USPTO Examiner PETTITT JOHN F - Art Unit 3763

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19248370METHOD AND SYSTEM FOR ASSISTING THE MANAGEMENT OF A LIQUEFIED GAS TRANSPORT SHIP OF THE TYPE CONSUMING EVAPORATED GAS FOR ITS PROPULSIONJune 2025January 2026Allow710YesNo
18788094ENERGY STORAGE ENERGY SYSTEMJuly 2024February 2026Abandon1921NoNo
18651663LNG GAS SUPPLY SYSTEMS FOR SHIPSApril 2024December 2024Allow811YesNo
18685938HYDROGEN STORAGE-COMPRESSION SYSTEMFebruary 2024March 2026Abandon2541NoNo
18400598Methane Retention SystemDecember 2023March 2025Abandon1511NoNo
18400238Methane Retention SystemDecember 2023March 2025Abandon1511NoNo
18400404Methane Retention SystemDecember 2023December 2024Abandon1211NoNo
18565968METHOD AND PLANT FOR HYDROGEN LIQUEFACTIONNovember 2023March 2026Abandon2801NoNo
18516435CRYOPUMP AND CRYOPUMP REGENERATION METHODNovember 2023January 2026Allow2610YesNo
18503507APPARATUS, SYSTEM AND METHOD FOR HEAT AND COLD RECOVERY ONBOARD A FLOATING STORAGE REGASIFICATION UNITNovember 2023March 2026Abandon2801NoNo
18288785DYNAMIC ACOUSTIC IMPEDANCE MATCHING FOR CRYOCOOLERSOctober 2023May 2025Abandon1811NoNo
18268961METHOD FOR SEPARATING AIR BY CRYOGENIC DISTILLATIONJune 2023January 2026Allow3110NoNo
18038386METHOD AND SYSTEM FOR ASSISTING THE MANAGEMENT OF A LIQUEFIED GAS TRANSPORT SHIP OF THE TYPE CONSUMING EVAPORATED GAS FOR ITS PROPULSIONMay 2023February 2025Allow2121YesNo
18315798CRYOGENIC STORAGE SYSTEMMay 2023November 2025Abandon3001NoNo
18195685Methane Retention SystemMay 2023December 2024Abandon1921NoNo
18136733SYSTEMS AND METHODS FOR CRYOGENIC REFRIGERATIONApril 2023March 2026Allow3510NoNo
18134758NITROGEN GENERATING DEVICE AND NITROGEN GENERATING METHODApril 2023December 2025Allow3221NoNo
18030379METHOD FOR SUPPLYING CRYOGENIC FLUID TO A USER STATION, IN PARTICULAR A MACHINING STATIONApril 2023November 2025Abandon3210NoNo
18023715A HYDROGEN OR HELIUM THROTTLING LIQUEFACTION SYSTEM USING DIRECT CURRENT FLOW FROM THE COLD AND HOT ENDS OF THE REGENERATIVE CRYOCOOLERSFebruary 2023August 2025Allow3031YesNo
18066369Managing Make-Up Gas Composition Variation for a High Pressure Expander ProcessDecember 2022May 2024Allow1711YesNo
17985280REFRIGERATION SYSTEMNovember 2022September 2025Abandon3411NoNo
17974768GAS PROCESSING METHODOLOGY UTILIZING REFLUX AND ADDITIONALLY SYNTHESIZED STREAM OPTIMIZATIONOctober 2022November 2025Abandon3701NoNo
18049246Modularized Beverage Holder for Actively Cooling Beverages and Method for Performing the SameOctober 2022November 2023Abandon1211YesNo
17956685CO2 SEPARATION & LIQUEFACTION SYSTEM AND METHODSeptember 2022May 2024Abandon2011NoNo
17954242Methane Retention SystemSeptember 2022July 2023Abandon910NoNo
17940237ARCTIC CASCADE METHOD FOR NATURAL GAS LIQUEFACTION IN A HIGH-PRESSURE CYCLE WITH PRE-COOLING BY ETHANE AND SUB-COOLING BY NITROGEN, AND A PLANT FOR ITS IMPLEMENTATIONSeptember 2022June 2023Allow1010NoNo
