USPTO Examiner NGUYEN HOANG M - Art Unit 3746

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19136060HOT AIR ENGINEJune 2025February 2026Allow900NoNo
19208674SOLAR ENERGY SYSTEM WITH RANKINE CYCLEMay 2025July 2025Allow210NoNo
19208665RANKINE ENERGY SYSTEM BASED ON SOLAR POWERMay 2025July 2025Allow210NoNo
19201398Organic Rankine Cycle Decompression Heat EngineMay 2025October 2025Allow510YesNo
19190856SOLAR POWER ENERGY SYSTEM WITH RANKINE ENGINEApril 2025July 2025Allow210NoNo
19185573METHOD FOR GENERATING ELECTRICITY WITH SOLAR HEAT PIPE ABSORBERApril 2025July 2025Allow310NoNo
19184093STEAM POWER CYCLE THERMOELECTRIC DECOUPLING SYSTEM, AND CONTROL METHOD, DEVICE, MEDIUM, AND PRODUCT THEREOFApril 2025June 2025Allow200NoNo
19171727SYSTEMS AND METHODS FOR DETECTING DEGRADATION OF CATALYST MEMBERS OF AN AFTERTREATMENT SYSTEMApril 2025February 2026Allow1000NoNo
19089884EXHAUST AFTERTREATMENT UNITMarch 2025February 2026Allow1000NoNo
19102299TANGENTIAL INTERNAL COMBUSTION ENGINEFebruary 2025February 2026Allow1200NoNo
19036900AMBIENT TEMPERATURE THERMAL ADAPTER FOR SUPERCRITICAL CARBON DIOXIDE POWER CYCLEJanuary 2025March 2026Allow1410NoNo
19028879FLUID COMPRESSION APPARATUS AND METHODJanuary 2025August 2025Allow710NoNo
19029489Combined Power Generation using Geothermal and Solar EnergyJanuary 2025February 2026Allow1310NoNo
19025071COMBINED CYCLE POWER GENERATION FACILITYJanuary 2025February 2026Allow1310NoNo
19019254HEAT PUMP ENGINEJanuary 2025January 2026Allow1210NoNo
19014594MULTI-PARAMETER INTEGRATED TEST SYSTEM FOR DEEP GEOTHERMAL IN-SITU POWER GENERATIONJanuary 2025March 2025Allow200NoNo
18985537HYDRAULIC DEVICE FOR A PITCH SYSTEM, A PITCH SYSTEM AND WIND TURBINEDecember 2024December 2025Allow1200YesNo
18976266PRESSURE-REGULATING HYDRODYNAMIC PUMP AND WAVE ENGINEDecember 2024October 2025Allow1010NoNo
18967499PRESSURE-REGULATING HYDRODYNAMIC PUMP AND WAVE ENGINE WITH ENERGY PRODUCT GENERATION AND TRANSPORTDecember 2024May 2025Allow510YesNo
18868237METHOD FOR STORING COMPRESSED AIR ENERGYNovember 2024September 2025Allow1000NoNo
18953739CENTRIFUGAL COMPRESSORNovember 2024May 2025Allow500NoNo
18867137GEOTHERMAL POWER GENERATION SYSTEMS WITH PRESSURE EXCHANGERSNovember 2024January 2026Allow1410YesNo
18949922METHOD AND SYSTEMS FOR FREE-FLOATING NAUTICAL STATIONKEEPINGNovember 2024November 2025Allow1210NoNo
18943418EXHAUST GAS TEMPERATURE CONTROLNovember 2024July 2025Allow800NoNo
18939376AIR COMPRESSORNovember 2024November 2025Allow1200NoNo
18938072SYSTEMS AND METHODS FOR CARBON DIOXIDE-BASED ENERGY STORAGE AND POWER GENERATIONNovember 2024October 2025Allow1220NoNo
18929777ACTUATION APPARATUS AND ACTUATION METHODOctober 2024June 2025Allow810NoNo
18929918ACTUATION APPARATUS AND ELECTRONIC PRODUCTOctober 2024March 2025Allow400NoNo
18927999Pump Assembly and Proportioning MachineOctober 2024August 2025Allow900NoNo
18921278PUMPED HEAT ENERGY STORAGE SYSTEM WITH LOAD FOLLOWINGOctober 2024June 2025Allow710NoNo
18920128COMPRESSOR TRAIN FOR CHEMICAL PLANTOctober 2024June 2025Allow810NoNo
18918716SOFT ACTUATOR FIXING METHOD AND SOFT ACTUATOR DEVICEOctober 2024October 2025Allow1220YesNo
18913979THERMAL ENERGY STORAGE SYSTEM WITH A HEAT PUMP FOR IMPROVED EFFICIENCYOctober 2024February 2026Allow1610NoNo
