USPTO Examiner KIM CRAIG SANG - Art Unit 3741

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19228387GEARBOX ASSEMBLY WITH LUBRICANT EXTRACTION VOLUME RATIOJune 2025March 2026Allow910NoNo
19193186GAS TURBINE ENGINE AND FUEL NOZZLE THEREFORApril 2025July 2025Allow300NoNo
19190683GAS DISTRIBUTOR FOR ELECTRIC PROPULSION SYSTEMSApril 2025November 2025Allow710NoNo
19065689WORKING FLUID SYSTEM FOR AIRCRAFT POWERPLANTFebruary 2025October 2025Allow810NoNo
18869851ENGINE ARRANGEMENT FOR AN AIRCRAFT, AND AIRCRAFTFebruary 2025February 2026Allow1420NoNo
19060161TURBINE ENGINE AIRFOILFebruary 2025February 2026Allow1210NoNo
19041520GAS TURBINE ENGINE HAVING A HEAT EXCHANGER LOCATED IN AN ANNULAR DUCTJanuary 2025March 2026Allow1320NoNo
19028840GAS TURBINE FACILITY AND METHOD FOR SUPPRESSING DISCHARGE OF AMMONIA FROM GAS TURBINE FACILITYJanuary 2025October 2025Allow910YesNo
19014772AIRCRAFT ENGINE AUXILIARY OIL SYSTEMJanuary 2025September 2025Allow910NoNo
19007701COMBUSTION SECTION FOR A TURBINE ENGINEJanuary 2025September 2025Allow910NoNo
19007487DETACHABLE STRUT STRUCTURE IN COMBUSTION CHAMBER OF SCRAMJET-OBLIQUE DETONATION ENGINEJanuary 2025June 2025Allow600NoNo
18990706GEARBOX ASSEMBLY WITH LUBRICANT EXTRACTION VOLUME RATIODecember 2024February 2025Allow200NoNo
18990439REVERSE FLOW GAS TURBINE ENGINE HAVING ELECTRIC MACHINEDecember 2024August 2025Allow710NoNo
18990685GEARBOX ASSEMBLY WITH LUBRICANT EXTRACTION VOLUME RATIODecember 2024June 2025Allow510YesNo
18985241FLAME PROTECTION SEALS FOR GAS TURBINE ENGINESDecember 2024September 2025Allow900NoNo
18973680REVERSE FLOW GAS TURBINE ENGINE HAVING ELECTRIC MACHINEDecember 2024November 2025Allow1120YesNo
18969808OPERATING A GAS TURBINE ENGINEDecember 2024February 2026Allow1420YesNo
18935194METHODS AND APPARATUS FOR ANTI-ICE HEAT SUPPLY FROM WASTE HEAT RECOVERY SYSTEMSNovember 2024May 2025Allow610NoNo
18926865REVERSE FLOW GAS TURBINE ENGINE HAVING ELECTRIC MACHINEOctober 2024August 2025Allow910NoNo
18925916REVERSE FLOW GAS TURBINE ENGINE HAVING ELECTRIC MACHINEOctober 2024July 2025Allow810NoNo
18855753SYSTEMS AND METHODS FOR ROCKET PROPULSION INCLUDING ROCKET MOTOR USING POWDER MONOPROPELLANTOctober 2024February 2026Allow1710NoNo
18852382SUSPENSION OF A TRIPLE-FLOW AIRCRAFT TURBINE ENGINESeptember 2024June 2025Allow800NoNo
18850333COMBUSTOR AND GAS TURBINESeptember 2024May 2025Allow800NoNo
18848644COMBUSTOR AND GAS TURBINESeptember 2024January 2026Abandon1610NoNo
18847216PREMIXING APPARATUSSeptember 2024January 2026Abandon1610NoNo
18806506CMC COMPONENT WITH COOLING CAVITYAugust 2024December 2025Allow1620YesNo
