025Allow500YesNo
18978690PROCESS FOR INCREASING LIQUID FUEL YIELD FROM CARBON OXIDESDecember 2024July 2025Allow710NoNo
18975601CONCENTRATED SOLAR ENERGY BASED PHOTOCATALYTIC FLASH DESALINATION SYSTEMDecember 2024July 2025Allow811YesNo
18872679PROCESS AND APPARATUS FOR TREATING METHANE-CONTAINING GASDecember 2024June 2025Allow700YesNo
18954559EFFICIENT HEAT-INDUCTION DECOKING DEVICE AND METHOD FOR THERMAL CONVERSION OF SOLID FUELSNovember 2024March 2025Allow410NoNo
18948759SYSTEMS, ANALYZERS, CONTROLLERS, AND ASSOCIATED METHODS TO ENHANCE FLUID SEPARATION FOR DISTILLATION OPERATIONSNovember 2024July 2025Allow811YesNo
18941013CONTINUOUS RECIRCULATION FOR SEPARATION OF FLUIDS PRODUCED DURING DRILL OUT AND FLOW BACKNovember 2024March 2025Allow410NoNo
18928431METHODS AND ASSEMBLIES FOR ENHANCING CONTROL OF REFINING PROCESSES USING SPECTROSCOPIC ANALYZERSOctober 2024August 2025Allow1020YesNo
18925643SYSTEMS AND METHODS FOR REMOVING CARBON FROM REACTION CHAMBERS IN PYROLYSIS REACTORSOctober 2024February 2026Allow1611NoNo
18918411DEVICE THAT TREATS WATER AND/OR AT LEAST ONE CHROMOPHORE WITH MULTIPLE WAVELENGTHS OF LIGHT AND SOUNDOctober 2024March 2025Allow510NoNo
18916835SOLID OXIDE AND CHEMICALLY-TREATED SOLID OXIDE CATALYSTS FOR THE PYROLYSIS OF POLYETHYLENEOctober 2024February 2025Allow410NoNo
18913149CHLORINATOR WITH ONBOARD FLOW SENSOROctober 2024April 2025Allow620YesNo
18910255System and Method for Producing Renewable Natural Gas from BiogasOctober 2024December 2024Allow210NoNo
18897713MODULAR WATER PURIFICATION SYSTEMSeptember 2024August 2025Allow1010NoNo
18830007Eco-Friendly Biodiesel Production Method Using Waste Olive Oil and Pulp-Derived CatalystsSeptember 2024April 2025Allow710NoNo
18826471REMOVABLE INNER FRAME ASSEMBLY FOR CLEAN ENVIRONMENTSSeptember 2024December 2024Allow310NoNo
18820577PRODUCTION METHOD AND PRODUCTION DEVICE FOR WATER FOR PURE WATER, AND PRODUCTION METHOD AND PRODUCTION SYSTEM FOR PURE WATERAugust 2024February 2026Allow1811YesNo
18816753HYDROTHERMAL TREATMENTAugust 2024March 2025Allow720NoNo
18808797COMPOSITIONS AND METHODS FOR THE PURIFICATION OF ISOPRENOIDSAugust 2024March 2025Allow701YesNo
18808193METHODS FOR PRODUCING AVIATION FUELSAugust 2024February 2026Allow1801NoNo
18837937CLEANING PROCESS OF A VINYL AROMATIC COMPOUNDS DISTILLATION UNIT AND PROCESSES INCLUDING SUCH CLEANING PROCESSAugust 2024March 2025Allow710NoNo
18801971SEPARATION OF SULFUROUS MATERIALSAugust 2024September 2024Allow110NoNo
18799966PROCESS FOR CONVERTING OLEFINS TO JET FUEL WITH PARALLEL REACTORSAugust 2024July 2025Allow1110NoNo
18798410SUSTAINABLE BRINE TREATMENT SYSTEM AND PROCESSAugust 2024January 2025Allow510YesNo
18797824ALL-WEATHER SOLAR SEAWATER DESALINATION DEVICE AND METHODAugust 2024March 2025Allow711NoNo
18785174CONTINUOUS RECIRCULATION FOR SEPARATION OF FLUIDS PRODUCED DURING DRILL OUT AND FLOW BACKJuly 2024October 2024Allow300NoNo
18832822Process To Conduct the Pyrolysis of Biomass And/Or Waste Plastic in An Electrified Fluidized And/Or Spouted Bed ReactorJuly 2024July 2025Allow1111NoNo
18832785ELECTRIFIED PROCESS TO CONDUCT TRANSFORMATION OF ALCOHOLS INTO CORRESPONDING OLEFINS IN A FLUDIZED BED REACTORJuly 2024March 2025Allow810NoNo
18780413Synthetic Fuel SynthesisJuly 2024September 2025Abandon1421YesNo
18777864METHOD OF CRACKING A HYDROCARBONJuly 2024March 2025Allow810YesNo
18775253BOX CHAIN CONVEYOR ADSORPTION MOVING BED WITH HEAT INTEGRATIONJuly 2024January 2025Allow601NoNo
18769774AQUEOUS SOLUTIONS AND METHODS OF USING SAME FOR REMEDIATING CONTAMINANTS IN CONTAMINATED GASSESJuly 2024October 2024Allow300NoNo
18770059ACCUMULATOR AND DISSIPATION ASSEMBLY FOR CAPTURING EXIGENT VENTED VOLATILE FLUIDSJuly 2024January 2025Allow611NoNo
18770192HIGH-ENERGY LASER SURFACE PROCESSING FOR INDUSTRIAL COLUMN PACKINGJuly 2024April 2025Allow911YesNo