18909497LIQUID INFUSION DEVICE EQUIPPED WITH A MAGNETIC RETURN-TO-ORIGIN AND FIXATION MEANSOctober 2024August 2025Allow1110NoNo
18854144BATTERY OPERATED MOLTEN METAL PUMPOctober 2024March 2026Allow1710NoNo
18906902CHECK VALVE FOR RAT RE-STOW PUMPOctober 2024October 2025Allow1210NoNo
18829136PASSIVE CONTROL SYSTEM FOR AN EVERTING SHEATHSeptember 2024November 2025Allow1400NoNo
18844709SEALED COMPRESSORSeptember 2024January 2026Allow1610YesNo
18842336APPARATUS FOR ENERGY CONVERSIONAugust 2024November 2025Allow1510NoNo
18815663SYSTEMS AND METHODS FOR PRODUCING CLEAN ENERGYAugust 2024February 2025Allow510NoNo
18804191RENEWABLE GEOTHERMAL ENERGY HARVESTING FROM OFFSHORE WELLS AND METHODSAugust 2024September 2025Allow1310NoNo
18800475THERMALLY-POWERED POLYMER FIBER ACTUATORS AND ARTICLES INCLUDING SAMEAugust 2024July 2025Allow1110NoNo
18837179METHOD AND IMPROVED DEVICE FOR CONVERTING THERMAL ENERGY INTO KINETIC ENERGYAugust 2024October 2025Allow1410YesNo
18793665SYSTEMS AND METHODS FOR POWER DISTRIBUTION AND HARNESSING OF MARINE HYDROKINETIC ENERGYAugust 2024March 2026Allow1910NoNo
18789987GAS TURBINE ENGINE WITH INERTIALLY DAMPED SEALSJuly 2024May 2025Allow910YesNo
18790958STIRLING ENGINEJuly 2024April 2025Allow810YesNo
18834706HEAT EXCHANGER PROVIDED WITH AN AIR DIFFUSION SYSTEM AND CORRESPONDING TURBOMACHINEJuly 2024June 2025Allow1010NoNo
18256039CONDENSATION SYSTEM AND METHOD FOR ELECTRIC POWER PLANTJuly 2024July 2025Abandon2510NoNo
18833438Vacuum pump and facility for processing and/or packaging food productsJuly 2024October 2025Allow1510NoNo
18783338MAGNETIC SUCTION FANJuly 2024April 2025Allow900NoNo
18771356GEOPRESSURE AND GEOTHERMAL POWER SYSTEMJuly 2024February 2025Allow710NoNo
18721386ACTUATOR ASSEMBLYJune 2024June 2025Allow1110NoNo
18720149POWER GENERATION SYSTEMJune 2024November 2024Allow500NoNo
18743980SYSTEM FOR RESTORATION OF A SALTY BODY OF WATER THAT HARNESSES HYDRO, SOLAR, AND GEOTHERMAL ENERGY, TO BE USED IN REMOTE LOCATIONS AND DIFFERENT APPLICATIONS INCLUDING THE PRODUCTION OF DISTILLED WATER FROM A SALTY BODY OF WATERJune 2024October 2025Allow1720NoNo
18738537EXOTHERMIC REACTION ENERGY SYSTEMJune 2024February 2026Allow2110NoNo
18717624AN ALPHA TYPE STIRLING ENGINEJune 2024September 2025Allow1600NoNo
18735587GeoHeat Harvesting EnhancementJune 2024December 2024Allow620NoNo
18713797A SYSTEM AND A METHOD FOR CONTROLLING THE POWER OUTPUT OF A STIRLING ENGINEMay 2024September 2025Allow1600NoNo
18713701FLUID PRESSURE ACTUATORMay 2024February 2025Allow910NoNo
18711333MITIGATING FLUID LOSS OR INFLOW IN A CLOSED-LOOP GEOTHERMAL SYSTEMMay 2024April 2025Allow1110NoNo
18711182ENGINEMay 2024March 2025Allow1010YesNo
18710119GEOTHERMAL CARBON CAPTURE SYSTEMMay 2024August 2025Allow1600YesNo
18708913SUPERCRITICAL CARBON DIOXIDE REGENERATIVE BRAYTON CYCLE WITH MULTIPLE RECUPERATORS AND AUXILIARY COMPRESSORSMay 2024September 2025Allow1610NoNo
18708219THERMAL OSCILLATION SYSTEMSMay 2024April 2025Allow1110YesNo
18654996SYSTEMS AND METHODS FOR PRODUCING CLEAN ENERGYMay 2024September 2024Allow510NoNo
18704599BUOYANT FORCE UTILIZATION DEVICEApril 2024June 2025Allow1420NoNo
18644239POWER MACHINEApril 2024February 2025Allow900NoNo
18631960Shape Memory Alloy (SMA) Bimorph Actuators With Reduced Wire Exit AngleApril 2024August 2025Allow1630NoNo
18630943REACTIVE BY-PRODUCTS COLLECTION SYSTEMApril 2024April 2025Allow1200NoNo
