USPTO Examiner ZHANG RICHARD Z - Art Unit 1714

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
18267104TRENCHLESS MULTI-STAGE PIPE CLEANING DEVICE AND METHOD COMBINING ARTIFICIAL TORNADO AND DAGGER-LIKE MECHANICAL SANDAugust 2024February 2025Allow2000YesNo
18768321METHOD OF CLEANING MEMBER IN PROCESS CONTAINER, METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE, SUBSTRATE PROCESSING APPARATUS, AND RECORDING MEDIUMJuly 2024October 2025Allow1500YesNo
18762434APPARATUS AND METHOD FOR CLEANING SEMICONDUCTOR WAFERSJuly 2024September 2025Allow1400YesNo
18721110METHOD FOR CLEANING ELECTROPLATING DEVICEJune 2024March 2026Allow2100YesNo
18666319WAFER CLEANING METHOD AND SYSTEMMay 2024March 2026Allow2211NoNo
18659271DISHWASHING APPLIANCE AND COMMUNICATION-BASED OPERATION THEREOFMay 2024February 2026Allow2111YesNo
18626044TANK RINSING ARRANGEMENTApril 2024January 2026Abandon2201NoNo
18424771MULTI-LAYER MELAMINE SPONGEJanuary 2024January 2026Abandon2301NoNo
18423205SUBSTRATE TREATING METHOD AND SUBSTRATE TREATING APPARATUSJanuary 2024May 2025Allow1501YesNo
18423170SUBSTRATE TREATING METHODJanuary 2024February 2026Allow2510YesNo
18419773METHOD AND DEVICE FOR PURIFYING FLUIDS IN A CONTAINERJanuary 2024February 2026Allow2511YesNo
18417974Compositions for Engine Carbon Removal and Methods and Apparatus for Removing CarbonJanuary 2024February 2025Abandon1330NoNo
18413863METHOD FOR CLEANING A SYNTHETIC SURFACEJanuary 2024February 2025Abandon1310NoNo
18578884METHOD OF CLEANING SEMICONDUCTOR WAFER AND METHOD OF MANUFACTURING SEMICONDUCTOR WAFERJanuary 2024October 2025Allow2200YesNo
18392552SUBSTRATE PROCESSING APPARATUS AND SUBSTRATE PROCESSING METHODDecember 2023October 2024Allow1010YesNo
18537661SUBSTRATE PROCESSING APPARATUSDecember 2023January 2026Allow2511YesNo
18525941DISHWASHERDecember 2023August 2024Allow901YesNo
18525785SUBSTRATE PROCESSING APPARATUS AND SUBSTRATE MONITORING METHODNovember 2023November 2025Allow2411NoNo
18518056SUBSTRATE PROCESSING APPARATUS AND SUBSTRATE PROCESSING METHODNovember 2023April 2025Allow1701YesNo
18507070SUBSTRATE PROCESSING APPARATUS, OPERATING METHOD THEREOF, AND PHOTO SPINNER EQUIPMENTNovember 2023March 2026Allow2811YesNo
18388124Compositions for Engine Carbon Removal and Methods and Apparatus for Removing CarbonNovember 2023March 2025Abandon1610NoNo
18502849SIMULTANEOUSLY UNBLOCKING MULTIPLE VALVE FITTINGSNovember 2023September 2024Allow1001YesNo
18501133VEHICLE CAMERA LENS CLEANING SYSTEM WITH SWIRL FLOW GENERATORNovember 2023July 2025Allow2011YesNo
18495180SUBSTRATE PROCESSING APPARATUS AND SUBSTRATE PROCESSING METHODOctober 2023July 2025Allow2121YesNo
18492541DISH RACK AND WARE WASHING SYSTEM FOR REUSABLE PLASTIC WARESOctober 2023December 2025Allow2611YesNo
18476388Vacuum DeviceSeptember 2023April 2025Abandon1901NoNo
18551567SUBSTRATE PROCESSING METHOD AND SUBSTRATE PROCESSING APPARATUSSeptember 2023January 2026Allow2811NoNo
18369784Calibration DeviceSeptember 2023March 2026Allow3000YesNo
18243708DEVICE FOR CLEANING SUPPORT BARS OF A FIRST WORKPIECE SUPPORT OF A FIRST LASER CUTTING MACHINESeptember 2023March 2025Abandon1901NoNo
18462152BULK ADDITIVE DISPENSING SYSTEM FOR A DISHWASHER APPLIANCESeptember 2023November 2025Abandon2721NoNo
18461182DISHWASHER WITH PERSONALIZED UTENSIL DETECTION AND SCANNING AIDS THEREFORSeptember 2023December 2025Allow2721YesNo
18276923Tank Support Jig and Tank Cleaning MethodAugust 2023January 2026Abandon2901NoNo
18228905LIQUID PROCESSING APPARATUS AND LIQUID PROCESSING METHODAugust 2023March 2025Allow1911YesNo