18753081FUEL CHARACTERISTICJune 2024April 2025Allow950NoNo
18753092OPERATING A GAS TURBINE ENGINEJune 2024October 2024Allow410NoNo
18739630IGNITION SYSTEM AND METHOD OF OPERATING A COMBUSTION ENGINEJune 2024September 2025Allow1510NoNo
18736927COMBUSTOR FOR A GAS TURBINE ENGINEJune 2024April 2025Allow1000NoNo
18677579GAS TURBINE PLANT WITH AMMONIA DECOMPOSITION SYSTEMMay 2024August 2025Allow1510NoNo
18661107CONTROLLED GAP FUEL NOZZLE HEAT SHIELDMay 2024August 2025Allow1610NoNo
18630587HYDROGEN TURBOEXPANDER FOR USE IN AN AVIATION PROPULSION SYSTEMApril 2024March 2025Allow1100NoNo
18616576PROPULSION ASSEMBLY COMPRISING AT LEAST ONE REGULATED VENTILATION DEVICE, AIRCRAFT COMPRISING SUCH A PROPULSION ASSEMBLYMarch 2024June 2025Allow1420NoNo
18604906GAS TURBINE ENGINE COMBUSTOR HAVING A CERAMIC MATRIX COMPOSITE LINER AND DOMEMarch 2024April 2025Allow1310NoNo
18601959HEAT TRANSFER DEVICE WITH NESTED LAYERS OF HELICAL FLUID CHANNELSMarch 2024January 2025Allow1110NoNo
18601267THRUST REVERSER BLOCKER DOOR WITH FAIRINGMarch 2024February 2025Allow1110NoNo
18598529CONTINUOUS FLOW FUEL SYSTEMMarch 2024September 2025Allow1811YesNo
18594975ENGINE NACELLE ANTI-ICE SWIRL SYSTEM WITH UNSTEADY FLUID FLOWMarch 2024December 2024Allow910YesNo
18436275GAS TURBINE ENGINE HAVING A HEAT EXCHANGER LOCATED IN AN ANNULAR DUCTFebruary 2024July 2025Allow1710NoNo
18434933GAS TURBINE ENGINE HAVING A HEAT EXCHANGER LOCATED IN AN ANNULAR DUCTFebruary 2024August 2025Allow1910NoNo
18434047GAS TURBINE ENGINE HAVING A HEAT EXCHANGER LOCATED IN AN ANNULAR DUCTFebruary 2024February 2025Allow1310YesNo
18434128GAS TURBINE ENGINE HAVING A HEAT EXCHANGER LOCATED IN AN ANNULAR DUCTFebruary 2024March 2025Allow1410YesNo
18432315GAS TURBINE ENGINE HAVING A HEAT EXCHANGER LOCATED IN AN ANNULAR DUCTFebruary 2024June 2025Allow1710NoNo
18432285GAS TURBINE ENGINE HAVING A HEAT EXCHANGER LOCATED IN AN ANNULAR DUCTFebruary 2024September 2024Allow810NoNo
18430907GAS TURBINE ENGINE HAVING A HEAT EXCHANGER LOCATED IN AN ANNULAR DUCTFebruary 2024February 2025Allow1310YesNo
18428856LOAD BEARING FEATURE FOR CERAMIC MATRIX COMPOSITE TURBINE COMPONENTSJanuary 2024May 2025Allow1620NoNo
18427532SYSTEMS AND METHODS FOR INTEGRATING AUXILIARY ENERGY AND WASTE HEAT RECOVERY FROM GAS TURBINE ENGINESJanuary 2024July 2025Allow1811NoNo
18425207LINE REPLACEABLE FUEL INJECTOR PANELS WITH SINGLE HATCH INSTALLATIONJanuary 2024March 2025Allow1420NoNo
18424183TRANSFERRING FUEL BETWEEN FUEL RESERVOIRS OF AN AIRCRAFT FUEL SYSTEMJanuary 2024May 2025Allow1620NoNo
18420204Gas Turbine OperationJanuary 2024October 2025Allow2030YesNo
