USPTO Art Unit 1731 Prosecution Statistics

Art Unit Information

Art Unit: 1731
Group: 1730
Tech Center: 1700
Total Cases: 15,172
Last Active: August 2025

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19294981WOOD PRESERVATIVE COMPOSITION COMPRISING 4,5-DICHLORO-2-OCTYLISOTHIAZOL-3(2H)-ONE, A METHOD TREATING A WOOD SUBSTRATE THEREWITH, AND A WOOD PRODUCT PRODUCED THEREFROMAugust 2025October 2025Allow210NoNo
19281245BENEFICIATION OF METAL SLAGS FOR USE AS CEMENT MATERIALJuly 2025January 2026Allow610NoNo
19263707HIGH-PERFORMANCE SODIUM ION ELECTROLYTES AND EFFICIENT METHODS FOR MAKING THE SAMEJuly 2025September 2025Allow210NoNo
19262763FISCHER-TROPSCH CATALYSTSJuly 2025December 2025Allow511YesNo
19244490METHOD OF PRODUCING HYDROGEN GAS THROUGH SODIUM BOROHYDRIDE HYDROLYSIS USING NANOCOMPOSITE CATALYSTJune 2025August 2025Allow200NoNo
19229190SULFURIZED PEROVSKITE NANOSHEETS, SYNTHESIS AND USES THEREOFJune 2025November 2025Allow511NoNo
19224372CEMENT ADDITIVES FOR RAPID STRENGTH DEVELOPMENTMay 2025January 2026Allow820YesNo
19221361METHOD FOR SYNTHESIZING SiO2Al2O3 CONTAINING SOL SOLUTION AND METHOD FOR FORMING POROUS ALUMINA FILMMay 2025August 2025Allow200NoNo
19214524METHOD FOR HYDROGEN GENERATION USING NANOCOMPOSITEMay 2025July 2025Allow200NoNo
19210266METHOD OF PRODUCING HYDROGEN GAS USING NANOCOMPOSITE CATALYSTMay 2025July 2025Allow200NoNo
19210805COPPER HYDROXY NITRATE/CALCIUM SILICATE @GRAPHITE-PHASE CARBON NITRIDE (Cu2(OH)3NO3/CaSiO3@g-C3N4) BASED PHOTOCATALYST FOR WASTEWATER TREATMENTMay 2025July 2025Allow200NoNo
19206421Carbon Black-Based Aqueous Suspensions with Improved StabilityMay 2025January 2026Allow821NoNo
19202064LIGHTWEIGHT AGGREGATE-BASED NON-STEAM-CURED HIGH-PERFORMANCE PIPE CULVERT AND PREPARATION METHOD THEREOFMay 2025August 2025Allow311NoNo
19195007g-C3N4@CoO/MgAl2O4 NANOCOMPOSITE FOR HYDROGEN GENERATIONApril 2025July 2025Allow300NoNo
19187586QUICK-SETTING MAGNESIUM BASED CEMENT AND CONCRETEApril 2025September 2025Allow510NoNo
19181124Geopolymer Formulations for Construction MaterialsApril 2025October 2025Allow610YesNo
19176246HIGH-PERFORMANCE SODIUM ION ELECTROLYTES AND EFFICIENT METHODS FOR MAKING THE SAMEApril 2025July 2025Allow310YesNo
19169072EMBEDDED HYDROTHERMAL-RESISTANT NiSn-CS NANO-CATALYST AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOFApril 2025December 2025Allow811YesNo
19095142EFFICIENT SOUND-ABSORBING LIGHTWEIGHT AGGREGATE CELLULAR CONCRETE, METHOD FOR PREPARING THE SAME, AND APPLICATION THEREOFMarch 2025July 2025Allow310NoNo
19096059NON-HYDRAULICALLY REACTIVE PARTICULATE MINERAL COMPOSITIONS FOR REDUCING CEMENT CONTENT IN CONCRETEMarch 2025October 2025Allow610NoNo
19075659g-C3N4@CuO/MgAl2O4 NANOCOMPOSITE SYNTHESIS FOR HYDROGEN GENERATIONMarch 2025June 2025Allow300NoNo
19072608WOOD PRESERVATIVE COMPOSITION COMPRISING 4,5-DICHLORO-2-OCTYLISOTHIAZOL-3(2H)-ONE, A METHOD TREATING A WOOD SUBSTRATE THEREWITH, AND A WOOD PRODUCT PRODUCED THEREFROMMarch 2025June 2025Allow310NoNo
19071723NANOCOMPOSITE OF GRAPHITIC C3N4, V2O5, and MgAl2O4 FOR HYDROGEN GENERATIONMarch 2025July 2025Allow410NoNo
19070165MANUFACTURING A NANOCOMPOSITEMarch 2025September 2025Allow720YesNo
19066790Co2O3-Bi2O3@SiO2 NANOCOMPOSITE AND METHOD OF PREPARATION THEREOFFebruary 2025June 2025Allow410NoNo