18262652METHOD FOR MAINTAINING A DELIVERY ROBOTJuly 2023November 2025Abandon2711YesNo
18355706METHOD FOR CLEANING A PRINT HEADJuly 2023June 2025Allow2321YesNo
18262112ULTRASONIC SELF-CLEANING AIR FILTRATION DEVICEJuly 2023July 2025Abandon2401NoNo
18355116METHOD FOR PERFORMING A SELF-CLEAN CYCLE IN A WASHING MACHINE APPLIANCEJuly 2023April 2025Allow2111YesNo
18215184SUBSTRATE PROCESSING APPARATUS AND SUBSTRATE PROCESSING METHODJune 2023May 2025Allow2321YesNo
18258926METHOD OF CLEANING CHAMBER COMPONENTS WITH METAL ETCH RESIDUESJune 2023April 2025Allow2211YesNo
18266774CLEANING APPARATUS FOR CLEANING MEMBER, CLEANING METHOD FOR CLEANING MEMBER, AND SUBSTRATE CLEANING METHODJune 2023March 2025Allow2111YesNo
18205738CONTROL METHOD FOR DISHWASHER AND DISHWASHERJune 2023June 2025Allow2511YesNo
18328626SUBSTRATE CLEANING DEVICE AND SUBSTRATE CLEANING METHODJune 2023January 2024Allow800YesNo
18328645SUBSTRATE CLEANING DEVICE AND SUBSTRATE CLEANING METHODJune 2023January 2024Allow800NoNo
18328057SUBSTRATE TREATING APPARATUS AND SUBSTRATE TREATING METHODJune 2023July 2025Allow2621YesNo
18325129REMOVAL METHOD APPLIED TO ALUMINUM ELECTRODE SHEET WITH OXIDE LAYERMay 2023March 2026Abandon3450YesNo
18139832AUTOMATED DEVICE CLEANING AND TRANSFERRING SYSTEMS AND METHODSApril 2023December 2025Allow3121YesNo
18302866DISHWASHER AND DISPENSERApril 2023July 2024Allow1500YesNo
18248924METHOD OF CLEANING PIPE OF SINGLE-WAFER PROCESSING WAFER CLEANING APPARATUSApril 2023October 2024Allow1810YesNo
18296816METHOD FOR CLEANING SUBSTRATE AND CLEANING DEVICEApril 2023June 2025Abandon2641NoNo
18028244EPITAXIAL WAFER CLEANING METHODMarch 2023August 2025Allow2830YesNo
18028142Reactor Cleaning MethodMarch 2023April 2025Allow2520YesNo
18185310CLEANING APPARATUSMarch 2023July 2023Allow400YesNo
18026635METHOD FOR KEEPING CLEAR A VIEWING REGION OF AN OPTICAL MONITORING DEVICEMarch 2023June 2025Allow2730YesNo
18025562RECIPROCATING PRESSURE WASHER SYSTEM FOR CLEANING OPEN GEARSMarch 2023September 2024Allow1900YesNo
18164072Apparatus and method for cleaning metal smallwareFebruary 2023March 2025Allow2511YesNo
18159796SYSTEM AND METHOD FOR DETECTING PERACTIC ACID AND HYDROGEN PEROXIDE VAPORJanuary 2023March 2025Abandon2511NoNo
18091309Platen Shield Cleaning SystemDecember 2022May 2023Allow400YesNo
17979194METHODS FOR IMPLEMENTING CLEANING CYCLES IN COMMERCIAL WASHING MACHINE APPLIANCESNovember 2022August 2023Allow901YesNo
17968302METHODS OF CLEANING A DRINKING HOSE (STRAW)October 2022May 2024Allow1900YesNo
17936259METHOD AND APPARATUS, INCLUDING HOSE REEL, FOR CLEANING AN OIL AND GAS WELL RISER ASSEMBLYSeptember 2022May 2025Allow3240YesNo
17955206APPARATUS AND METHOD FOR PROCESSING SUBSTRATESeptember 2022April 2024Allow1940YesNo
17933285Method of Filling A Medical Washer/DisinfectorSeptember 2022June 2025Allow3311YesNo
17933019AUTOMATED CLEANING METHODS FOR INTERNAL CAVITIES OF PRESSURE INSTRUMENTSSeptember 2022August 2024Allow2320YesNo
17908934PURIFICATION OF METALLIC OBJECTS IN THE PRESENCE OF A LIQUID AND LAYER SILICATE(S)September 2022November 2025Allow3911YesNo
17929357METHODS AND APPARATUS FOR WASHING OBJECTS PRODUCED BY STEREOLITHOGRAPHYSeptember 2022February 2024Allow1721YesNo
17901904SUBSTRATE TREATING APPARATUS AND SUBSTRATE TREATING METHODSeptember 2022May 2024Allow2120YesNo
17900318SHUTTER DISK FOR PHYSICAL VAPOR DEPOSITION (PVD) CHAMBERAugust 2022May 2025Allow3241YesNo
17892214SUBSTRATE TREATING METHOD AND SUBSTRATE TREATING APPARATUSAugust 2022May 2024Allow2130NoNo
17866908WET BENCH STRUCTUREJuly 2022December 2023Allow1721YesNo
