USPTO Art Unit 1779 Prosecution Statistics

Art Unit Information

Art Unit: 1779
Group: 1770
Tech Center: 1700
Total Cases: 6,382
Last Active: March 2025

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19070645WATER SURFACE AUTOMATIC CLEANING APPARATUSMarch 2025June 2025Allow410YesNo
19048586NANOCOMPOSITE FOR PURIFICATION OF CONTAMINATED WATERFebruary 2025March 2025Allow100NoNo
19039812METHOD FOR PURIFYING POLLUTED WATERJanuary 2025March 2025Allow210NoNo
19038819ULTRASONIC DEVICES AND METHODS FOR REGENERATION OF ACTIVATED CARBONJanuary 2025May 2025Allow400YesNo
19030102FILTER-HOUSING INTERFACE DESIGNS FOR HEATING, VENTILATION, AND/OR AIR CONDITIONING SYSTEMSJanuary 2025June 2025Allow511YesNo
19025208DENITRIFICATION AND DEPHOSPHORIZATION COMPOSITE FILLER, PREPARATION METHOD AND APPLICATIONJanuary 2025June 2025Allow510NoNo
19022300GRAPHENE ELECTROSTATIC FILTERING DEVICEJanuary 2025April 2025Allow300NoNo
19019656WATER TREATMENT MATERIAL, PREPARATION, AND USE FOR ELECTRICALLY ENHANCED ADSORPTIVE FILTRATIONJanuary 2025May 2025Allow410YesNo
19001707COF@HYDROMAGNESITE COMPOSITE MATERIAL AND PREPARATION METHOD AND APPLLICATION THEREOFDecember 2024March 2025Allow200NoNo
18967050METHOD OF PURIFICATION AND PURIFIED PRODUCTSDecember 2024March 2025Allow410YesNo
18966274GEOPOLYMER COMPOSITE FOR WATER DECONTAMINATIONDecember 2024February 2025Allow310NoNo
18870485Wastewater Treatment System, Construction Method for Wastewater Treatment System, and Wastewater Treatment CylinderNovember 2024April 2025Allow510YesNo
18870444WASTEWATER TREATMENT PROCESS IN PRODUCTION OF NICKEL COBALT HYDROXIDENovember 2024June 2025Allow710YesNo
18957121VORTICAL CROSS-FLOW FILTRATION SYSTEMNovember 2024May 2025Allow520YesNo
18954346METAL OXIDE-BASED NANOCOMPOSITE MATERIAL FOR WATER DECONTAMINATIONNovember 2024February 2025Allow200NoNo
18934939SULFER-DOPED SILVER TUNGSTATE (AG2WO4) NANOPARTICLES FOR WATER DECONTAMINATIONNovember 2024January 2025Allow210NoNo
18934248Self Contained Modular Decentralized Point of Use Fluid Treatment System ApparatusNovember 2024February 2025Allow300YesNo
18923553Low-carbon near zero emission process of industrial waste waterOctober 2024May 2025Allow720YesNo
18900597Systems, Methods, Apparatuses, and Devices for Cleaning an Open BodySeptember 2024February 2025Allow510NoNo
18894511HIGH-LOAD ORGANIC WASTEWATER DARK FERMENTATION BIOHYDROGEN PRODUCTION DEVICE AND HYDROGEN PRODUCTION METHODSeptember 2024June 2025Allow900NoNo
18889673METHOD FOR PROMOTING ANAEROBIC DIGESTION USING CARBONYL IRONSeptember 2024January 2025Allow410NoNo
18884219METHOD FOR TREATING ELECTROPLATING WASTEWATERSeptember 2024February 2025Allow510NoNo
18882384TREATING COOLING WATER IN IRON PRODUCTION FACILITIES, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODSSeptember 2024March 2025Allow610YesNo
18842719BUBBLE GENERATION DEVICE AND LIQUID FILTRATION DEVICEAugust 2024May 2025Allow910YesNo
18794594WATER RECLAMATION SYSTEMAugust 2024November 2024Allow300YesNo
18782080WATER AERATION AND TREATMENT METHODJuly 2024September 2024Allow200NoNo
18780567PHOSPHONIC HYDROGEL SYNTHESIS METHODJuly 2024September 2024Allow210NoNo