18410641FIRE PREVENTION AND CONTROL SYSTEM FOR RECHARGEABLE BATTERY CABIN OF SHIPJanuary 2024December 2025Allow2310NoNo
18407648WATER PRESSURE AND QUANTITY MONITORING FOR HYDROGEN STEAM INJECTED AND INTER-COOLED TURBINE ENGINEJanuary 2024January 2025Allow1310NoNo
18408240Turbine Engine Gas-Inlet Cooling System and Turbine Engine ApparatusJanuary 2024September 2025Allow2020NoNo
18404083GAS TURBINE ENGINE AND FUEL CELL ASSEMBLYJanuary 2024November 2024Allow1110NoNo
18404364GAS TURBINE ENGINE AND FUEL CELL ASSEMBLYJanuary 2024December 2024Allow1110NoNo
18575948GAS TURBINE FACILITY AND METHOD FOR SUPPRESSING DISCHARGE OF AMMONIA FROM GAS TURBINE FACILITYJanuary 2024October 2024Allow900NoNo
18394655VARIABLE AREA NOZZLE ASSEMBLY FOR AN AIRCRAFT PROPULSION SYSTEMDecember 2023June 2024Allow500NoNo
18540064MULTI-VOLUME ACOUSTIC RESONATOR FOR ROCKET ENGINEDecember 2023July 2024Allow700NoNo
18525046BLEED VALVE ASSEMBLY FOR AIRCRAFT ENGINESNovember 2023October 2024Allow1010NoNo
18523042AUXILIARY POWER SYSTEMNovember 2023January 2025Allow1410NoNo
18522393HYBRID AIRCRAFT POWER PLANTNovember 2023November 2024Allow1110NoNo
18518811GAS TURBINE COMBUSTORNovember 2023August 2024Allow910NoNo
18515074TORCH ACTIVE CONTROL SYSTEMNovember 2023October 2024Allow1110NoNo
18560510THRUST REVERSER WITH CASCADES OF MOBILE VANES, COMPRISING A REAR STRUCTURE SUPPORTING THE CASCADES OF VANES AND INCORPORATING AN ACOUSTIC FUNCTIONNovember 2023August 2024Allow920NoNo
18503751COMBUSTOR FOR A GAS TURBINE ENGINENovember 2023April 2024Allow500NoNo
18494181EXHAUST NOZZLE ASSEMBLY, PROPULSION SYSTEM EMPLOYING THE EXHAUST NOZZLE ASSEMBLY, AND AIRCRAFT EMPLOYING THE PROPULSION SYSTEMOctober 2023November 2024Allow1310NoNo
18377406MAIN MIXER IN AN AXIAL STAGED COMBUSTOR FOR A GAS TURBINE ENGINEOctober 2023April 2025Allow1820NoNo
18469251METHOD OF CONTROLLING A DEVICE FOR SUPPLYING A PROPULSION SYSTEM OF AN AIRCRAFT AND SUPPLY DEVICE ENABLING EXECUTION OF THAT METHODSeptember 2023May 2025Abandon2020NoNo
18367302FUEL CONTAINMENT STRUCTURE FOR ENGINE FUEL DELIVERY SYSTEMSeptember 2023May 2024Allow800NoNo
18244780GAS TURBINE ENGINESeptember 2023July 2024Allow1010NoNo
18463793TURBINE ENGINE HAVING A BLEED SYSTEMSeptember 2023September 2024Allow1210NoNo
18241693THERMAL ANTI-ICING SYSTEM FOR AN AIRCRAFT PROPULSION SYSTEMSeptember 2023July 2025Allow2230YesNo
18239459SYSTEMS AND METHOD FOR DETECTING AND RESPONDING TO ICING CONDITIONS IN GAS TURBINE ENGINESAugust 2023July 2024Allow1110NoNo
18454160HEAT EXCHANGER DIFFERENTIAL OIL TEMPERATURE DETERMINATIONAugust 2023December 2024Allow1510NoNo
18452203TURBINE ENGINE WITH FAN BYPASS WATER INJECTION TO AUGMENT THRUSTAugust 2023August 2024Allow1210NoNo