17930489FULL LIQUID-PRODUCT AIR SEPARATION EQUIPMENT AND PROCESS THEREFORSeptember 2022March 2025Abandon3040NoNo
17940482BOIL-OFF GAS RELIQUEFACTION SYSTEMSeptember 2022January 2025Allow2830NoNo
17887999AUTOMATIC VEGETATION WATERING APPARATUS AND METHODAugust 2022December 2024Allow2811YesNo
17875128METHODS AND SYSTEMS FOR NATURAL GAS PURIFICATION INTEGRATED WITH GAS COMPRESSIONJuly 2022January 2026Abandon4121NoNo
17863775BOIL-OFF GAS RELIQUEFACTION METHOD AND SYSTEM FOR LNG VESSELJuly 2022April 2025Abandon3340NoNo
17854466METHOD AND APPARATUS FOR COOLING IN LIQUEFACTION PROCESSJune 2022October 2025Abandon4021NoNo
17850649METHOD AND APPARATUS FOR PRODUCING PRODUCT NITROGEN GAS AND PRODUCT ARGONJune 2022November 2024Abandon2921NoNo
17839476ENERGY-EFFICIENT PROCESS FOR PREPARING NITROGEN AND OXYGEN FOR GLASS MELTING FURNACEJune 2022February 2023Allow820NoNo
17745965GAS PROCESSING METHODOLOGY UTILIZING REFLUX AND ADDITIONALLY SYNTHESIZED STREAM OPTIMIZATIONMay 2022July 2024Abandon2630YesNo
17744948Methane Retention SystemMay 2022October 2023Abandon1721NoNo
17658605LIQUID OR SUPERCRITICAL CARBON DIOXIDE CAPTURE FROM EXHAUST GASApril 2022February 2023Allow1011YesNo
17701540CRYOSTAT AND QUANTUM COMPUTING SYSTEM HAVING SAMEMarch 2022July 2022Allow301YesNo
17696782FUEL STORAGE MODULE ASSEMBLYMarch 2022September 2024Abandon3111NoNo
17580830METHOD FOR FLEXIBLE RECOVERY OF ARGON FROM A CRYOGENIC AIR SEPARATION UNITJanuary 2022September 2025Abandon4311NoNo
17580860SYSTEM AND METHOD FOR FLEXIBLE RECOVERY OF ARGON FROM A CRYOGENIC AIR SEPARATION UNITJanuary 2022August 2025Abandon4311NoNo
17567030INTEGRATED COMPRESSION AND MEMBRANE SEPARATION PROCESS FOR REMOVAL OF CO2 FROM RAW NATURAL GASJanuary 2022October 2025Abandon4621NoNo
17558524Apparatus and Process for Liquefying GasesDecember 2021July 2025Allow4320NoNo
17555292ENCLOSURE AND METHOD FOR CONSTRUCTING AN ENCLOSURE OF AN APPARATUS FOR SEPARATION BY CRYOGENIC DISTILLATIONDecember 2021April 2025Abandon4021NoNo
17542682Hydrogen LiquefierDecember 2021September 2024Allow3311NoNo
17614287DEVICE FOR MEASURING RESIDUAL AMOUNTS IN HIGH-PRESSURE CONTAINER IN WHICH LIQUEFIED GAS IS STORED, AND HIGH-PRESSURE CONTAINER MANAGEMENT SYSTEM IN WHICH SAME IS MOUNTEDNovember 2021December 2023Abandon2510NoNo
17528576INFORMATION PROCESSING DEVICE AND ELECTRONIC DEVICE COOLING METHODNovember 2021February 2024Abandon2711NoNo
17515475Methods For Fabricating Pressure VesselsOctober 2021February 2025Allow4040NoYes
17500877METHOD AND APPARATUS FOR PRODUCING HIGH-PRESSURE NITROGENOctober 2021December 2024Abandon3821NoNo
17495456LOW-PRESSURE NITROGEN TURBINE WITH AIR BOOSTER PARALLEL TO THE BOOSTER AIR COMPRESSOROctober 2021July 2024Abandon3320NoNo
