USPTO Examiner SUNG GERALD LUTHER - Art Unit 3741

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19074068TURBINE ENGINE WITH A BLADE ASSEMBLY HAVING A SET OF COOLING CONDUITSMarch 2025August 2025Allow500NoNo
19013516ADDITIVELY MANUFACTURED COMBUSTOR LINER V-BAND COOLING RINGJanuary 2025November 2025Allow1010YesNo
19012670MASS PROPELLED DEVICEJanuary 2025August 2025Allow710NoNo
18958264SHIELDED SWIRL GAS TURBINE ENGINE INLET ANTI-ICING SYSTEMNovember 2024May 2025Allow510NoNo
18954263PLASMA INJECTION MODULESNovember 2024December 2025Allow1310NoNo
18883048LOW NOISE TURBINE FOR GEARED TURBOFAN ENGINESeptember 2024August 2025Allow1110NoNo
18736683COMBUSTOR SIZE RATING FOR A GAS TURBINE ENGINE USING HYDROGEN FUELJune 2024February 2026Allow2011YesNo
18675947FUEL SUPPLY DEVICE FOR GAS TURBINE AND METHOD FOR CONTROLLING FUEL SUPPLY DEVICE FOR GAS TURBINEMay 2024September 2025Allow1521YesNo
18673532COMBUSTOR SIZE RATING FOR A GAS TURBINE ENGINE USING HYDROGEN FUELMay 2024May 2025Allow1211YesNo
18673577COMBUSTOR SIZE RATING FOR A GAS TURBINE ENGINE USING HYDROGEN FUELMay 2024July 2025Allow1311YesNo
18673559COMBUSTOR SIZE RATING FOR A GAS TURBINE ENGINE USING HYDROGEN FUELMay 2024June 2025Allow1311YesNo
18673098ROCKET MOTORS AND METHODS OF MANUFACTURING ROCKET MOTORSMay 2024June 2025Allow1311YesNo
18669146ADVANCED ELECTRIC RESISTANCE THERMAL PROPULSION SYSTEMSMay 2024December 2024Allow711YesNo
18660463COMBUSTOR SIZE RATING FOR A GAS TURBINE ENGINE USING HYDROGEN FUELMay 2024April 2025Allow1111YesNo
18660388COMBUSTOR SIZE RATING FOR A GAS TURBINE ENGINE USING HYDROGEN FUELMay 2024January 2026Abandon2021YesNo
18706888POWER PLANT FOR CONTROLLING THE RENEWABLE ENERGY USE IN AN LNG TRAINMay 2024September 2025Allow1720YesNo
18646133NOZZLE ASSEMBLY FOR USE WITH A PROPULSION SYSTEM AND SLEEVE ASSEMBLY FOR USE WITH THE NOZZLE ASSEMBLYApril 2024March 2025Allow1110NoNo
18640743THERMAL RADIATOR SHUTTER AND SYSTEM AND METHOD FOR THERMAL CONTROL USING A THERMAL RADIATOR SHUTTERApril 2024December 2025Allow2000NoNo
18624840REAL-TIME THERMAL COKING SENSORApril 2024May 2025Allow1321YesNo
18600209SYSTEMS AND METHODS FOR INTEGRATING USE OF STARTER ON THE LOW PRESSURE SPOOL OF A TURBINE ENGINEMarch 2024October 2025Allow1920YesNo
18689354ZERO EMISSION SUPERSONIC FAN ENGINEMarch 2024October 2024Allow710YesNo
18586886HEAT EXCHANGERS FOR GAS TURBINE ENGINESFebruary 2024May 2025Allow1511YesNo
18442159COMBUSTOR ASSEMBLY INCLUDING A FUEL INJECTION SYSTEM FOR A TURBOMACHINEFebruary 2024May 2025Allow1510NoNo
18441297MULTI-FUEL COMBUSTION SYSTEMFebruary 2024September 2025Allow1930YesNo
18436826Hybrid Electric Propulsion System with Start Sequence and Shutdown SequenceFebruary 2024October 2024Allow901YesNo
18436954Gas Turbine Engine with Composite Airfoil and Method of FormingFebruary 2024December 2025Allow2211YesNo
18431072INJECTION GRID FOR EXHAUST DUCTFebruary 2024October 2024Allow911YesNo
18418534Fuel Injectors for Multipoint ArraysJanuary 2024July 2025Allow1811YesNo
18410069Eductor Jet EngineJanuary 2024January 2026Abandon2520NoNo
18410663METHODS AND APPARATUS TO REGULATE A GASEOUS FUEL SYSTEMJanuary 2024September 2025Allow2120YesNo
18404322GAS TURBINE ENGINE AND FUEL CELL ASSEMBLYJanuary 2024December 2025Allow2331YesNo
18396195AVIATION TURBOFAN ENGINE AND FAN DUCT NOZZLEDecember 2023December 2024Allow1210NoNo
18393133SYSTEMS AND METHODS FOR POWER PRODUCTION WITH INTEGRATED PRODUCTION OF HYDROGENDecember 2023October 2025Abandon2221NoNo