18776678SYNERGISTIC GREEN SORPTION MEDIA FOR CYANOBACTERIAL TOXIN REMEDIATIONJuly 2024April 2025Allow920YesNo
18776196MECHANO-CHEMICAL WASTEWATER TREATMENT EQUIPMENTJuly 2024December 2024Allow510YesNo
18771104Methods and Systems of PFAS Destruction using UV Irradiation at 222 NanometersJuly 2024January 2025Allow610NoNo
18761058PUMP-BASED SYSTEM FOR WASTEWATER TREATMENT THROUGH MICROORGANISM BIOCHEMICAL PATHWAY OPTIMIZATIONJuly 2024May 2025Allow1000YesNo
18761026METHODS FOR PRODUCING A HIGH PROTEIN CORN MEAL FROM A WHOLE STILLAGE BYPRODUCT AND SYSTEM THEREFOREJuly 2024February 2025Allow800NoNo
18756900ANIMAL HUSBANDRY NUTRIENT AND ODOR MANAGEMENT SYSTEMJune 2024February 2025Allow820NoNo
18752136PORTABLE WATER PUMP USED IN A POOLJune 2024January 2025Allow610NoNo
18745806Zero-Emissions Refinery System and Method for Liquid Waste Stream Recovery of Clean Water and Valuable By-ProductsJune 2024November 2024Allow510NoNo
18740954METHOD AND APPARATUS FOR TREATING WASTEWATERJune 2024February 2025Allow810NoNo
18738943PASSIVE GRAVITY FILTER CELL TO REDUCE VELOCITY AND METHODS OF USE THEREOFJune 2024June 2025Allow1210YesNo
18733953METHOD FOR STABILIZING HEAVY METAL AND ANTIBIOTIC BY COUPLING SLOW MINERALIZATION OF CALCIUM PHOSPHATE LIQUID PRECURSOR WITH CONTINUOUS FLOWJune 2024March 2025Allow1010YesNo
18674615SYSTEM AND METHOD FOR EXTRACTING BORON FROM FEED WATERMay 2024February 2025Allow820NoNo
18673935HYDROPONIC WATER TREATMENT SYSTEMMay 2024September 2024Allow410NoNo
18669020PREPARATION METHOD FOR MODIFIED CATHODE OF MEC-AD SYSTEM AND APPLICATION OF SYSTEM WITH HIGH EFFICIENCY AND LOW ENERGY CONSUMPTIONMay 2024July 2024Allow200NoNo
18663395USE OF BASALT FIBER TO ADSORB TOXIC MATERIALMay 2024May 2025Allow1210YesNo
18653702COMPOSITE HOLLOW FIBER AND RELATED METHODS AND PRODUCTSMay 2024May 2025Allow1220YesNo
18640208FILTRATION DEVICE WITH ION DISPERSING MATERIALApril 2024March 2025Allow1000NoNo
18635847FLUID DECONTAMINATION APPARATUSApril 2024March 2025Allow1110NoNo
18628119TREATMENT OF AQUEOUS COMPOSITION WITH METAL COMPONENTApril 2024July 2024Allow300YesNo
18624536Apparatus, Systems And Methods For Storing, Treating And/Or Processing Blood And Blood ComponentsApril 2024August 2024Allow500NoNo
18618613MIXER FOR ION EXCHANGE WATER SOFTENERMarch 2024February 2025Allow1030YesNo
18610988Centralized Wastewater Treatment Method and SystemMarch 2024December 2024Allow930NoNo
18599270METHOD FOR PURIFYING WATER WITH REGENERATIVE ADSORBENTMarch 2024July 2024Allow410NoNo
18592597GAS SEPARATION APPARATUS and METHOD OF GAS SEPARATIONMarch 2024June 2025Allow1500NoNo
18593360SCALABLE FLOATING MICRO-AERATION UNIT, DEVICES AND METHODSMarch 2024May 2025Allow1420YesNo
18590948FILTER MEDIA RIBBONS WITH NANOFIBERS FORMED THEREONFebruary 2024April 2025Abandon1310NoNo
18583836BLOOD TREATMENT SYSTEMS AND METHODSFebruary 2024October 2024Allow800NoNo
18444801TREATMENT OF WASTEWATER BY AEROBIC GRANULAR BIOMASS IN CONTINUOUS FLOWFebruary 2024July 2024Allow520NoNo
18425489REMOVAL OF ARSENIC BY LOOFAH SPONGE ENRICHED WITH STEAM ACTIVATED BIOCHARJanuary 2024October 2024Allow910NoNo
18419423Gravity Water FilterJanuary 2024March 2025Allow1410YesNo