17481055APPARATUS FOR THE SEPARATION OF AIR BY CRYOGENIC DISTILLATION COMPRISING THREE COLUMNS, INCLUDING TWO CONCENTRIC COLUMNSSeptember 2021September 2025Abandon4821NoNo
17469823METHOD AND APPARATUS FOR PRODUCING HIGH-PURITY NITROGEN AND LOW-PURITY OXYGENSeptember 2021November 2023Allow2610YesNo
17406620ELECTROCALORIC HEAT TRANSFER SYSTEMAugust 2021January 2024Abandon2921YesNo
17404194NITROGEN PRODUCING CRYOGENIC AIR SEPARATION UNIT WITH EXCESS AIR CIRCUITAugust 2021November 2024Abandon3921NoNo
17402554SYSTEM AND METHOD FOR TREATING ASSOCIATED GASAugust 2021May 2024Allow3321YesNo
17398151METHODS AND SYSTEMS FOR HYDROGEN LIQUEFACTIONAugust 2021June 2022Allow1001YesNo
17444584Systems and Methods of Removing Contaminants in a Liquid Nitrogen Stream Used to Liquefy Natural GasAugust 2021December 2023Abandon2821NoNo
17393477PHASE IMPLEMENTATION OF NATURAL GAS LIQUID RECOVERY PLANTSAugust 2021February 2025Allow4241YesNo
17310346METHOD AND FILLING DEVICE FOR FILLING A TRANSPORT TANKJuly 2021February 2025Abandon4311NoNo
17381404AIR SEPARATION APPARATUS, ADSORBER, AND METHODJuly 2021September 2024Allow3821YesNo
17368240MOTOR VEHICLE COMPRESSED GAS TANKJuly 2021November 2024Abandon4121NoYes
17343333BOIL-OFF GAS HANDLING IN LNG TERMINALSJune 2021March 2022Allow920YesNo
17326126METHOD FOR COOLING A SYSTEM IN THE 120K TO 200K RANGEMay 2021March 2025Abandon4611NoNo
17318986FUEL STORAGE MODULE ASSEMBLYMay 2021August 2022Allow1511YesNo
17315031METHOD FOR OPERATING A RELIQUEFACTION SYSTEMMay 2021December 2023Abandon3101NoNo
17314524PROCESS FOR SUPPLYING OXYGEN AND/OR NITROGEN AND ALSO ARGON TO A GEOGRAPHIC ZONEMay 2021November 2024Abandon4321NoNo
17313251FLUID RECOVERY PROCESS AND APPARATUS FOR XENON AND OR KRYPTON RECOVERYMay 2021August 2024Allow3911YesNo
17244346ENHANCEMENTS TO A DUAL COLUMN NITROGEN PRODUCING CRYOGENIC AIR SEPARATION UNITApril 2021June 2024Abandon3820NoNo
17229910ENHANCEMENTS TO A DUAL COLUMN NITROGEN PRODUCING CRYOGENIC AIR SEPARATION UNITApril 2021May 2024Abandon3720NoNo
17218311MOBILE LIQUEFACTION PLANT FOR LIQUEFYING HELIUM, ASSOCIATED SYSTEM, AND ASSOCIATED USE OF THE SYSTEMMarch 2021February 2025Abandon4601NoNo
17213137SYSTEM FOR PREPARING DEEPY SUBCOOLED LIQUID OXYGEN BASED ON MIXING OF LIQUID OXYGEN AND LIQUID NITROGEN AND THEN VACUUM-PUMPINGMarch 2021December 2021Allow910NoNo
17208210HELIUM CIRCULATION SYSTEM, CRYOGENIC REFRIGERATION METHOD, AND BIOMAGNETISM MEASURING APPARATUSMarch 2021October 2024Allow4330YesNo
17204441CRYOPUMP AND CONTROL METHOD FOR CRYOPUMPMarch 2021April 2024Allow3740YesYes
17193682CRYOPUMP AND CRYOPANELMarch 2021October 2023Abandon3230NoNo
17187956METHOD AND APPARATUS FOR COOLING DOWN A CRYOGENIC HEAT EXCHANGER AND METHOD OF LIQUEFYING A HYDROCARBON STREAMMarch 2021January 2025Abandon4631YesNo
16958454CRYOGENIC RECTIFICATION PROCESS-BASED METHOD FOR PRODUCING AIR PRODUCT, AND AIR SEPARATION SYSTEMJanuary 2021December 2023Abandon4101NoNo