18569336AIRCRAFT PROPULSION SYSTEM WITH START-UP CONTROL DEVICEDecember 2023December 2025Allow2421YesNo
18523156TURBINE ENGINE INCLUDING AN AIR TURBINE STARTERNovember 2023January 2025Allow1421YesNo
18564685GAS TURBINE COMBUSTORNovember 2023October 2024Allow1110YesNo
18561811TURBOMACHINE COMPRISING A REAR INTEGRATED ELECTRICAL MACHINENovember 2023August 2024Allow910NoNo
18504453SYSTEM AND METHOD FOR PURGING A FUEL MANIFOLD OF A GAS TURBINE ENGINE USING A FLOW DIVIDER ASSEMBLYNovember 2023August 2024Allow910NoNo
18484548AIRCRAFT PROPULSION ASSEMBLY EQUIPPED WITH A THRUST-REVERSING DEVICE COMPRISING AT LEAST ONE INFLATABLE BARRIER, AND AIRCRAFT COMPRISING AT LEAST ONE SUCH PROPULSION ASSEMBLYOctober 2023June 2024Allow810NoNo
18261443HYBRID TURBOFAN ENGINE FOR AN AIRCRAFT, COMPRISING A MOTOR/GENERATOR COOLED BY HEAT PIPESOctober 2023October 2024Allow1520YesNo
18480140SWIVEL LOCKING MECHANISM FOR AIRCRAFT SEATOctober 2023January 2026Allow2810YesNo
18372814GEARED GAS TURBINE ENGINESeptember 2023November 2025Allow2621YesNo
18552431METHOD FOR THE PILOTED START-UP OF A GAS TURBINE OF AN AIRCRAFT, AND CORRESPONDING SYSTEMSeptember 2023March 2026Allow3020NoNo
18368366Fuel Nozzle for an Aircraft EngineSeptember 2023February 2026Allow2920NoNo
18549681FAN MODULE EQUIPPED WITH AN OIL TRANSFER DEVICESeptember 2023July 2024Allow1010NoNo
18459538COMPRESSED N2 FOR ENERGY STORAGESeptember 2023May 2024Allow810YesNo
182402612-STAGE COLD GAS THRUSTERAugust 2023June 2025Allow2210YesNo
18449579IGNITION AND OPERATION OF LIQUID FUEL POWERED ROCKET ENGINEAugust 2023September 2025Allow2511YesNo
18360959MULTI-MODAL GAS-TURBINE ENGINE STARTINGJuly 2023November 2025Allow2820NoNo
18347828MECHANICAL DISCONNECTS FOR PARALLEL POWER LANES IN HYBRID ELECTRIC PROPULSION SYSTEMSJuly 2023December 2025Abandon2931NoYes
18347075PLASMA INJECTION MODULESJuly 2023August 2024Allow1310NoNo
18217830AIRCRAFT PROPULSION SYSTEM ENGINE WITH MULTIPLE INDEPENDENT ROTATING STRUCTURESJuly 2023March 2025Allow2141YesNo
18213823ASSEMBLY FOR A COMPRESSOR SECTION OF A GAS TURBINE ENGINEJune 2023November 2023Allow500NoNo
18040583METHOD AND SYSTEM FOR REGULATING THE THRUST OF AN AIRCRAFT TURBOMACHINEJune 2023August 2024Allow1921NoNo
18210139TORCH IGNITORS WITH GAS ASSIST STARTJune 2023May 2024Allow1111YesNo
18201875LOW NOISE TURBINE FOR GEARED TURBOFAN ENGINEMay 2023September 2024Allow1501YesNo
18254485COMBUSTION MODULE FOR A TURBOMACHINEMay 2023June 2024Allow1210NoNo
18307162NOZZLE ASSEMBLY FOR USE WITH A PROPULSION SYSTEMApril 2023December 2024Allow1920NoNo
18127155Constant Volume Combustor For Gas Turbine EngineMarch 2023December 2024Allow2011NoNo
18123472FUEL LINE SAFETY PROTECTION SYSTEMMarch 2023December 2024Allow2111YesNo
18113139MORPHING STRUCTURES FOR FAN INLET VARIABLE VANESFebruary 2023November 2024Allow2130NoNo
18168947OFFSET CLUTCH MECHANISM FOR ELECTRIC STARTING AND BARRING MOTOR OF A GAS-TURBINE ENGINEFebruary 2023November 2024Allow2111NoNo
18106161FORWARD MOUNTED HYDROGEN STEAM INJECTED AND INTER-COOLED TURBINE ENGINE WITH OCTOPUS DUCTINGFebruary 2023May 2024Allow1510YesNo
18164369ADVANCED MONOPROPELLANT THRUSTERFebruary 2023September 2024Abandon1910NoNo
18161670MULTIPLE TURN REVERSER WITH SIDE TURNING VANESJanuary 2023February 2025Allow2411YesNo
17907743THRUST REVERSER FOR TURBOJET ENGINEJanuary 2023August 2024Allow2210NoNo
18157565GAS TURBINE COMBUSTORJanuary 2023October 2023Allow901NoNo
