USPTO Examiner AMPONSAH OSEI K - Art Unit 1752

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19097310Lithium Secondary BatteryApril 2025January 2026Allow1020YesNo
19004117BATTERYDecember 2024December 2025Allow1220YesNo
18813060ANODE, LITHIUM METAL BATTERY INCLUDING THE SAME, AND METHOD OF MANUFACTURING THE LITHIUM METAL BATTERYAugust 2024December 2025Allow1620NoNo
18713296Non-Aqueous Electrolyte and Lithium Secondary Battery Including the SameMay 2024May 2025Allow1230YesNo
18416905NEGATIVE ELECTRODE PLATE, SODIUM ION BATTERY, POWER CONSUMING DEVICE AND USEJanuary 2024March 2026Abandon2540YesNo
18531894ELECTRODE ASSEMBLY AND LITHIUM BATTERY COMPRISING SAMEDecember 2023October 2025Allow2220NoNo
18386651Lithium Secondary BatteryNovember 2023February 2026Allow2820YesNo
18552738ELECTROLYTE SYSTEM AND APPLICATION THEREOFSeptember 2023February 2026Abandon2820NoNo
18457507SOFC-CONDUCTIONAugust 2023November 2025Allow2620NoNo
18040094ADDITIVE FOR NON-AQUEOUS ELECTROLYTE, NON-AQUEOUS ELECTROLYTE, AND POWER STORAGE DEVICEJanuary 2023March 2026Abandon3810NoNo
18013295SEPARATOR, LITHIUM SECONDARY BATTERY EMPLOYING SAME, AND METHOD FOR MANUFACTURING SAMEDecember 2022February 2026Abandon3840NoNo
17932596HIGH ENERGY SOLID-STATE BATTERIES AND METHODS OF MAKING THE SAMESeptember 2022March 2026Allow4240YesYes
17814374SULFIDE SOLID ELECTROLYTEJuly 2022September 2025Allow3820YesNo
17858482BIPOLAR IONOMER MEMBRANEJuly 2022September 2025Allow3810NoNo
17809832PRINTED ELECTROCHEMICAL CELLS WITH ZINC SALTS AND METHODS OF FABRICATING THEREOFJune 2022July 2025Allow3641NoNo
17729236POSITIVE ELECTRODE ACTIVE MATERIAL AND MANUFACTURING METHOD OF POSITIVE ELECTRODE ACTIVE MATERIALApril 2022July 2025Allow3940YesYes
17697050STABILIZED SOLID GARNET ELECTROLYTE AND METHODS THEREOFMarch 2022February 2026Allow4730NoYes
17697061STABILIZED SOLID GARNET ELECTROLYTE AND METHODS THEREOFMarch 2022January 2026Allow4621YesNo
17666574POSITIVE ELECTRODE AND ELECTRICITY STORAGE DEVICEFebruary 2022February 2026Allow4830YesNo
17582401NEGATIVE ELECTRODE PLATE, LITHIUM SECONDARY BATTERY, AND APPARATUS CONTAINING SUCH LITHIUM SECONDARY BATTERYJanuary 2022December 2025Allow4740YesNo
17626753RECTANGULAR SECONDARY BATTERYJanuary 2022November 2025Allow4630YesNo
17563500BATTERY MODULE, BATTERY PACK, AND VEHICLEDecember 2021November 2025Allow4730YesNo
17531929MICROPOROUS MEMBRANES, SEPARATORS, LITHIUM BATTERIES, AND RELATED METHODSNovember 2021November 2025Allow4741NoNo
17524385All-Solid-State Battery and Method of Manufacturing the SameNovember 2021December 2025Allow5031YesNo
17521766LITHIUM METAL BATTERYNovember 2021February 2026Abandon5160NoNo
17503846Use of Silicon With Impurities In Silicon-Dominant Anode CellsOctober 2021February 2026Allow5250YesNo
17593862METHOD OF PRODUCING ELECTRODE FOR ELECTROCHEMICAL DEVICE, METHOD OF PRODUCING ELECTROCHEMICAL DEVICE, AND SHAPING MATERIAL FOR ELECTRODESeptember 2021March 2026Allow5350YesNo
17448260EXPLOSIVE ENVIRONMENT NEUTRALIZATION IN CHEMICAL ENERGY STORAGESeptember 2021October 2025Allow4921YesNo
17411706NON-FLAMMABLE ELECTROLYTESAugust 2021January 2026Allow5320NoYes
17238687NOVEL ORGANOBORANES USEFUL AS ELECTROLYTES FOR LITHIUM BATTERIESApril 2021September 2025Allow5321NoNo
17264701POSITIVE ELECTRODE ACTIVE MATERIAL AND MANUFACTURING METHOD OF POSITIVE ELECTRODE ACTIVE MATERIALJanuary 2021December 2025Abandon5930NoNo
17133404ELECTROLYTE COMPOSITIONS FOR LITHIUM ION BATTERIESDecember 2020June 2025Allow5440YesNo
17247142REFORMER-ELECTROLYZER-PURIFIER (REP) ASSEMBLY FOR HYDROGEN PRODUCTION, SYSTEMS INCORPORATING SAME AND METHOD OF PRODUCING HYDROGENDecember 2020September 2025Allow5751YesNo
16957657ELECTROLYTE SOLUTION FOR LITHIUM ION SECONDARY BATTERYJune 2020August 2025Allow6060NoYes
16366493FUEL CELL BATTERYMarch 2019April 2021Allow2520YesNo
16299887SOLID ALKALINE FUEL CELLMarch 2019October 2019Allow810YesNo
16269893FUEL CELL SYSTEM AND CONTROL METHOD THEREOFFebruary 2019August 2020Allow1810NoNo
15554198POSITIVE ELECTRODE ACTIVE SUBSTANCE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, POSITIVE ELECTRODE AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERYAugust 2017October 2018Allow1400NoNo