18233607THERMAL MANAGEMENT SYSTEM FOR AN AIRCRAFTAugust 2023March 2025Allow1910YesNo
18233502THERMAL MANAGEMENT SYSTEM FOR AN AIRCRAFTAugust 2023March 2025Allow1910NoNo
18446532TRAILING EDGE COOLING CIRCUITAugust 2023February 2025Allow1820NoNo
18228424TRANSMISSION ASSEMBLY FOR AN AIRCRAFT ENGINE ASSEMBLY AND ARCHITECTURE FOR CONTROLLING SAMEJuly 2023July 2024Allow1210YesNo
18360935TURBINE ENGINE INCLUDING AN ENGINE STARTER ASSEMBLYJuly 2023March 2025Allow2020YesNo
18360933ELECTRIC STARTER VERIFICATION DURING GAS-TURBINE ENGINE BARRINGJuly 2023August 2024Allow1310NoNo
18225066PROPULSION SYSTEM, INERTIA ATTENUATOR AND FORCE FIELD GENERATORJuly 2023December 2025Abandon2830YesNo
18224430AIRCRAFT PROPULSION SYSTEM WITH INLET AIR MONITORING SYSTEM AND METHODJuly 2023November 2024Allow1610NoNo
18337749GAS TURBINE OPERATIONJune 2023November 2023Allow510YesNo
18211092GAS TURBINE ENGINE WITH WATER RECOVERY SYSTEMJune 2023June 2025Allow2440YesNo
18211083GAS TURBINE ENGINE WITH HYDROGEN FUEL SYSTEMJune 2023October 2024Allow1620NoNo
18334009GAS TURBINE ENGINE WITH AIR/OIL COOLER HAVING AN AIRFLOW CONTROL BAFFLEJune 2023January 2024Allow800NoNo
18039800METHOD FOR PRODUCING ELECTRICAL AND/OR MECHANICAL ENERGY FOR A CONSUMER SYSTEM AND ASSOCIATED PRODUCTION SYSTEMJune 2023January 2025Allow2020YesNo
18202727SELECTIVE POWER DISTRIBUTION FOR AN AIRCRAFT PROPULSION SYSTEMMay 2023May 2024Allow1210NoNo
18318460JET PUMP SYSTEMMay 2023October 2024Allow1710YesNo
18316505HYDROGEN FUELED TURBINE ENGINE PINCH POINT WATER SEPARATORMay 2023July 2024Allow1410NoNo
18140708RETAINER AND METHOD FOR DISASSEMBLING AN AIRCRAFT ENGINEApril 2023November 2024Allow1811NoNo
18307938REVERSE FLOW GAS TURBINE ENGINE HAVING ELECTRIC MACHINEApril 2023September 2023Allow500NoNo
18250964TURBOMACHINE TURBINE ASSEMBLYApril 2023September 2024Allow1620YesNo
18138508PLANETARY GEARBOX FOR GAS TURBINE ENGINEApril 2023July 2024Allow1520NoNo
18186159Plasma Ignition and Combustion Assist System for Gas Turbine EnginesMarch 2023November 2024Allow2010YesNo
18186161Plasma Ignition and Combustion Assist System for Gas Turbine EnginesMarch 2023April 2024Allow1310NoNo
18184755AIRCRAFT ENGINE FLUID SYSTEM WITH SHUT-OFF VALVEMarch 2023April 2024Allow1310NoNo
18183758INTEGRAL ENGINE INLET FRAME AIR-COOLED OIL COOLING APPARATUSMarch 2023October 2024Allow1920YesNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner KIM, CRAIG SANG.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
20
Examiner Affirmed
9
(45.0%)
Examiner Reversed
11
(55.0%)
Reversal Percentile
81.1%
Higher than average