18416844PROCESS OF PURIFICATION OF PROTEINJanuary 2024June 2024Allow500NoNo
18416846PROCESS OF PURIFICATION OF PROTEINJanuary 2024March 2025Allow1421NoNo
18403186METHOD FOR REMOVAL OF HUMIC ACID FROM WATERJanuary 2024May 2025Abandon1620NoNo
18395312PROCESSING APPARATUS FOR TREATING ACID MINE WASTEWATER USING ACTIVATED CARBON-LOADED MICROORGANISMDecember 2023July 2024Allow600NoNo
18542669DESALINATION PLANTDecember 2023June 2024Allow600YesNo
18532756METHODS AND SYSTEMS FOR TREATING WASTEWATERDecember 2023June 2025Abandon1820NoNo
18528061ACOUSTIC SEPARATION OF PARTICLES FOR BIOPROCESSINGDecember 2023March 2025Allow1510YesNo
18521289CONTAMINANT REMOVAL BY ZERO-VALENT IRON-BASED GREEN SORPTION MEDIANovember 2023February 2024Allow210NoNo
18517332SYSTEM AND METHOD FOR RECOVERING NUTRIENTS FROM A HIGH NITROGENOUS LIQUID WASTENovember 2023October 2024Allow1020NoNo
18517310SYSTEM AND METHOD FOR RECOVERING NUTRIENTS FROM A HIGH NITROGENOUS LIQUID WASTENovember 2023July 2024Allow811NoNo
18511968PREPARATION METHOD AND APPLICATION OF CLAY/TANNIC ACID/METAL ION COMPOSITE MATERIAL FOR EFFICIENT ADSORPTION OF ANTIBIOTICSNovember 2023April 2024Allow510NoNo
18505902Ozone Injector DeviceNovember 2023September 2024Allow1000YesNo
18502769OIL FILTER CARTRIDGENovember 2023September 2024Allow1121NoNo
18386213PROCESSES FOR THE REMOVAL AND RECOVERY OF CADMIUM FROM WET-PROCESS PHOSPHORIC ACIDNovember 2023June 2024Allow710YesNo
18385519SURFACE WATER BIOSOURCE AUGMENTATION PRODUCTION AND DISTRIBUTION SYSTEMOctober 2023April 2025Allow1720NoNo
18495011VALVE MANIFOLD FOR A WATER PURIFICATION SYSTEMOctober 2023February 2025Allow1611NoNo
18492209ACTIVATED HEMP FILTERS AND METHOD OF MAKING ACTIVATED HEMP FILTERSOctober 2023January 2025Allow1510NoNo
18380763SYNTHESIS OF AMINO-RICH MESOPOROUS SILICA NANOPARTICLES FOR REMOVAL OF HEAVY METAL AND URANIUM CATIONSOctober 2023April 2024Allow610NoNo
18287034METHOD FOR DEODORIZING SLUDGE WITH METAL SALT AND TANNIN EXTRACT TOGETHER, DEODORIZED SLUDGE, AND USE THEREOFOctober 2023February 2024Allow410YesNo
18380360CONTAINER FOR FLUIDS AND APPARATUS FOR TEMPERATURE CONTROL, E.G. WARMING, OF MEDICAL FLUIDSOctober 2023January 2025Allow1520YesNo
18486931USE OF A BY-PRODUCT OF CHLORELLA ELLIPSOIDEA BIODIESEL PRODUCTION FOR AQUACULTURE DISCHARGE TREATMENTOctober 2023March 2024Allow510NoNo
18379374ADSORBENT USING BIOWASTE AND PLASTIC WASTE FOR WASTEWATER TREATMENTOctober 2023December 2023Allow200NoNo
18379478NONWOVEN FILTRATION MEDIA INCLUDING MICROFIBRILLATED CELLULOSE FIBERSOctober 2023June 2025Allow2010NoNo
18378297ACTIVATED CARBON COMPOSITE FLAKES USING OLIVE STONE- POLYETHYLENE WASTEOctober 2023December 2023Allow300NoNo
18378132RETURN LINE IN-TANK FILTER ASSEMBLY WITH DISPOSABLE FILTER ELEMENTOctober 2023September 2024Allow1100YesNo
18374771SELF-ASSISTING ELEMENT REMOVAL FEATURES FOR A FILTRATION SYSTEMSeptember 2023February 2025Allow1710NoNo
18284471REFLUX UNIT AND SEWAGE TREATMENT SYSTEMSeptember 2023September 2024Allow1110NoNo
18372473WATER PURIFICATION APPARATUS AND METHODS FOR CLEANING THE WATER PURIFICATION APPARATUSSeptember 2023June 2024Allow900YesNo