18764253HYDROGEN PRODUCTION DEVICE, GAS-LIQUID SEPARATION APPARATUS THEREOF, AND ELECTROLYTE AND HYDROGEN SEPARATING METHODJuly 2024March 2025Allow910NoNo
18753666PYROLYSIS OF LOW-DENSITY POLYETHYLENE USING A METAL-DOPED ZEOLITEJune 2024September 2024Allow210YesNo
18740992BIOGAS HALOGEN PROCESSING SYSTEMS AND METHODSJune 2024August 2025Allow1420NoNo
18738697Process for the Production of Renewable Distillate-Range HydrocarbonsJune 2024December 2024Allow600NoNo
18717853A METHOD FOR PRODUCING RENEWABLE GAS, RENEWABLE NAPHTHA, AND RENEWABLE JET FUELJune 2024October 2025Allow1621NoNo
18736752HEAT INTEGRATED PROCESS AND SYSTEM FOR ORGANIC SOLVENT PRODUCTION USING VAPOR RECOMPRESSIONJune 2024October 2025Allow1610NoNo
18736236HYDROGENATION OF ACETYLENES IN A HYDROCARBON STREAMJune 2024May 2025Allow1101YesNo
18735232RECYCLE CONTENT CRACKED EFFLUENTJune 2024March 2026Allow2120NoNo
18679087METHODS FOR HYDROCRACKING HYDROCARBONSMay 2024February 2026Allow2100NoNo
18672158SYSTEM AND METHOD FOR DISTILLATIONMay 2024November 2024Allow610NoNo
18672644CONTROL SCHEME FOR AMINE CONTACTORMay 2024December 2024Allow600NoNo
18669691Method of Improving Selective Hydrogenation of Unsaturated Hydrocarbon in Aromatic Fraction Through Catalyst PretreatmentMay 2024November 2024Allow600NoNo
18670008METHOD FOR ENHANCING VOLUMETRIC CAPACITY IN GAS STORAGE AND RELEASE SYSTEMSMay 2024September 2025Allow1620NoNo
18667451LOW ENERGY LIQUID DEGASIFICATION DEVICES AND METHODSMay 2024June 2025Allow1310YesNo
18664822METHODS FOR FORMING LIGHT OLEFINS THAT INCLUDE USE OF COOLED PRODUCT AS A RECYCLED QUENCH STREAMMay 2024January 2025Allow800YesNo
18710414Process To Conduct An Alkane Transformation Into Olefins In An Electrified Fluidized Bed ReactorMay 2024July 2024Allow200YesNo
18662222Pyrolysis Reactor System and MethodMay 2024August 2025Allow1511NoNo
18660870METHOD OF PROVIDING A BIO-OIL TO A HYDRODEOXYGENATION REACTORMay 2024January 2025Allow800NoNo
18661278SYSTEMS AND METHODS FOR PRODUCING HIGH PURITY AROMATICS FROM A MIXED AROMATIC FEED STREAMMay 2024July 2025Allow1410NoNo
18656750METHOD FOR PURIFYING ISOBUTENE FROM A C4 STREAM AND PROCESS SYSTEM THEREFORMay 2024July 2025Allow1410YesNo
18653431METHODS FOR CONVERTING C2+ OLEFINS TO HIGHER CARBON NUMBER OLEFINSMay 2024June 2025Allow1410YesNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for art-unit 1772.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
221
Examiner Affirmed
157
(71.0%)
Examiner Reversed
64
(29.0%)
Reversal Percentile
32.0%
Lower than average

What This Means

With a 29.0% reversal rate, the PTAB affirms the examiner's rejections in the vast majority 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
908
Allowed After Appeal Filing
294
(32.4%)
Not Allowed After Appeal Filing
614
(67.6%)
Filing Benefit Percentile
50.9%
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, 32.4% 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 face challenges. Ensure your case has strong merit before committing to full Board review.

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

Art Unit 1772 - Prosecution Statistics Summary

Executive Summary

Art Unit 1772 is part of Group 1770 in Technology Center 1700. This art unit has examined 14,729 patent applications in our dataset, with an overall allowance rate of 68.1%. Applications typically reach final disposition in approximately 28 months.

Comparative Analysis

Art Unit 1772's allowance rate of 68.1% places it in the 27% 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 1772 receive an average of 1.74 office actions before reaching final disposition (in the 38% percentile). The median prosecution time is 28 months (in the 64% 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.