19067516HIGH TEMPERATURE REFRACTORY, METHOD FOR MAKING HIGH TEMPERATURE REFRACTORYFebruary 2025October 2025Allow811NoNo
19105072PROCESS FOR PREPARING A HIGH-PURITY NICKEL SULPHATE SOLUTIONFebruary 2025August 2025Allow610NoNo
19055967HYBRID-SUPPORTED CATALYST, METHOD OF PREPARING THEREOF, AND APPLICATION(S) THEREOFFebruary 2025December 2025Allow911YesNo
19101363WEATHER STABLE PEARLESCENT PIGMENTSFebruary 2025September 2025Allow810NoNo
19044142FABRICATION OF SiO2/Mn7O12Si/Pb2SiO4 NANOCOMPOSITES USING SOL-GEL METHODFebruary 2025August 2025Allow601NoNo
19042743PbTiO3/TiO2/Zn2Ti3O8 NANOCOMPOSITE MATERIAL AND METHOD OF PREPARATION THEREOFJanuary 2025June 2025Allow400NoNo
19039906FABRICATION OF PbO/Co3O4/MgO NANOCOMPOSITE MATERIAL USING PECHINI SOL-GEL METHODJanuary 2025July 2025Allow501NoNo
19037084CuMg0.5Mn1.5O4/CuO NANOCOMPOSITE MATERIAL AND METHOD OF MAKINGJanuary 2025May 2025Allow401NoNo
19029170Reactive Grinding Aids and Strength-Enhancing Agents for Slag and other MaterialsJanuary 2025July 2025Allow520YesNo
19024680INTEGRATED-PREPARATION AND APPLICATION METHODS OF UREA-FORMALDEHYDE (UF)-BASED MULTI-NUTRIENT BIODEGRADABLE POLYMERIC SLOW-RELEASE (SR) LIQUID AND GRANULAR FERTILIZERSJanuary 2025August 2025Allow710NoNo
19023190PREPARATION METHOD OF RUBBER POWDER-SEDIMENT-FLY ASH ARTIFICIAL FINE AGGREGATEJanuary 2025May 2025Allow410YesNo
19019920METHOD FOR IMPROVING DEFORMABILITY OF CEMENTITIOUS COMPOSITE BY USING POLYETHYLENE TEREPHTHALATE POWDERJanuary 2025April 2025Allow300NoNo
19016525PROCESS FOR PRODUCING LITHIUM SELECTIVE ADSORBENTS USING A STOICHIOMETRIC AMOUNT OF LITHIUMJanuary 2025February 2026Abandon1320YesNo
19008931METHOD FOR MOLECULAR SIEVE SHAPING BY USING RICE HUSK AS TEMPLATEJanuary 2025April 2025Allow300NoNo
19008700PROCESS METHOD FOR PREPARING MAGNESIUM OXIDE FROM DOLOMITEJanuary 2025May 2025Allow410NoNo
19001993POLISHING PASTE FOR SUPERFINISHING OF BEARING STEEL, AND PREPARATION METHOD AND USE THEREOFDecember 2024April 2025Allow300NoNo
19000732ORGANIC NITROGENOUS FERTILIZERS AND METHODS OF MAKING THE SAMEDecember 2024September 2025Allow911NoNo
18986968MOLECULES HAVING PESTICIDAL UTILITY, AND INTERMEDIATES, COMPOSITIONS, AND PROCESSES, RELATED THERETODecember 2024May 2025Allow510NoNo
18981628MARKER INKS AND METHODS OF PREPARING THE MARKER INKSDecember 2024August 2025Allow811NoNo
18981622MARKER INKS AND METHODS FOR PREPARING THEREOFDecember 2024September 2025Allow921NoNo
18977311FERRIC OXIDE NANOPARTICLES FOR WASTEWATER DISINFECTIONDecember 2024June 2025Allow611NoNo
18970921SOLID AMINE ADSORBENT AND ITS PREPARATION METHOD AND APPLICATIONDecember 2024September 2025Allow1020NoNo
18871525WATER-BASED INKJET INK AND PRINTED MATTERDecember 2024November 2025Allow1120YesNo
18967141METHOD FOR GENERATING HYDROGEN USING Bi2O3@SiO2 NANOCOMPOSITE CATALYSTDecember 2024March 2025Allow300NoNo
18966734PREPARATION METHOD OF COMPOSITE SLOW-RELEASE NANO-NITROGEN FERTILIZERDecember 2024February 2025Allow200NoNo
18870458SYSTEM FOR OPTIMIZING DURATION TIME OF HIGH-PRESSURE LEACHING OF LATERITE NICKEL ORENovember 2024June 2025Allow610NoNo
18957808METHOD FOR PRODUCING HYDROGEN USING COPPER OXIDE-MAGNESIUM ALUMINATE (CuO.MgAl2O4) SPINEL NANOCOMPOSITENovember 2024July 2025Allow811YesNo
18956674TAILORING NEW COVALENT ORGANIC FRAMEWORK FOR HIGHLY EFFICIENT IODINE CAPTURENovember 2024February 2025Allow200YesNo
