USPTO Art Unit 1779 Prosecution Statistics

Art Unit Information

Art Unit: 1779
Group: 1770
Tech Center: 1700
Total Cases: 6,079
Last Active: November 2025

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
18291244METHOD AND DEVICE FOR SEPARATION AND RECOVERY OF HEAVY METAL IONS BY MEMBRANE-FORMING MINERALIZATION FIXATIONDecember 2025January 2026Allow2410NoNo
19400304System And Method For Filtration Of Industrial And Mobile FluidsNovember 2025March 2026Allow300YesNo
19329762HYBRID SOLAR STILL AND ANAEROBIC MEMBRANE BIOREACTOR FOR WASTEWATER TREATMENTSeptember 2025March 2026Allow610NoNo
19271627CALCIUM METABORATE/LEAD TETROXIDE/MAGNESIUM BORATE/CARBON NANOCOMPOSITE AND METHOD OF PREPARATIONJuly 2025October 2025Allow310NoNo
19258875Intelligent Low-Carbon Treatment and Reuse System for Stormwater and WastewaterJuly 2025September 2025Allow310NoNo
19257018WATER SURFACE AUTOMATIC CLEANING APPARATUSJuly 2025February 2026Allow730YesNo
19250482PARTICULATE CRYSTALLINE NANOCOMPOSITE AND ADSORBENTJune 2025September 2025Allow210NoNo
19250391PARTICULATE CRYSTALLINE NANOCOMPOSITE AS A SORBENT FOR WASTEWATER TREATMENTJune 2025August 2025Allow210NoNo
19240758SWIMMING POOL ROBOT AND METHOD FOR CONTROLLING SWIMMING POOL ROBOTJune 2025November 2025Allow510NoNo
19241270AUTOMATIC POOL CLEANING APPARATUSJune 2025July 2025Allow100YesNo
19236767MULTICOMPONENT NANOCOMPOSITE MATERIALJune 2025September 2025Allow410NoNo
19229124WATER TREATMENT APPARATUSJune 2025August 2025Allow210NoNo
19228732VERSATILE PHYSICOCHEMICAL WATER TREATMENT SYSTEM AND METHODJune 2025September 2025Allow401NoNo
19227274INTELLIGENT MODULAR MEMBRANE-BASED INTEGRATEDAPPARATUS AND METHOD FOR RURAL DOMESTIC SEWAGE TREATMENTJune 2025October 2025Allow410NoNo
19213204NANOCOMPOSITE FOR THE IMMOBILIZATION OR DEGRADATION OF POLLUTANTSMay 2025August 2025Allow300NoNo
19206220SYSTEM FOR DESALINATING WATER WITH MULTIPLE DESALINATION PROCESSESMay 2025November 2025Allow610YesNo
19193892BIOENHANCER BASED ON MOLYBDENUM DISULFIDE COMPOSITE MATERIAL, PREPARATION METHOD AND APPLICATION THEREOFApril 2025November 2025Allow710NoNo
19186816Methods of PFAS Destruction using UV Irradiation at 222 NanometersApril 2025February 2026Allow1020NoNo
19184453REVERSE OSMOSIS SYSTEMSApril 2025August 2025Allow410YesNo
19178858MODULATING CROSS FLOW FILTERING SYSTEMApril 2025February 2026Abandon1010NoNo
19176166TARGETED IN-SITU ECOLOGICAL REMEDIATION APPARATUSApril 2025September 2025Allow500NoNo
19120312BIOFILTER BLOCK AND USE THEREOF FOR WASTEWATER TREATMENTApril 2025January 2026Allow920NoNo
19171379METHOD FOR PREDICTING AERATION QUANTITY REQUIRED TO MAINTAIN STABLE DISSOLVED OXYGEN CONCENTRATION IN ACTIVATED SLUDGE SYSTEMApril 2025August 2025Allow410NoNo
19086363SCUM REMOVAL DEVICEMarch 2025September 2025Allow610NoNo
19077093WATER DECONTAMINATION ADSORBENT AND METHOD OF MAKINGMarch 2025May 2025Allow210NoNo
19074652NANOCOMPOSITES FOR PHOTODEGRADATION OF CONTAMINANTSMarch 2025September 2025Allow610YesNo