17865851WAFER PROCESSING METHODJuly 2022October 2023Allow1510YesNo
17844885METHOD OF TREATING DISHWARE IN A DOMESTIC AUTOMATIC DISHWASHING MACHINEJune 2022August 2024Abandon2620NoNo
17838855METHODS AND APPARATUS FOR PROCESSING A SUBSTRATEJune 2022January 2025Abandon3120NoNo
17838516DISHWASHER AND METHOD OF OPERATINGJune 2022September 2023Allow1500YesNo
17838860METHODS AND APPARATUS FOR PROCESSING A SUBSTRATEJune 2022January 2025Abandon3120NoNo
17805073SUBSTRATE PROCESSING METHOD AND SUBSTRATE PROCESSING APPARATUSJune 2022September 2024Abandon2731YesNo
17737345SUBSTRATE TREATING APPARATUS AND SUBSTRATE TREATING METHOD USING THE SAMEMay 2022August 2025Abandon3941NoYes
17771722METHOD AND SYSTEM FOR SETTING PARAMETERS OF A TREATMENT CYCLEApril 2022October 2025Allow4231YesNo
17709312AUTONOMOUS CLEANING DEVICE, METHOD FOR TRAVEL CONTROL FOR AUTONOMOUS CLEANING DEVICE, AND STORAGE MEDIUMMarch 2022February 2025Allow3541NoNo
17689199SUBSTRATE PROCESSING APPARATUS AND SUBSTRATE PROCESSING METHODMarch 2022October 2023Allow1911NoNo
17640513A Method for Cleaning the Inside of PipeworkMarch 2022March 2025Allow3630YesNo
17685926ARTIFICIAL INTELLIGENCE DISHWASHER AND DISHWASHING METHOD USING THE SAMEMarch 2022March 2024Abandon2530YesNo
17639658METHOD FOR CONTROLLING A HOME APPLIANCEMarch 2022March 2025Allow3740YesNo
17681670DRYING SYSTEM WITH INTEGRATED SUBSTRATE ALIGNMENT STAGEFebruary 2022October 2023Allow2011YesNo
17586158DISHWASHER AND CONTROL METHOD THEREOFJanuary 2022April 2024Abandon2721NoNo
17585436Straw washer system, device, and methodJanuary 2022October 2024Abandon3210NoNo
17579303METHOD FOR TREATING SUBSTRATEJanuary 2022July 2024Allow3050YesNo
17627968METHOD FOR CONTROLLING CLEANERJanuary 2022February 2024Allow2501YesNo
17576774PHOTORESIST REMOVAL METHOD AND PHOTORESIST REMOVAL SYSTEMJanuary 2022October 2024Allow3330YesNo
17572961CONTROL METHOD OF DISHWASHERJanuary 2022January 2024Allow2421YesNo
17596932SCREW-TYPE SEPARATION DEVICE, CASING, WASTEWATER TREATMENT SYSTEM, AND CLEANING METHOD OF SCREW-TYPE SEPARATION DEVICEDecember 2021April 2024Abandon2701NoNo
17616218SUBSTRATE PROCESSING APPARATUS AND SUBSTRATE PROCESSING METHODDecember 2021January 2026Allow4911NoNo
17536659METHOD FOR OPERATING A VEHICLE TREATMENT SYSTEM, VEHICLE TREATMENT SYSTEM, USE OF A VEHICLE TREATMENT SYSTEM, AND COMPUTER PROGRAM PRODUCTNovember 2021April 2025Allow4121YesNo
17595284DISHWASHER FOR USE IN A MEANS OF TRANSPORTNovember 2021December 2023Allow2511YesNo
17608868SYSTEM FOR OPTICAL WASH ITEM RECOGNITION IN DISHWASHERS, METHOD FOR OPTICAL WASH ITEM RECOGNITION, DISHWASHER WITH AN OPTICAL WASH ITEM RECOGNITION SYSTEM AND METHOD FOR OPERATING SUCH A DISHWASHERNovember 2021August 2025Allow4650YesYes
17509785Device for Cleaning an Espresso MachineOctober 2021September 2022Allow1100YesNo
17489277SUBSTRATE CLEANING DEVICE AND SUBSTRATE CLEANING METHODSeptember 2021September 2023Abandon2311NoNo
17475940Compositions for Engine Carbon Removal and Methods and Apparatus for Removing CarbonSeptember 2021November 2023Abandon2621NoNo
17475843Compositions for Engine Carbon Removal and Methods and Apparatus for Removing Carbon - III - C1September 2021January 2024Abandon2821NoNo
17470237Device for Cleaning an Espresso MachineSeptember 2021February 2023Allow1801YesNo
17436504CLEANING DEVICE WITH CLEANING MEDIUM RECEPTION CHAMBER FOR RECEIVING CLEANING MEDIUM AFTER PASSING A DEVICE TO BE CLEANEDSeptember 2021June 2025Allow4551YesNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner ZHANG, RICHARD Z.