18866272POWDER FOR ADDITIVE MANUFACTURINGNovember 2024December 2025Allow1311YesNo
18947381MINERAL BINDER COMPOSITION FOR 3D PRINTINGNovember 2024November 2025Allow1210YesNo
18948108Hydrophobic Concrete and AsphaltNovember 2024July 2025Allow811NoNo
18864672TITANIUM OXIDE POWDER AND METHOD FOR PRODUCING SAMENovember 2024June 2025Allow710NoNo
18940189METHOD FOR PRODUCING HYDROGEN FROM WOODY WASTE THROUGH STAGED PYROLYSIS AND CATALYTIC GASIFICATIONNovember 2024March 2025Allow510NoNo
18863072INORGANIC OXIDE PARTICLESNovember 2024January 2026Allow1420NoNo
18932132METHOD OF RECYCLING WASTE PAPER ASH AS CEMENT ALTERNATIVE IN CARBONATION-CURED CONCRETEOctober 2024October 2025Allow1220NoNo
18931388SYNTHESIS OF COBALT OXIDE NANOPARTICLES USING L-VALINE AS A FUELOctober 2024April 2025Allow510YesNo
18931219SYNTHESIS OF ZINC OXIDE NANOPARTICLES USING L-TRYPTOPHAN AS A FUELOctober 2024March 2025Allow510YesNo
18931608TUNGSTEN HEXAFLUORIDE PREPARATION METHOD AND APPARATUS BASED ON PHOTOELECTRIC SYNERGYOctober 2024March 2025Allow400NoNo
18919815CONCRETE COMPOSITION INCLUDING NANOSILICA DERIVED FROM GLASS WASTEOctober 2024March 2025Allow500NoNo
18920217SYSTEMS AND METHODS FOR STORING AND MINERALIZING CARBON DIOXIDE WITH LIMEOctober 2024July 2025Allow910NoNo
18909313CARBON NEGATIVE CEMENTITIOUS COMPOSITION AND BUILDING MATERIALSOctober 2024September 2025Allow1120NoNo
18903069Concrete Masonry Unit Composition for Automated Block MachinesOctober 2024June 2025Allow811NoNo
18850146ADSORPTION FILTERSeptember 2024June 2025Allow910YesNo
18894204HIGH-PERFORMANCE SODIUM ION ELECTROLYTES AND EFFICIENT METHODS FOR MAKING THE SAMESeptember 2024March 2025Allow620NoNo
18891261METHOD FOR PREPARING AMORPHOUS HIERARCHICALLY POROUS UiO-66September 2024May 2025Allow800NoNo
18888637CERAMIC SUSCEPTOR AND MANUFACTURING METHOD THEREOFSeptember 2024May 2025Allow811NoNo
18828783LIME-BASED CEMENT EXTENDER COMPOSITIONS, AND ASSOCIATED SYSTEMS AND METHODSSeptember 2024May 2025Allow820YesNo
18813445PRODUCT HAVING ULTRAVIOLET RADIATION PROTECTIONAugust 2024March 2026Allow1931YesNo
18812169METHOD AND APPARATUS FOR MAKING CARBON NANOMATERIALS AND METHODS USING LOW-LITHIUM ELECTROLYTESAugust 2024September 2025Allow1321NoNo
18837926NEGATIVE THERMAL EXPANSION MATERIAL, METHOD FOR PRODUCING THE SAME, AND COMPOSITE MATERIALAugust 2024February 2025Allow700NoNo
18799957DEVICE AND METHOD FOR RECOVERING ARSENIC AND GALLIUMAugust 2024March 2025Allow710NoNo
18835990METHOD FOR SYNTHESIZING SiO2Al2O3 CONTAINING SOL SOLUTION AND METHOD FOR FORMING POROUS ALUMINA FILMAugust 2024February 2025Allow701YesNo
18784599HIGH THERMAL COEFFICIENT GROUT COMPOSITIONS AND METHODS THEREFORJuly 2024February 2025Allow711YesNo
18779617FERRIC OXIDE SYNTHESIS METHODJuly 2024September 2024Allow200YesNo
18779745AUTOCLAVE METHOD FOR MAKING FERRIC OXIDEJuly 2024January 2025Allow610NoNo
18779846METHOD FOR FORMING FERRIC OXIDE MICROPARTICLESJuly 2024September 2024Allow200YesNo
18730632GLASS FIBERSJuly 2024February 2025Allow710YesNo
18730539GLASS FIBERSJuly 2024July 2025Allow1110NoNo
18777753LIGHTWEIGHT SOLID WASTE POROUS AGGREGATE, AND PREPARATION METHOD AND USE THEREOFJuly 2024January 2025Allow610NoNo
18776876WIRE MESH CONCRETE REINFORCEMENT MEMBERS AND METHODS OF USE THEREOFJuly 2024December 2024Allow501NoNo