18002445THRUST REVERSER HAVING THREE GATESDecember 2022October 2024Allow2220YesNo
18057958MULTIPULSE ROCKET MOTOR WITH PRESSURE-EQUALIZING CHANNELSNovember 2022July 2024Abandon2021NoNo
17992800Steam Generation Apparatuses, Processes, and MethodsNovember 2022July 2023Allow700NoNo
17983595SYSTEMS AND METHODS FOR PURGING A FUEL MANIFOLD OF A GAS TURBINE ENGINENovember 2022February 2024Allow1510NoNo
17969179GAS TURBINE ENGINE FRONT SECTIONOctober 2022November 2024Allow2510NoNo
18045857CABIN BLOWER SYSTEMOctober 2022December 2024Allow2711YesNo
17950445ELECTRICAL POWER SYSTEM CONVERTER CONTROLSeptember 2022July 2025Allow3420NoNo
17905644RECUPERATOR FOR A GAS TURBINE ENGINESeptember 2022April 2024Allow1900NoNo
17898728GEARED TURBOFAN ENGINE WITH A HIGH RATIO OF THRUST TO TURBINE VOLUMEAugust 2022April 2024Allow1910YesNo
17904429ENERGY STORAGE PLANT AND PROCESSAugust 2022August 2024Allow2410NoNo
17758650NACELLE AIR OUTLET FOR AIRCRAFT TURBOJET ENGINE COMPRISING A STRAIGHTENING DEVICE FOR FACILITATING A REVERSE THRUST PHASEJuly 2022October 2023Allow1510YesNo
17758037DOOR THRUST REVERSER COMPRISING A DEFLECTOR FOR REDIRECTING AN AIR FLOW IN THE UPSTREAM DIRECTIONJune 2022October 2023Allow1620YesNo
17836510SYSTEM AND METHOD FOR PURGING A FUEL MANIFOLD OF A GAS TURBINE ENGINE USING A FLOW DIVIDER ASSEMBLYJune 2022August 2023Allow1410NoNo
17781936COLD GAS THRUSTER WITH SOLID PROPELLANTJune 2022January 2024Allow2011YesNo
17825381THERMAL RESISTANT AIR CAPMay 2022July 2023Allow1420YesNo
17778217COMPRESSOR SYSTEMMay 2022February 2025Allow3330YesNo
17755552IMPROVED THERMAL PROTECTION DEVICE FOR A NOZZLEMay 2022August 2023Allow1510NoNo
17588650GEARED TURBOFAN ENGINE GEARBOX ARRANGEMENTJanuary 2022April 2024Allow2610NoNo
17571720MULTI CORE GEARED GAS TURBINE ENGINEJanuary 2022July 2023Allow1820YesNo
17617692A COOLING DEVICE FOR A TURBOMACHINE CASINGDecember 2021August 2023Allow2010NoNo
17457559COMBUSTOR SIZE RATING FOR A GAS TURBINE ENGINE USING HYDROGEN FUELDecember 2021May 2024Allow2910YesNo
17538048GEARED GAS TURBINE ENGINE ARRANGEMENT WITH CORE SPLIT POWER RATIONovember 2021November 2022Allow1110NoNo
17613861PRE-VAPORIZING PIPE, COMBUSTION ASSEMBLY PROVIDED THEREWITH AND TURBOMACHINE PROVIDED THEREWITHNovember 2021November 2023Allow2320NoNo
17527542GAS TURBINE ENGINE FRONT SECTIONNovember 2021February 2024Allow2710NoNo
17527938CLOSED CYCLE INVENTORY CONTROLNovember 2021March 2026Abandon5251NoNo
17454691ELECTROCHEMICAL ROCKET MOTORNovember 2021April 2024Allow3001YesNo
17509694POWERTRAIN CONTROL SYSTEM AND METHOD OF VTOL AERIAL VEHICLEOctober 2021November 2023Allow2411YesNo
17499527FUEL INJECTORS WITH TORCH IGNITORSOctober 2021May 2023Allow1910NoNo
17499634PROPULSION SYSTEM FOR SATELLITESOctober 2021May 2024Abandon3101NoNo
17479200SYSTEM AND METHOD FOR NON-MODEL BASED CONTROL UTILIZING TURBINE EXIT MACH NUMBER SURROGATESeptember 2021April 2024Allow3121YesNo
17466248PROPULSION SYSTEM WITH SINGLE INITIATOR FOR MULTIPLE ROCKET MOTORSSeptember 2021January 2023Allow1720YesNo
17398643GAS TURBINE ENGINE SYSTEM WITH MOTOR-GENERATORAugust 2021April 2024Allow3211YesNo
17396050MORPHING STRUCTURES FOR FAN INLET VARIABLE VANESAugust 2021February 2023Allow1820NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner SUNG, GERALD LUTHER.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
31
Examiner Affirmed
15
(48.4%)
Examiner Reversed
16
(51.6%)
Reversal Percentile
79.9%
Higher than average