Strategic Value of Filing an Appeal

Total Appeal Filings
6
Allowed After Appeal Filing
3
(50.0%)
Not Allowed After Appeal Filing
3
(50.0%)
Filing Benefit Percentile
77.4%
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, 50.0% of applications that filed an appeal were subsequently allowed. This appeal filing benefit rate is in the top 25% across the USPTO, indicating that filing appeals is particularly effective here. The act of filing often prompts favorable reconsideration during the mandatory appeal conference.

Strategic Recommendations

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

Examiner ZHANG, RICHARD Z - Prosecution Strategy Guide

Executive Summary

Examiner ZHANG, RICHARD Z works in Art Unit 1714 and has examined 139 patent applications in our dataset. With an allowance rate of 60.4%, this examiner allows applications at a lower rate than most examiners at the USPTO. Applications typically reach final disposition in approximately 31 months.

Allowance Patterns

Examiner ZHANG, RICHARD Z's allowance rate of 60.4% places them in the 21% percentile among all USPTO examiners. This examiner is less likely to allow applications than most examiners at the USPTO.

Office Action Patterns

On average, applications examined by ZHANG, RICHARD Z receive 2.47 office actions before reaching final disposition. This places the examiner in the 72% percentile for office actions issued. This examiner issues a slightly above-average number of office actions.

Prosecution Timeline

The median time to disposition (half-life) for applications examined by ZHANG, RICHARD Z is 31 months. This places the examiner in the 54% percentile for prosecution speed. Prosecution timelines are slightly faster than average with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a +75.1% benefit to allowance rate for applications examined by ZHANG, RICHARD Z. This interview benefit is in the 99% percentile among all examiners. Recommendation: Interviews are highly effective with this examiner and should be strongly considered as a prosecution strategy. Per MPEP § 713.10, interviews are available at any time before the Notice of Allowance is mailed or jurisdiction transfers to the PTAB.

