USPTO Art Unit 1738 Prosecution Statistics

Art Unit Information

Art Unit: 1738
Group: 1730
Tech Center: 1700
Total Cases: 2,186
Last Active: July 2025

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19284273ALKALI HYDROXIDE PRODUCTION FROM ALKALI SULFATE WITH HALOGEN OR CARBOXYLIC ACID INTERMEDIATESJuly 2025January 2026Allow601NoNo
19276778APPARATUSES AND METHODS FOR PRODUCING NANOPARTICLES FROM MATERIAL IN WORKING LIQUIDJuly 2025December 2025Allow500NoNo
19267452HYDRAULIC ACTUATOR SHELL AND PREPARATION METHODJuly 2025August 2025Allow200NoNo
19259953METHOD FOR DESIGNING AND PREPARING SILICON-BASED HIGH- ENTROPY ALLOYS BY USING PHOTOVOLTAIC SILICON WASTE THROUGH COMPENSATION METHODJuly 2025November 2025Allow520YesNo
19256982COPPER HYDROXIDE NITRATE/CALCIUM SILICATE/GRAPHITIC CARBON NITRIDE NANOCOMPOSITE MATERIAL BASED ABSORBENT FOR WASTEWATER TREATMENTJuly 2025October 2025Allow410YesNo
19236318METHOD OF PRODUCING HYDROGEN FROM AMMONIAJune 2025October 2025Allow410YesNo
19230001RARE EARTH MAGNESIUM ALLOY BASED ON HIGH-TEMPERATURE AND HIGH-PRESSURE HYDROGENATION AND PREPARATION METHODJune 2025October 2025Allow411NoNo
19221146LANTHANUM HYDROXIDE /LANTHANUM OXIDE/CALCIUM SILICATE/GRAPHITIC CARBON NITRIDE PARTICULATE CRYSTALLINE NANOCOMPOSITEMay 2025August 2025Allow301NoNo
19219703PROCESS AND CIRCUIT FOR DIRECT LITHIUM EXTRACTIONMay 2025December 2025Allow611NoNo
19216531NANOCOMPOSITE FOR WASTEWATER TREATMENTMay 2025July 2025Allow200NoNo
19215411PREPARATION METHOD OF Co@CM MULTI-CHANNEL CERAMIC CATALYTIC MEMBRANE FOR HYDROGENATION OF p-NITROPHENOLMay 2025September 2025Allow401YesNo
19214668HYDROGEN GENERATION METHOD USING SODIUM BOROHYDRIDEMay 2025July 2025Allow200NoNo
19211915MULTIPHASE NANOCOMPOSITE MATERIALMay 2025October 2025Allow501NoNo
19202663FUNCTIONALIZED SILICA NANOPARTICLES FOR LEAD ADSORPTIONMay 2025December 2025Allow720NoNo
19202569FUNCTIONALIZED SILICA NANOPARTICLES FOR LEAD ADSORPTIONMay 2025October 2025Allow510YesNo
19192745Aerogel CompositeApril 2025October 2025Allow610YesNo
19192080ANISOTROPIC NANOCRYSTALLINE RARE EARTH PERMANENT MAGNETApril 2025October 2025Allow610NoNo
19118357CEMENTED CARBIDE AND CUTTING TOOLApril 2025June 2025Allow200NoNo
19073994PARTICULATE NANOCOMPOSITE MATERIALMarch 2025June 2025Allow301NoNo
19063744METHOD FOR PRODUCING SPHERICAL SILICA PARTICLESFebruary 2025August 2025Allow610NoNo
19062693SYSTEMS AND METHODS FOR IMPROVED CARBON CAPTURE ASSOCIATED WITH MOLTEN METAL PRODUCTIONFebruary 2025July 2025Allow510NoNo
19100942CEMENTED CARBIDE AND CUTTING TOOLFebruary 2025June 2025Allow500YesNo
19100438PLATED STEEL SHEETJanuary 2025January 2026Allow1110NoNo
19035434ALKALI HYDROXIDE PRODUCTION FROM ALKALI SULFATE WITH HALOGEN OR CARBOXYLIC ACID INTERMEDIATESJanuary 2025April 2025Allow301YesNo
18996648HOLDING TOOLS FOR PREFORM SINTERINGJanuary 2025August 2025Allow701NoNo
19020412METAL ORGANIC FRAMEWORK DERIVED NANOCOMPOSITE CATALYST FOR SYNTHESIS GAS PRODUCTIONJanuary 2025August 2025Allow711YesNo
19017102SYNTHESIS OF NANOSIZED CUBIC LITHIUM LANTHANUM ZIRCONATE FAST ION CONDUCTORJanuary 2025March 2025Allow200NoNo