18698658LNG COLD POWER GENERATION USING MIXED WORKING FLUIDApril 2024January 2026Allow2210NoNo
18625842TURBINE OVERSPEED PROTECTIONApril 2024January 2025Allow910NoNo
18621265Automatic vacuum sealerMarch 2024October 2025Allow1900NoNo
18621750GAS MIXING DEVICE AND MOVING OBJECTMarch 2024November 2024Allow710NoNo
18622374SHIP COGENERATION SYSTEM USING WASTE HEAT OF LNG ENGINE SHIP RECOVERED THROUGH ECONOMIZERMarch 2024November 2025Allow2010NoNo
18614901SYSTEMS FOR GENERATING GEOTHERMAL POWER IN AN ORGANIC RANKINE CYCLE OPERATION DURING HYDROCARBON PRODUCTION BASED ON WELLHEAD FLUID TEMPERATUREMarch 2024September 2024Allow610YesNo
18694323DOWNHOLE HEAT EXCHANGER FOR GEOTHERMAL POWER SYSTEMSMarch 2024June 2025Abandon1510NoNo
18612499COMPRESSION DEVICE AND METHODMarch 2024October 2025Allow1910NoNo
18604755ELECTRIC SUBMERSIBLE PUMP (ESP) SEAL UNITMarch 2024November 2025Allow2010NoNo
18601605MOBILE UNDERWATER POWER GENERATION SYSTEM FOR OCEAN-GOING VESSELMarch 2024July 2025Allow1710NoNo
18601194PUMP CONTROL OF CLOSED CYCLE POWER GENERATION SYSTEMMarch 2024April 2025Abandon1310NoNo
18600578SODIUM-CHLORINE BOILERMarch 2024July 2024Allow400YesNo
18690625SUBMERGED FIN FOR WAVE ENERGY CONVERSIONMarch 2024July 2025Allow1720YesNo
18595679SYSTEMS AND METHODS FOR GENERATION OF ELECTRICAL POWER IN AN ORGANIC RANKINE CYCLE OPERATIONMarch 2024July 2024Allow510NoNo
18594866MOBILE EMERGENCY WATER SUPPLY AND DRAINAGE DEVICEMarch 2024June 2025Allow1500NoNo
18594750ROD PUMP WITH NON-LOCKING ACTUATORMarch 2024September 2025Allow1800NoNo
18586465Thermoelectric Hydro Energy HarvesterFebruary 2024March 2026Allow2410YesNo
18583928Fuel Endothermic Reaction to Cool a LoadFebruary 2024September 2025Allow1910NoNo
18583247GEOTHERMAL SYSTEMS AND METHODS WITH AN UNDERGROUND MAGMA CHAMBERFebruary 2024September 2024Allow710NoNo
18442935FLARE AND GAS POWERED SYSTEMFebruary 2024February 2025Allow1200NoNo
18441405SUB-IDLE HYBRID OPERATION MODE FOR HYBRID ELECTRIC PROPULSION SYSTEMFebruary 2024October 2024Allow810NoNo
18435629AIRCRAFT PROPULSION SYSTEMFebruary 2024November 2025Allow2120NoNo
18682037Rotary-Wing Vehicle, and Rotary-Wing TurbineFebruary 2024March 2025Allow1310NoNo
18682064THERMAL PROCESSES AND SYSTEMS FOR GENERATING ELECTRICITY UTILIZING PREDETERMINED WORKING FLUIDSFebruary 2024February 2025Allow1210NoNo
18435787THERMAL PROCESSES AND SYSTEMS FOR GENERATING ELECTRICITY UTILIZING PREDETERMINED WORKING FLUIDSFebruary 2024March 2025Allow1310NoNo
18435191PREFORM FOR MAKING A CASING STRUCTURE FOR TURBINE ENGINESFebruary 2024September 2024Allow810NoNo
18433239PYROTECHNIC LATCH RETRACTION MECHANISMFebruary 2024May 2024Allow400NoNo
18294910SYSTEMS AND PROCESSES FOR GENERATING ELECTRICITY FROM A GEOTHERMAL ENERGY SOURCE VIA AN INTEGRATED THERMAL POWER PLANTFebruary 2024February 2025Allow1210NoNo
18293411ROTARY ENGINEJanuary 2024October 2025Abandon2010NoNo
18427190Aircraft Propulsion System Air Mover BrakeJanuary 2024September 2024Allow710NoNo
18293721Insulated Welded Joint for Pipe-in-Pipe systemsJanuary 2024January 2026Allow2310NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner NGUYEN, HOANG M.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
8
Examiner Affirmed
4
(50.0%)
Examiner Reversed
4
(50.0%)
Reversal Percentile
78.6%
Higher than average