19072970UNDERWATER GERMICIDAL LAMP ASSEMBLY AND POOL-CLEANING ROBOTMarch 2025November 2025Allow820NoNo
19072395NANOCOMPOSITE FOR WATER DECONTAMINATIONMarch 2025October 2025Allow820NoNo
19071555WATER DECONTAMINATION USING NANOCOMPOSITEMarch 2025May 2025Allow210YesNo
19071548SYSTEM FOR COPROCESSING OIL DRILLING WASTEMarch 2025August 2025Allow610YesNo
19070645WATER SURFACE AUTOMATIC CLEANING APPARATUSMarch 2025June 2025Allow410YesNo
19069227ASPERGILLUS SP. DH4 WITH AEROBIC DENITRIFICATION ENHANCED BY INORGANIC ELECTRON DONOR AND USE THEREOFMarch 2025May 2025Allow200NoNo
19067005FABRICATION OF Ca3Co4O9/MgO NANOCOMPOSITE MATERIALS USING PECHINI SOL-GEL METHODFebruary 2025April 2025Allow200NoNo
19062203WATER DECONTAMINATION VIA C3N4@MoO3/MgAl2O4 NANOCOMPOSITEFebruary 2025August 2025Allow520NoNo
19061674COMBINED FILTER ELEMENT MECHANISMFebruary 2025December 2025Allow1020YesNo
19061208NANOCOMPOSITES FOR PHOTODEGRADATION OF CONTAMINANTSFebruary 2025April 2025Allow210NoNo
19056917METHOD AND SYSTEM FOR CONTROLLING SALT CHLORINE GENERATION AND SALT CHLORINE GENERATORFebruary 2025November 2025Allow910YesNo
19048586NANOCOMPOSITE FOR PURIFICATION OF CONTAMINATED WATERFebruary 2025March 2025Allow100NoNo
19043971WETLAND SYSTEM FOR TREATMENT OF WASTEWATER BRINEFebruary 2025June 2025Allow510YesNo
19039812METHOD FOR PURIFYING POLLUTED WATERJanuary 2025March 2025Allow210NoNo
19040213WATER FILTERING DEVICES AND METHODS OF USING THE SAMEJanuary 2025September 2025Allow710NoNo
19040780PORTABLE SWIMMING POOL SKIMMERJanuary 2025August 2025Allow630YesNo
19038819ULTRASONIC DEVICES AND METHODS FOR REGENERATION OF ACTIVATED CARBONJanuary 2025May 2025Allow400YesNo
19031604Ocean Alkalinity Release APPARATUS AND METHODJanuary 2025June 2025Allow510YesNo
19030102FILTER-HOUSING INTERFACE DESIGNS FOR HEATING, VENTILATION, AND/OR AIR CONDITIONING SYSTEMSJanuary 2025June 2025Allow511YesNo
19023327CONNECTION STRUCTURE FOR FILTRATION DEVICEJanuary 2025March 2025Allow200YesNo
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
19019450DEVICE AND METHOD FOR TREATING NITROGEN AND PHOSPHORUS POLLUTANTS IN MARICULTURE WASTEWATERJanuary 2025June 2025Allow510NoNo
19014146WATER SURFACE CLEANING ROBOTJanuary 2025July 2025Allow610NoNo
19001707COF@HYDROMAGNESITE COMPOSITE MATERIAL AND PREPARATION METHOD AND APPLLICATION THEREOFDecember 2024March 2025Allow200NoNo
18990201OIL FILTER CARTRIDGEDecember 2024December 2025Allow1220NoNo
18985265AUTOMATIC POOL CLEANING APPARATUSDecember 2024May 2025Allow510YesNo
18974591REFRIGERANT FILTRATION APPARATUS AND METHODDecember 2024August 2025Abandon810NoNo
18969914WATER SURFACE CLEANING APPARATUSDecember 2024May 2025Allow510NoNo
18966274GEOPOLYMER COMPOSITE FOR WATER DECONTAMINATIONDecember 2024February 2025Allow310NoNo
18967050METHOD OF PURIFICATION AND PURIFIED PRODUCTSDecember 2024March 2025Allow410YesNo
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