18470448CAPSULE TYPE BIDET FILTERSeptember 2023December 2024Abandon1420NoNo
18369977Method and System for Removing Hydrogen Sulfide from Sour Oil and Sour WaterSeptember 2023July 2024Allow1010NoNo
18369449PRIMING TRAY FOR PRIMING A FLUID SYSTEMSeptember 2023December 2024Allow1520NoNo
18467812SOIL AND WATER REMEDIATION METHOD AND APPARATUS FOR TREATMENT OF RECALCITRANT HALOGENATED SUBSTANCESSeptember 2023January 2024Allow400YesNo
18367766MICROPORE ULTRASONIC DISINTEGRATION DEVICE FOR SLUDGE CELL DISINTEGRATIONSeptember 2023March 2024Allow600NoNo
18367348Process for Decontamination of Hazardous Sulfur Compounds in Sour Water TanksSeptember 2023September 2024Allow1210NoNo
18241272WATER TREATMENT FOR REMOVING PFASSeptember 2023January 2025Allow1710NoNo
18239405INTRADIALYTIC USE OF SODIUM THIOSULFATEAugust 2023April 2025Allow1910NoNo
18238084SPA FILTRATION SYSTEM AND METHODAugust 2023April 2025Allow2021YesNo
18446323BLOOD TREATMENT SYSTEMS AND METHODSAugust 2023May 2024Abandon1010NoNo
18230040THERAPEUTIC COMPOSITIONS FOR VIRAL-ASSOCIATED DISEASE STATES AND METHODS OF MAKING AND USING SAMEAugust 2023May 2025Allow2110YesNo
18229089METHODS AND APPARATUS FOR TREATMENT AND PURIFICATION OF WASTEWATERAugust 2023May 2025Allow2210NoNo
18353070RECYCLING TREATMENT EQUIPMENT FOR RECYCLING HEAVY METALS FROM COMPLEXED HEAVY METAL WASTEWATERJuly 2023January 2024Allow610NoNo
18215733PRESERVATIVE REMOVAL FROM EYE DROPSJune 2023January 2025Abandon1810NoNo
18213870PINCH VALVE FOR SOIL EXTRUSION SYSTEMJune 2023September 2024Allow1500NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for art-unit 1779.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
134
Examiner Affirmed
64
(47.8%)
Examiner Reversed
70
(52.2%)
Reversal Percentile
94.3%
Higher than average

What This Means

With a 52.2% reversal rate, the PTAB has reversed the examiner's rejections more often than affirming them. This reversal rate is in the top 25% across the USPTO, indicating that appeals are more successful here than in most other areas.

Strategic Value of Filing an Appeal

Total Appeal Filings
504
Allowed After Appeal Filing
175
(34.7%)
Not Allowed After Appeal Filing
329
(65.3%)
Filing Benefit Percentile
58.9%
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, 34.7% 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 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 is strategically valuable. The act of filing often prompts favorable reconsideration during the mandatory appeal conference.

Art Unit 1779 - Prosecution Statistics Summary

Executive Summary

Art Unit 1779 is part of Group 1770 in Technology Center 1700. This art unit has examined 6,382 patent applications in our dataset, with an overall allowance rate of 67.0%. Applications typically reach final disposition in approximately 33 months.

Comparative Analysis

Art Unit 1779's allowance rate of 67.0% places it in the 23% 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 1779 receive an average of 2.12 office actions before reaching final disposition (in the 73% percentile). The median prosecution time is 33 months (in the 28% 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.