15661292INTERCHANGEABLE CARRIAGE FOR AN ENERGY STORAGE AND POWER SUPPLY DEVICEJuly 2017March 2020Allow3221YesNo
15546691BATTERY CELL AND BATTERY SYSTEMJuly 2017September 2020Allow3750YesNo
15625476POWER STORAGE DEVICE AND METHOD FOR MANUFACTURING THE SAMEJune 2017October 2018Allow1620NoNo
15474699BATTERIES INCLUDING A FLAT PLATE DESIGNMarch 2017June 2018Allow1520NoNo
15468299Electrochemical Cell, Electrolyte Suitable for the Filling Thereof, Production Method Thereof, and Method for the Operation ThereofMarch 2017October 2025Allow6082NoNo
15220890Exchangeable Electric Vehicle Battery Receptacle, Kiosk, and InfrastructureJuly 2016June 2019Allow3420YesNo
15007484Method for Producing a Fuel Cell and a Fuel Cell SystemJanuary 2016December 2018Allow3420YesNo
14997107Silicon Anode for a Rechargeable BatteryJanuary 2016August 2017Allow1910YesNo
14931896DEVICE AND METHOD FOR SUPPLYING A FUEL CELL BATTERYNovember 2015June 2019Allow4341YesNo
14621091Cost-Effective Solid State Reactive Sintering Method for Protonic Ceramic Fuel CellsFebruary 2015September 2018Allow4331YesNo
14597389ELECTRODE STRUCTURE HAVING ALTERNATING COMPOSITE LAYERSJanuary 2015September 2017Allow3230YesNo
14593797HIGH ENERGY DENSITY SOLID STATE LITHIUM ION BATTERY WITH FAIL-SALEJanuary 2015December 2018Allow4841NoNo
14399492CURRENT COLLECTOR, ELECTRODE STRUCTURE, NONAQUEOUS ELECTROLYTE BATTERY AND ELECTRICAL STORAGE DEVICE, AND METHOD FOR PRODUCING CURRENT COLLECTORNovember 2014June 2017Allow3111YesNo
14523387CELL MODULE ASSEMBLYOctober 2014February 2017Allow2820YesNo
13719089MODULAR AND PORTABLE BATTERY PACK POWER SYSTEMDecember 2012May 2016Allow4121YesNo
13615099RECHARGEABLE BATTERY PACKSeptember 2012November 2015Allow3850YesNo
13600192Materials for Battery Electrolytes and Methods for UseAugust 2012October 2013Allow1421YesNo
13577594FUEL CELL SYSTEMAugust 2012December 2014Allow2830YesNo
13568986SOLID OXIDE FUEL CELL STACKAugust 2012October 2014Allow2630YesNo
13537890ELECTRODE FOR BATTERY, NONAQUEOUS ELECTROLYTE BATTERY, AND BATTERY PACKJune 2012December 2016Allow5460NoNo
13493592DYNAMIC PRESSURE CONTROL IN A BATTERY ASSEMBLYJune 2012November 2015Allow4241YesYes
13489101ELECTRODE MATERIALS FOR ELECTRICAL CELLSJune 2012April 2015Allow3432NoNo
13482301OPTICAL SEMICONDUCTOR AND METHOD FOR PRODUCING THE SAME, OPTICAL SEMICONDUCTOR DEVICE, PHOTOCATALYST, HYDROGEN PRODUCING DEVICE, AND ENERGY SYSTEMMay 2012November 2013Allow1831NoNo
13499801DEVICE FOR ELECTRICALLY INTERCONNECTING CELLS IN A BATTERY PACK BY MEANS OF CELL CONNECTORS AND BATTERY PACK WITH SUCH CELL CONNECTORSMay 2012March 2017Allow6070YesNo
13502401CARBON MATERIAL FOR LITHIUM ION SECONDARY CELL, NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY CELL AND LITHIUM ION SECONDARY CELLApril 2012August 2015Allow4050YesNo
13433189REBALANCING ELECTROLYTES IN REDOX FLOW BATTERY SYSTEMSMarch 2012October 2014Allow3031YesYes
13433045MANUFACTURING METHOD OF ELECTRODE CATALYST LAYER, MEMBRANE ELECTRODE ASSEMBLY USING THE SAME, FUEL CELL USING THE SAME AND COMPLEX PARTICLESMarch 2012October 2016Allow5571NoNo
13088592POWER STORAGE DEVICE AND METHOD FOR MANUFACTURING THE SAMEApril 2011February 2017Allow6071YesNo
12980130APPARATUS AND METHODS FOR CONNECTING FUEL CELLS TO AN EXTERNAL CIRCUITDecember 2010March 2016Allow6081YesNo
12952887THIN FILM BATTERY HAVING IMPROVED EFFICIENCY OF COLLECTING ELECTRIC CURRENTNovember 2010August 2016Allow6060YesNo
12807103Secondary particle and lithium battery including secondary particleAugust 2010August 2015Allow5970YesNo
12739736AUXILIARY POWER UNITMay 2010November 2015Allow6051YesNo
12764457BATTERIES INCLUDING A FLAT PLATE DESIGNApril 2010November 2016Allow6091YesYes
12628022SECONDARY BATTERYNovember 2009March 2015Allow6050NoNo
11587175Fuel Cell and Fuel Cell Use Gas Diffusion ElectrodeOctober 2006May 2017Allow6071YesNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner AMPONSAH, OSEI K.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
1
Examiner Affirmed
0
(0.0%)
Examiner Reversed
1
(100.0%)
Reversal Percentile
92.0%
Higher than average