17126036HELIUM GAS LIQUEFIER AND METHOD FOR LIQUEFYING HELIUM GASDecember 2020February 2024Allow3811NoNo
17251408SYSTEM AND M ETHOD FOR SUPPLYING CRYOGENIC REFRIGERATIONDecember 2020February 2024Abandon3811NoNo
17107850APPARATUS AND PROCESS FOR LIQUEFYING GASESNovember 2020August 2021Allow810NoNo
17094518DEVICES, SYSTEMS, FACILITIES, AND PROCESSES FOR LIQUEFIED NATURAL GAS PRODUCTIONNovember 2020July 2023Abandon3261YesNo
17073579SOLID STATE HYDROGEN STORAGE DEVICE INCLUDING PLATE TYPE HEAT EXCHANGEROctober 2020May 2025Abandon5560YesNo
16979648AIR CONDITIONER HAVING HUMIDIFIERSeptember 2020October 2025Allow6031YesNo
16977640REFRIGERATOR AND CONTROL METHOD THEREOFSeptember 2020September 2024Abandon4911NoNo
17007866PROPANE TANK MOUNTING ASSEMBLYAugust 2020March 2022Abandon1831NoNo
17000443METHOD AND SYSTEM FOR TREATING A FLOW BACK FLUID EXITING A WELL SITEAugust 2020January 2023Abandon2901NoNo
16983842ISOLATED GAS COOLING SYSTEM FOR COOLING ELECTRICAL COMPONENTS OF AN ELECTRONIC DISPLAYAugust 2020July 2023Abandon3561YesYes
16966303AIR-CONDITIONING LIGHT-EMITTING SYSTEMJuly 2020June 2025Abandon5940YesNo
16923896PROCESS AND PLANT FOR THE PRODUCTION OF LIQUID HYDROGENJuly 2020February 2023Allow3110YesNo
16958642SYSTEM AND METHOD FOR SUPPLYING BACKUP PRODUCTION IN AIR SEPARATION DEVICEJune 2020July 2024Allow4930YesNo
16958286UTILIZATION OF NITROGEN-ENRICHED STREAMS PRODUCED IN AIR SEPARATION UNITS COMPRISING SPLIT-CORE MAIN HEAT EXCHANGERSJune 2020December 2022Allow3011YesNo
16957015DEVICE AND METHOD FOR PROCESSING BOIL-OFF GAS IN LIQUEFIED GAS REGASIFICATION SYSTEMJune 2020May 2024Abandon4640NoNo
16956755Device and System for Condensing GasJune 2020April 2025Abandon5860NoNo
15929869LIQUID AIR STORAGE DEVICE AND METHOD, AND AIR LIQUEFACTION APPARATUSMay 2020December 2023Abandon4211NoNo
16762365COMPACT POWER PLANTMay 2020May 2022Allow2420NoNo
16759232STERILIZED-LIQUEFIED GAS APPARATUS AND CONNECTIN PIPE THEREOFApril 2020March 2023Abandon3401NoNo
16857190DENSE FLUID RECOVERY AND SUPPLY PRESSURE SENSING SYSTEMApril 2020July 2022Allow2610NoNo
16852920APPARATUS AND METHOD TO IMPROVE VIABILITY AND INTEGRITY OF CRYOPRESERVED CELLS AND TISSUES CONTAINED IN CRYOGENIC FREEZING BAGS DURING STORAGE AND SHIPPINGApril 2020February 2023Abandon3410NoNo
15929245CO2 SEPARATION & LIQUEFACTION SYSTEM AND METHODMarch 2020June 2022Allow2731YesNo
16819055Pressure Vessels And Method Of FabricationMarch 2020July 2021Allow1651YesNo
16811953METHOD FOR PRODUCING A METHANE-RICH STREAM AND A C2+ HYDROCARBON-RICH STREAM, AND ASSOCIATED EQUIPMENTMarch 2020January 2025Abandon5831YesNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner PETTITT, JOHN F.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
19
Examiner Affirmed
12
(63.2%)
Examiner Reversed
7
(36.8%)
Reversal Percentile
58.3%
Higher than average