What This Means

With a 51.6% 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
18
(31.6%)
Not Allowed After Appeal Filing
39
(68.4%)
Filing Benefit Percentile
48.6%
Lower 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, 31.6% of applications that filed an appeal were subsequently allowed. This appeal filing benefit rate is below the USPTO average, suggesting that filing an appeal has limited effectiveness in prompting favorable 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 shows limited benefit. Consider other strategies like interviews or amendments before appealing.

Examiner SUNG, GERALD LUTHER - Prosecution Strategy Guide

Executive Summary

Examiner SUNG, GERALD LUTHER works in Art Unit 3741 and has examined 833 patent applications in our dataset. With an allowance rate of 79.7%, this examiner has a below-average tendency to allow applications. Applications typically reach final disposition in approximately 39 months.

Allowance Patterns

Examiner SUNG, GERALD LUTHER's allowance rate of 79.7% places them in the 49% percentile among all USPTO examiners. This examiner has a below-average tendency to allow applications.

Office Action Patterns

On average, applications examined by SUNG, GERALD LUTHER receive 1.90 office actions before reaching final disposition. This places the examiner in the 46% 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 SUNG, GERALD LUTHER is 39 months. This places the examiner in the 28% percentile for prosecution speed. Prosecution timelines are slightly slower than average with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a +30.2% benefit to allowance rate for applications examined by SUNG, GERALD LUTHER. This interview benefit is in the 78% 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, 34.0% of applications are subsequently allowed. This success rate is in the 75% 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 32.6% of cases where such amendments are filed. This entry rate is in the 48% 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, 44.4% result in withdrawal of the rejection or reopening of prosecution. This success rate is in the 41% 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 51.6% of appeals filed. This is in the 22% percentile among all examiners. Of these withdrawals, 30.3% 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, 55.6% are granted (fully or in part). This grant rate is in the 57% percentile among all examiners. Strategic Note: Petitions show above-average success regarding this examiner's actions. Petitionable matters include restriction requirements (MPEP § 1002.02(c)(2)) and various procedural issues.

Examiner Cooperation and Flexibility

Examiner's Amendments: This examiner makes examiner's amendments in 7.1% of allowed cases (in the 89% 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 8.7% of allowed cases (in the 87% 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:

  • 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.
  • 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.