19008716SPHERICAL MEDICAL TANTALUM ALLOY POWDER, PREPARATION METHOD THEREFOR AND USE THEREOFJanuary 2025July 2025Allow610YesNo
18880340ALUMINUM ALLOY SHEET FOR CAN LIDDecember 2024March 2025Allow300NoNo
18879352METHOD FOR SEPARATING AND PURIFYING PHOSPHORIC ACID AND PHOSPHOGYPSUM FROM WET-PROCESS PHOSPHORIC ACID SLURRY, AND PHOSPHORIC ACID AND PHOSPHOGYPSUM PREPARED THEREBYDecember 2024August 2025Allow810YesNo
18878748CUBIC BORON NITRIDE SINTERED MATERIAL AND TOOLDecember 2024December 2025Allow1220YesNo
18991308FIBER-REINFORCED DOUBLE-NETWORK AEROGEL COMPOSITE ARTICLES AND METHODS OF MANUFACTUREDecember 2024September 2025Allow911YesNo
18987296Aerogel CompositeDecember 2024July 2025Allow610YesNo
18976912ZINC-VANADIUM CATALYST FOR HYDROGEN GENERATIONDecember 2024March 2025Allow300NoNo
18968864NANOCOMPOSITE MATERIAL FOR ENERGY STORAGE DEVICESDecember 2024April 2025Allow410NoNo
18966034CORROSION-RESISTANT SN-AG-CU SERIES LEAD-FREE SOLDER ALLOYDecember 2024November 2025Allow1120YesNo
18964451COMPOSITE FORMING METHOD AND DEVICE COMBINING ELECTRIC PULSE CREEP AGING WITH LASER PEENINGDecember 2024November 2025Allow1111NoNo
18870419TREATMENT METHOD FOR LATERITE NICKEL ORE BY CURING AND ROASTING-WATER LEACHING-ATMOSPHERIC PRESSURE ACID LEACHINGNovember 2024July 2025Allow810NoNo
18870437METHOD FOR GREEN AND LOW-COST EXTRACTION OF NICKEL-COBALT FROM LATERITE NICKEL ORENovember 2024July 2025Allow810NoNo
18957760High-Efficiency Method for Converting Limestone to Slaked LimeNovember 2024January 2025Allow100YesNo
18867447PREPARATION METHOD OF HIGH-SENSITIVITY TERAHERTZ SENSORNovember 2024January 2026Allow1400NoNo
18943572COARSE GRAIN CEMENTED CARBIDE AND PREPARATION METHOD THEREOFNovember 2024August 2025Allow911YesNo
18943268PROCESS FOR PRODUCING RUTHENIUM COMPLEXES AND INTERMEDIATES THEREOF AND THEIR USE IN OLEFIN METATHESISNovember 2024August 2025Allow911YesNo
18940787SIX-MEMBERED HIGH-ENTROPY FOAMS FOR HYDROGEN PRODUCTION BY WATER SPLITTING AND PREPARATION METHODS THEREOFNovember 2024July 2025Allow811NoNo
18915343EFFICIENT AGING METHODS FOR ALUMINUM-LITHIUM ALLOYS BASED ON DYNAMIC STRAIN PRECIPITATIONOctober 2024August 2025Allow1100NoNo
18910554APPARATUSES AND METHODS FOR PRODUCING NANOPARTICLES FROM MATERIAL IN WORKING LIQUIDOctober 2024April 2025Allow601NoNo
18910711ACID TREATMENT METHOD FOR MAKING ORGANOSELENIUM COMPOSITEOctober 2024December 2024Allow200YesNo
18910597SILICA-BASED PARTICLE WITH HYDROXY-TERMINATED PEG BONDING AND METHOXY-TERMINATED PEG SURFACE MODIFICATIONOctober 2024October 2025Allow1200YesNo
18904671ALUMINUM NITRIDE-REINFORCED ALUMINUM MATRIX COMPOSITE (AMC) AND PREPARATION METHOD THEREOFOctober 2024November 2024Allow200NoNo
18901033ELECTRICAL STEEL WITH LOW IRON LOSS AND METHOD FOR CONTROLLING TENSION THEREOF DURING DECARBURIZATION ANNEALINGSeptember 2024May 2025Allow720NoNo
18882465USE OF RESIDUAL IRON WITHIN GRANULATED METALLIC UNIT PRODUCTION FACILITIES, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODSSeptember 2024July 2025Allow1011YesNo
18844987CEMENTED CARBIDE AND CUTTING TOOL USING THE SAMESeptember 2024May 2025Allow810YesNo
18810622METAL ORGANIC FRAMEWORK DERIVED NANOCOMPOSITE CATALYST FOR SYNTHESIS GAS PRODUCTIONAugust 2024December 2024Allow401YesNo