Request for Continued Examination (RCE) Effectiveness

When applicants file an RCE with this examiner, 21.2% of applications are subsequently allowed. This success rate is in the 24% percentile among all examiners. Strategic Insight: RCEs show lower effectiveness with this examiner compared to others. Consider whether a continuation application might be more strategic, especially if you need to add new matter or significantly broaden claims.

After-Final Amendment Practice

This examiner enters after-final amendments leading to allowance in 13.8% of cases where such amendments are filed. This entry rate is in the 14% percentile among all examiners. Strategic Recommendation: This examiner rarely enters after-final amendments compared to other examiners. You should generally plan to file an RCE or appeal rather than relying on after-final amendment entry. Per MPEP § 714.12, primary examiners have discretion in entering after-final amendments, and this examiner exercises that discretion conservatively.

Pre-Appeal Conference Effectiveness

When applicants request a pre-appeal conference (PAC) with this examiner, 200.0% result in withdrawal of the rejection or reopening of prosecution. This success rate is in the 93% percentile among all examiners. Strategic Recommendation: Pre-appeal conferences are highly effective with this examiner compared to others. Before filing a full appeal brief, strongly consider requesting a PAC. The PAC provides an opportunity for the examiner and supervisory personnel to reconsider the rejection before the case proceeds to the PTAB.

Appeal Withdrawal and Reconsideration

This examiner withdraws rejections or reopens prosecution in 100.0% of appeals filed. This is in the 88% percentile among all examiners. Of these withdrawals, 25.0% occur early in the appeal process (after Notice of Appeal but before Appeal Brief). Strategic Insight: This examiner frequently reconsiders rejections during the appeal process compared to other examiners. Per MPEP § 1207.01, all appeals must go through a mandatory appeal conference. Filing a Notice of Appeal may prompt favorable reconsideration even before you file an Appeal Brief.

Petition Practice

When applicants file petitions regarding this examiner's actions, 100.0% are granted (fully or in part). This grant rate is in the 90% percentile among all examiners. Strategic Note: Petitions are frequently granted regarding this examiner's actions compared to other examiners. Per MPEP § 1002.02(c), various examiner actions are petitionable to the Technology Center Director, including prematureness of final rejection, refusal to enter amendments, and requirement for information. If you believe an examiner action is improper, consider filing a petition.

Examiner Cooperation and Flexibility

Examiner's Amendments: This examiner makes examiner's amendments in 0.0% of allowed cases (in the 4% percentile). This examiner rarely makes examiner's amendments compared to other examiners. You should expect to make all necessary claim amendments yourself through formal amendment practice.

Quayle Actions: This examiner issues Ex Parte Quayle actions in 0.0% of allowed cases (in the 4% percentile). This examiner rarely issues Quayle actions compared to other examiners. Allowances typically come directly without a separate action for formal matters.

Prosecution Strategy Recommendations

Based on the statistical analysis of this examiner's prosecution patterns, here are tailored strategic recommendations:

  • Prepare for rigorous examination: With a below-average allowance rate, ensure your application has strong written description and enablement support. Consider filing a continuation if you need to add new matter.
  • Prioritize examiner interviews: Interviews are highly effective with this examiner. Request an interview after the first office action to clarify issues and potentially expedite allowance.
  • Plan for RCE after final rejection: This examiner rarely enters after-final amendments. Budget for an RCE in your prosecution strategy if you receive a final rejection.
  • Request pre-appeal conferences: PACs are highly effective with this examiner. Before filing a full appeal brief, request a PAC to potentially resolve issues without full PTAB review.
  • Appeal filing as negotiation tool: This examiner frequently reconsiders rejections during the appeal process. Filing a Notice of Appeal may prompt favorable reconsideration during the mandatory appeal conference.

Relevant MPEP Sections for Prosecution Strategy

  • MPEP § 713.10: Examiner interviews - available before Notice of Allowance or transfer to PTAB
  • MPEP § 714.12: After-final amendments - may be entered "under justifiable circumstances"
  • MPEP § 1002.02(c): Petitionable matters to Technology Center Director
  • MPEP § 1004: Actions requiring primary examiner signature (allowances, final rejections, examiner's answers)
  • MPEP § 1207.01: Appeal conferences - mandatory for all appeals
  • MPEP § 1214.07: Reopening prosecution after appeal

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.