18961927METHOD FOR SIMULTANEOUS CARBON DIOXIDE CAPTURE AND VALORIZATION OF INDUSTRIAL BRINE USING A TWO-STAGE ELECTRODIALYSIS PROCESSNovember 2024October 2025Allow1010NoNo
18957121VORTICAL CROSS-FLOW FILTRATION SYSTEMNovember 2024May 2025Allow520YesNo
18954346METAL OXIDE-BASED NANOCOMPOSITE MATERIAL FOR WATER DECONTAMINATIONNovember 2024February 2025Allow200NoNo
18934454WATER HARVESTERNovember 2024April 2025Allow511YesNo
18934939SULFER-DOPED SILVER TUNGSTATE (AG2WO4) NANOPARTICLES FOR WATER DECONTAMINATIONNovember 2024January 2025Allow210NoNo
18934248Self Contained Modular Decentralized Point of Use Fluid Treatment System ApparatusNovember 2024February 2025Allow300YesNo
18927353WATER PURIFICATION SYSTEMOctober 2024September 2025Abandon1120NoNo
18926509COOLING WATER MANAGEMENT SYSTEMS HAVING CONTINUOUS BIOFILM MONITORING AND ASSOCIATED METHODS FOR USING THE SAMEOctober 2024July 2025Allow920NoNo
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
18826568Method for Making Bentonite/Natural Fiber NanocompositeSeptember 2024July 2025Allow1110NoNo
18842719BUBBLE GENERATION DEVICE AND LIQUID FILTRATION DEVICEAugust 2024May 2025Allow910YesNo
18795502DEVICES AND METHODS FOR MOVING, REMOVING AND/OR INSTALLING ONE OR MORE COMPONENTS OF A TREATMENT UNITAugust 2024September 2025Allow1420YesYes
18794594WATER RECLAMATION SYSTEMAugust 2024November 2024Allow300YesNo
18792821METHOD AND APPARATUS FOR PRODUCING WATER FOR PURE WATER, METHOD FOR PRODUCING PURE WATER, AND PURE WATER PRODUCTION SYSTEMAugust 2024November 2025Allow1620NoNo
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
18743072SPACER FILM WITH INTEGRATED LAMINATION STRIPJune 2024January 2026Allow2000YesNo
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
18675855USE OF BASALT FOR ADSORBING TOXIC MATERIALMay 2024July 2025Allow1410NoNo
18676015FILTRATION RECOVERY DEVICE AND FILTRATION RECOVERY METHODMay 2024November 2025Allow1710NoNo
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
18668311COMPOSITE ION EXCHANGE MEMBRANE AND METHOD OF MAKING SAMEMay 2024February 2026Allow2020NoNo
18663648BASALT FIBER FOR ADSORBING TOXIC MATERIALMay 2024July 2025Allow1410NoNo

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
150
Examiner Affirmed
74
(49.3%)
Examiner Reversed
76
(50.7%)
Reversal Percentile
94.5%
Higher than average

What This Means

With a 50.7% 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
527
Allowed After Appeal Filing
183
(34.7%)
Not Allowed After Appeal Filing
344
(65.3%)
Filing Benefit Percentile
62.1%
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 6,079 patent applications in our dataset, with an overall allowance rate of 65.8%. Applications typically reach final disposition in approximately 34 months.

Comparative Analysis

Art Unit 1779's allowance rate of 65.8% 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 2.22 office actions before reaching final disposition (in the 74% percentile). The median prosecution time is 34 months (in the 33% 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.