18808326Void Reducing Asphalt Membrane EmulsionAugust 2024February 2026Allow1811NoNo
18838141METHOD AND SYSTEM FOR RECYCLING WASTE MINERALSAugust 2024May 2025Allow910NoNo
18796375METHOD OF TREATING PALM WASTE TO FORM ORGANOSELENIUM NANOCOMPOSITEAugust 2024September 2024Allow200YesNo
18791611TARNISH RESISTANT AND AGE HARDENABLE STERLING SILVER ALLOYAugust 2024October 2024Allow310NoNo
18787079RED MUD-BASED COMPOSITE ASPHALT ANTI-AGING AGENT, AND PREPARATION METHOD THEREFOR AND USE THEREOFJuly 2024October 2024Allow200NoNo
18782577TUNING THE MAGNETIC BEHAVIOR OF SOFT MAGNETIC NANOWIRESJuly 2024April 2025Abandon910NoNo
18774072CYCLIC SUPPORTED CATALYSTSJuly 2024February 2026Abandon1920YesNo
18752725METHOD OF PREPARING IODOSILANES AND COMPOSITIONS THEREFROMJune 2024July 2025Allow1310NoNo
18748188HOT PRESS MOLDING METHOD FOR INDUCTORJune 2024September 2024Allow300NoNo
18746132HYDROGEN PRODUCTION BY RED MUD-SUPPORTED NICKEL-BASED CATALYSTS AND METHODS OF PREPARATION THEREOFJune 2024August 2024Allow210NoNo
18746179ALUMINIUM-TITANIUM-NIOBIUM-BORON INTERMEDIATE ALLOY AND PREPARATION METHOD AND APPLICATION THEREOFJune 2024September 2025Abandon1521NoNo
18721567ANISOTROPIC NANOCRYSTALLINE RARE EARTH PERMANENT MAGNET AND PREPARATION METHOD THEREOFJune 2024May 2025Allow1111YesNo
18720697PROCESS FOR PREPARING A HIGH-PURITY NICKEL SULPHATE SOLUTIONJune 2024November 2025Allow1730YesNo
18741542CATALYST FOR HYDROGENATION REACTION AND METHOD FOR MANUFACTURING THE SAMEJune 2024September 2025Allow1521YesNo
18740588LOW-ALLOYED MAGNESIUM ALLOY WITH HIGH DUCTILITY AND HIGH DAMPING CAPACITIES AT ROOM TEMPERATURE AND PREPARATION METHOD THEREOFJune 2024March 2026Allow2111NoNo
18733253COLLOIDAL SILICA AND METHOD FOR PRODUCING SAMEJune 2024September 2025Allow1610NoNo
18714829CEMENTED CARBIDE AND CUTTING TOOLMay 2024June 2025Allow1330YesNo
18714097CEMENTED CARBIDEMay 2024January 2025Allow710YesNo
18670631METHOD FOR CONTROLLING NITROGEN IN STEELMAKING BY SPRAYING HYDROGEN CONTAINING PLASMAMay 2024November 2024Allow610NoNo
18670093FUNCTIONALIZED SILICA NANOPARTICLES FOR LEAD ADSORPTIONMay 2024April 2025Allow1112NoNo
18711674HOT-ROLLED STEEL SHEETMay 2024January 2026Allow2020YesNo
18666451CARBON SORBENT FORMULATIONS FOR CARBON DIOXIDE ADSORPTION, AND RELATED METHODSMay 2024June 2025Allow1311NoNo
18664969PRE-SINTERED PREFORM BRAZE REINFORCEMENT OF PRESSURE VESSELSMay 2024June 2025Allow1310YesNo
18665116CATALYST FOR HYDROGENATION REACTION AND METHOD FOR PRODUCING SAMEMay 2024September 2025Allow1620YesNo
18665066METHOD OF PRODUCING ORGANOSELENIUM-BASED NANOCOMPOSITEMay 2024July 2024Allow200YesNo
18661231METHODS AND SYSTEMS FOR LEACHING A METAL-BEARING MATERIALMay 2024January 2026Allow2011NoNo
18653018METHOD FOR ENRICHING CARBON DIOXIDE AND HYDROGEN BY WATER-GAS SHIFT COUPLING OF BLAST FURNACE GASMay 2024October 2024Allow510NoNo
18650375SORBENT FOR LITHIUM EXTRACTION FROM BRINESApril 2024March 2026Allow2341YesYes
18646141SiC EPITAXIAL WAFER AND METHOD FOR MANUFACTURING SIC EPITAXIAL WAFERApril 2024March 2025Allow1110NoNo