What This Means

With a 55.0% 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
57
Allowed After Appeal Filing
31
(54.4%)
Not Allowed After Appeal Filing
26
(45.6%)
Filing Benefit Percentile
86.1%
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, 54.4% 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 KIM, CRAIG SANG - Prosecution Strategy Guide

Executive Summary

Examiner KIM, CRAIG SANG works in Art Unit 3741 and has examined 759 patent applications in our dataset. With an allowance rate of 86.4%, this examiner has an above-average tendency to allow applications. Applications typically reach final disposition in approximately 37 months.

Allowance Patterns

Examiner KIM, CRAIG SANG's allowance rate of 86.4% places them in the 64% percentile among all USPTO examiners. This examiner has an above-average tendency to allow applications.

Office Action Patterns

On average, applications examined by KIM, CRAIG SANG receive 1.71 office actions before reaching final disposition. This places the examiner in the 36% percentile for office actions issued. This examiner issues fewer office actions than average, which may indicate efficient prosecution or a more lenient examination style.

Prosecution Timeline

The median time to disposition (half-life) for applications examined by KIM, CRAIG SANG is 37 months. This places the examiner in the 34% percentile for prosecution speed. Prosecution timelines are slightly slower than average with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a +12.5% benefit to allowance rate for applications examined by KIM, CRAIG SANG. This interview benefit is in the 49% 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, 33.8% of applications are subsequently allowed. This success rate is in the 74% percentile among all examiners. Strategic Insight: RCEs show above-average effectiveness with this examiner. Consider whether your amendments or new arguments are strong enough to warrant an RCE versus filing a continuation.

After-Final Amendment Practice

This examiner enters after-final amendments leading to allowance in 33.8% of cases where such amendments are filed. This entry rate is in the 50% percentile among all examiners. Strategic Recommendation: This examiner shows above-average receptiveness to after-final amendments. If your amendments clearly overcome the rejections and do not raise new issues, consider filing after-final amendments before resorting to an RCE.

Pre-Appeal Conference Effectiveness

When applicants request a pre-appeal conference (PAC) with this examiner, 58.8% result in withdrawal of the rejection or reopening of prosecution. This success rate is in the 50% 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 70.6% of appeals filed. This is in the 57% percentile among all examiners. Of these withdrawals, 33.3% occur early in the appeal process (after Notice of Appeal but before Appeal Brief). Strategic Insight: This examiner shows above-average willingness to reconsider rejections during appeals. The mandatory appeal conference (MPEP § 1207.01) provides an opportunity for reconsideration.

Petition Practice

When applicants file petitions regarding this examiner's actions, 38.5% are granted (fully or in part). This grant rate is in the 27% percentile among all examiners. Strategic Note: Petitions show below-average success regarding this examiner's actions. Ensure you have a strong procedural basis before filing.

Examiner Cooperation and Flexibility

Examiner's Amendments: This examiner makes examiner's amendments in 6.5% of allowed cases (in the 88% percentile). Per MPEP § 1302.04, examiner's amendments are used to place applications in condition for allowance when only minor changes are needed. This examiner frequently uses this tool compared to other examiners, indicating a cooperative approach to getting applications allowed. Strategic Insight: If you are close to allowance but minor claim amendments are needed, this examiner may be willing to make an examiner's amendment rather than requiring another round of prosecution.

Quayle Actions: This examiner issues Ex Parte Quayle actions in 0.3% of allowed cases (in the 53% percentile). This examiner issues Quayle actions more often than average when claims are allowable but formal matters remain (MPEP § 714.14).

Prosecution Strategy Recommendations

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

  • Examiner cooperation: This examiner frequently makes examiner's amendments to place applications in condition for allowance. If you are close to allowance, the examiner may help finalize the claims.

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.