18774468EV-GRADE HIGH-PURITY LITHIUM SULFIDE AND PREPARATION METHOD FOR THE SAMEJuly 2024April 2025Allow911NoNo
18771047Methods for the Purification of Molybdenum-99 with Phase Transfer AgentsJuly 2024July 2025Allow1211YesNo
18765282LIME AND HYDRAULIC CEMENT MANUFACTURE USING, HYALOCLASTITE OR LAVA, AND METHOD OF MAKING AND USING SAMEJuly 2024August 2024Allow210NoNo
18758467PROCESS FOR REMOVING HYDROGEN SULFIDE FROM SOUR GASES WITH A LAYERED TRIPLE HYDROXIDE ZIF-67 COMPOSITEJune 2024September 2024Allow200YesNo
18724869ORGANIC-INORGANIC COMPOSITE THERMAL INSULATION MEDIUM AND PREPARATION METHOD THEREOFJune 2024February 2026Allow2000NoNo
18748480CUBIC BORON NITRIDE POLYCRYSTALLITE AND METHOD FOR PRODUCING THE SAMEJune 2024February 2025Allow811YesNo
18720794DIFFRACTIVE EFFECT PIGMENTS HAVING A REFLECTIVE CORE AND SEMICONDUCTOR COATINGSJune 2024December 2025Abandon1821NoNo
18741901SELF-HEALING CERAMIC MATERIAL WITH REDUCED POROSITY AND METHOD FOR PREPARING THE SAMEJune 2024September 2024Allow2701NoNo
18740385LITHIUM SILICATE MATERIALSJune 2024July 2025Abandon1310NoNo
18718161METHOD FOR MANUFACTURING A PART OF SIC/SIC COMPOSITE MATERIALJune 2024October 2025Allow1621YesNo
18738352GAS CAPTURE USING POLYMERIC PARTICLESJune 2024June 2025Allow1211NoNo
18737977PORTLAND CEMENT CLINKER MANUFACTURE USING HYALOCLASTITE OR LAVA AND METHOD OF MAKING AND USING SAMEJune 2024August 2024Allow210NoNo
18714586CEMENTED CARBIDEMay 2024July 2025Allow1330YesNo
18676521PREPARATION METHOD FOR NANOCOMPOSITE FIBER MEMBRANE MATERIAL BASED ON BIO-BASED LIQUEFIED FORMALDEHYDE RESINMay 2024September 2024Allow300NoNo
18677009LIME-BASED CEMENT EXTENDER COMPOSITIONS, AND ASSOCIATED SYSTEMS AND METHODSMay 2024February 2025Allow900NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for art-unit 1731.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
300
Examiner Affirmed
199
(66.3%)
Examiner Reversed
101
(33.7%)
Reversal Percentile
56.7%
Higher than average

What This Means

With a 33.7% reversal rate, the PTAB reverses the examiner's rejections in a meaningful percentage of cases. This reversal rate is above the USPTO average, indicating that appeals have better success here than typical.

Strategic Value of Filing an Appeal

Total Appeal Filings
936
Allowed After Appeal Filing
290
(31.0%)
Not Allowed After Appeal Filing
646
(69.0%)
Filing Benefit Percentile
43.5%
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, 31.0% 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 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 shows limited benefit. Consider other strategies like interviews or amendments before appealing.

Art Unit 1731 - Prosecution Statistics Summary

Executive Summary

Art Unit 1731 is part of Group 1730 in Technology Center 1700. This art unit has examined 15,172 patent applications in our dataset, with an overall allowance rate of 71.4%. Applications typically reach final disposition in approximately 29 months.

Comparative Analysis

Art Unit 1731's allowance rate of 71.4% places it in the 35% 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 1731 receive an average of 1.83 office actions before reaching final disposition (in the 45% percentile). The median prosecution time is 29 months (in the 58% 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.