What This Means

With a 100.0% 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
5
Allowed After Appeal Filing
4
(80.0%)
Not Allowed After Appeal Filing
1
(20.0%)
Filing Benefit Percentile
94.8%
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, 80.0% 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

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 AMPONSAH, OSEI K - Prosecution Strategy Guide

Executive Summary

Examiner AMPONSAH, OSEI K works in Art Unit 1752 and has examined 52 patent applications in our dataset. With an allowance rate of 96.2%, this examiner allows applications at a higher rate than most examiners at the USPTO. Applications typically reach final disposition in approximately 47 months.

Allowance Patterns

Examiner AMPONSAH, OSEI K's allowance rate of 96.2% places them in the 86% percentile among all USPTO examiners. This examiner is more likely to allow applications than most examiners at the USPTO.

Office Action Patterns

On average, applications examined by AMPONSAH, OSEI K receive 3.88 office actions before reaching final disposition. This places the examiner in the 97% 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 AMPONSAH, OSEI K is 47 months. This places the examiner in the 9% 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 +11.8% benefit to allowance rate for applications examined by AMPONSAH, OSEI K. This interview benefit is in the 47% percentile among all examiners. Recommendation: Interviews provide a below-average benefit with this examiner.

Request for Continued Examination (RCE) Effectiveness

When applicants file an RCE with this examiner, 19.2% of applications are subsequently allowed. This success rate is in the 19% 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 31.7% of cases where such amendments are filed. This entry rate is in the 46% percentile among all examiners. Strategic Recommendation: This examiner shows below-average receptiveness to after-final amendments. You may need to file an RCE or appeal rather than relying on after-final amendment entry.

Pre-Appeal Conference Effectiveness

When applicants request a pre-appeal conference (PAC) with this examiner, 100.0% result in withdrawal of the rejection or reopening of prosecution. This success rate is in the 70% percentile among all examiners. Strategic Recommendation: Pre-appeal conferences show above-average effectiveness with this examiner. If you have strong arguments, a PAC request may result in favorable reconsideration.

Appeal Withdrawal and Reconsideration

This examiner withdraws rejections or reopens prosecution in 83.3% of appeals filed. This is in the 76% percentile among all examiners. Of these withdrawals, 60.0% 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, 33.3% are granted (fully or in part). This grant rate is in the 20% percentile among all examiners. Strategic Note: Petitions are rarely granted regarding this examiner's actions compared to other examiners. Ensure you have a strong procedural basis before filing a petition, as the Technology Center Director typically upholds this examiner's decisions.

Examiner Cooperation and Flexibility

Examiner's Amendments: This examiner makes examiner's amendments in 0.0% of allowed cases (in the 6% 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 4.0% of allowed cases (in the 77% 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:

  • 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.
  • 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.
  • 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.