18704911HIGH-STRENGTH AND TOUGH MULTI-COMPONENT SOFT MAGNETIC ALLOY AND PREPARATION METHOD THEREOFApril 2024January 2025Allow811NoNo
18644735PREPARATION OF LITHIUM CARBONATE AND LITHIUM HYDROXIDEApril 2024December 2025Abandon2030NoNo
18703998PLATED STEEL SHEETApril 2024August 2024Allow400NoNo
18642187Chemical Looping Carrier Compositions, Binders, and Related MethodsApril 2024February 2025Allow900NoNo
18640307ORGANOMETALLIC COMPLEX, OLEFIN POLYMERIZATION CATALYST SYSTEM AND POLYMERIZATION PROCESSApril 2024January 2025Allow901NoNo
18638003ZINC ALUMINUM SILICATE/GRANULAR RED MUD COMPOSITE MATERIAL OF ZN2+-MODIFIED INDUSTRIAL WASTE RED MUD, PREPARATION METHOD AND APPLICATION THEREOFApril 2024December 2024Allow810NoNo
18629509METHOD OF PURIFYING CRUDE LITHIUM BIS(FLUOROSULFONYL)IMIDEApril 2024July 2024Allow300NoNo
18628434THREE-DIMENSIONAL PRINTINGApril 2024February 2025Allow1001NoNo
18697688LOW COMPRESSION SET AEROGELS AND AEROGEL COMPOSITES AND METHODS OF MAKINGApril 2024August 2024Allow410YesNo
18616562METHOD FOR HEAT TREATING AN OBJECT CONTAINING AT LEAST ONE RARE-EARTH ELEMENT WITH A HIGH VAPOR PRESSUREMarch 2024February 2025Allow1000NoNo
18615407METHOD IN A PRESSING ARRANGEMENTMarch 2024August 2025Allow1610NoNo
18607097MAGNETIC-NANOPARTICLE-SUPPORTED CATALYST AND METHOD OF MAKINGMarch 2024July 2024Allow410YesNo
18607019SONICATION METHOD FOR MAKING MAGNETIC SUPPORTED CATALYSTSMarch 2024July 2024Allow410YesNo
18607139METHOD FOR MAKING Fe3O4 MAGNETIC CATALYSTSMarch 2024July 2024Allow410YesNo
18599283ENERGY-EFFICIENT PRODUCTION OF A FERRITIC HOT-ROLLED STRIP IN AN INTEGRATED CASTING-ROLLING PLANTMarch 2024November 2025Allow2120YesNo
18598658LASER ARRAY FOR LASER POWDER BED FUSION PROCESSING OF METAL ALLOYSMarch 2024February 2025Allow1100NoNo
18597168REMOTE LASER DESENSITIZATION SYSTEMS AND METHODS FOR DESENSITIZING ALUMINUM AND OTHER METAL ALLOYSMarch 2024December 2025Allow2210NoNo
18595187METHOD FOR MANUFACTURING SILICA SOLMarch 2024January 2026Allow2210NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for art-unit 1738.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
50
Examiner Affirmed
31
(62.0%)
Examiner Reversed
19
(38.0%)
Reversal Percentile
74.5%
Higher than average

What This Means

With a 38.0% 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
123
Allowed After Appeal Filing
38
(30.9%)
Not Allowed After Appeal Filing
85
(69.1%)
Filing Benefit Percentile
43.0%
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, 30.9% 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 1738 - Prosecution Statistics Summary

Executive Summary

Art Unit 1738 is part of Group 1730 in Technology Center 1700. This art unit has examined 2,186 patent applications in our dataset, with an overall allowance rate of 72.4%. Applications typically reach final disposition in approximately 38 months.

Comparative Analysis

Art Unit 1738's allowance rate of 72.4% places it in the 37% 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 1738 receive an average of 2.15 office actions before reaching final disposition (in the 70% percentile). The median prosecution time is 38 months (in the 19% 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.