What This Means

With a 36.8% 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
41
Allowed After Appeal Filing
14
(34.1%)
Not Allowed After Appeal Filing
27
(65.9%)
Filing Benefit Percentile
56.3%
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, 34.1% 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.

Examiner PETTITT, JOHN F - Prosecution Strategy Guide

Executive Summary

Examiner PETTITT, JOHN F works in Art Unit 3763 and has examined 312 patent applications in our dataset. With an allowance rate of 35.6%, this examiner allows applications at a lower rate than most examiners at the USPTO. Applications typically reach final disposition in approximately 43 months.

Allowance Patterns

Examiner PETTITT, JOHN F's allowance rate of 35.6% places them in the 6% 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 PETTITT, JOHN F receive 3.06 office actions before reaching final disposition. This places the examiner in the 88% percentile for office actions issued. This examiner issues more office actions than most examiners, which may indicate thorough examination or difficulty in reaching agreement with applicants.

Prosecution Timeline

The median time to disposition (half-life) for applications examined by PETTITT, JOHN F is 43 months. This places the examiner in the 17% percentile for prosecution speed. Applications take longer to reach final disposition with this examiner compared to most others.

Interview Effectiveness

Conducting an examiner interview provides a +20.2% benefit to allowance rate for applications examined by PETTITT, JOHN F. This interview benefit is in the 64% percentile among all examiners. Recommendation: Interviews provide an above-average benefit with this examiner and are worth considering.

Request for Continued Examination (RCE) Effectiveness

When applicants file an RCE with this examiner, 10.0% of applications are subsequently allowed. This success rate is in the 5% 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 13.3% 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, 36.4% result in withdrawal of the rejection or reopening of prosecution. This success rate is in the 35% percentile among all examiners. Note: Pre-appeal conferences show below-average success with this examiner. Consider whether your arguments are strong enough to warrant a PAC request.

Appeal Withdrawal and Reconsideration

This examiner withdraws rejections or reopens prosecution in 51.3% of appeals filed. This is in the 22% percentile among all examiners. Of these withdrawals, 35.0% occur early in the appeal process (after Notice of Appeal but before Appeal Brief). Strategic Insight: This examiner rarely withdraws rejections during the appeal process compared to other examiners. If you file an appeal, be prepared to fully prosecute it to a PTAB decision. Per MPEP § 1207, the examiner will prepare an Examiner's Answer maintaining the rejections.

Petition Practice

When applicants file petitions regarding this examiner's actions, 81.5% are granted (fully or in part). This grant rate is in the 85% 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 1.6% of allowed cases (in the 72% percentile). This examiner makes examiner's amendments more often than average to place applications in condition for allowance (MPEP § 1302.04).

Quayle Actions: This examiner issues Ex Parte Quayle actions in 3.6% of allowed cases (in the 76% percentile). Per MPEP § 714.14, a Quayle action indicates that all claims are allowable but formal matters remain. This examiner frequently uses Quayle actions compared to other examiners, which is a positive indicator that once substantive issues are resolved, allowance follows quickly.

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.
  • Expect multiple rounds of prosecution: This examiner issues more office actions than average. Address potential issues proactively in your initial response and consider requesting an interview early in prosecution.
  • 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.
  • Plan for extended prosecution: Applications take longer than average with this examiner. Factor this into your continuation strategy and client communications.

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.