What This Means

With a 50.0% reversal rate, the PTAB reverses the examiner's rejections in a meaningful percentage of cases. 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
29
Allowed After Appeal Filing
16
(55.2%)
Not Allowed After Appeal Filing
13
(44.8%)
Filing Benefit Percentile
86.5%
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, 55.2% 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 NGUYEN, HOANG M - Prosecution Strategy Guide

Executive Summary

Examiner NGUYEN, HOANG M works in Art Unit 3746 and has examined 1,095 patent applications in our dataset. With an allowance rate of 94.2%, this examiner allows applications at a higher rate than most examiners at the USPTO. Applications typically reach final disposition in approximately 20 months.

Allowance Patterns

Examiner NGUYEN, HOANG M's allowance rate of 94.2% places them in the 82% 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 NGUYEN, HOANG M receive 1.10 office actions before reaching final disposition. This places the examiner in the 12% percentile for office actions issued. This examiner issues significantly fewer office actions than most examiners.

Prosecution Timeline

The median time to disposition (half-life) for applications examined by NGUYEN, HOANG M is 20 months. This places the examiner in the 94% percentile for prosecution speed. Applications move through prosecution relatively quickly with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a -1.2% benefit to allowance rate for applications examined by NGUYEN, HOANG M. This interview benefit is in the 10% percentile among all examiners. Note: Interviews show limited statistical benefit with this examiner compared to others, though they may still be valuable for clarifying issues.

Request for Continued Examination (RCE) Effectiveness

When applicants file an RCE with this examiner, 36.5% of applications are subsequently allowed. This success rate is in the 83% percentile among all examiners. Strategic Insight: RCEs are highly effective with this examiner compared to others. If you receive a final rejection, filing an RCE with substantive amendments or arguments has a strong likelihood of success.

After-Final Amendment Practice

This examiner enters after-final amendments leading to allowance in 63.3% of cases where such amendments are filed. This entry rate is in the 88% percentile among all examiners. Strategic Recommendation: This examiner is highly receptive to after-final amendments compared to other examiners. Per MPEP § 714.12, after-final amendments may be entered "under justifiable circumstances." Consider filing after-final amendments with a clear showing of allowability rather than immediately filing an RCE, as this examiner frequently enters such amendments.

Pre-Appeal Conference Effectiveness

When applicants request a pre-appeal conference (PAC) with this examiner, 120.0% result in withdrawal of the rejection or reopening of prosecution. This success rate is in the 83% 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 75.0% of appeals filed. This is in the 66% percentile among all examiners. Of these withdrawals, 50.0% 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, 45.0% are granted (fully or in part). This grant rate is in the 39% 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 4.3% of allowed cases (in the 84% 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 5.0% of allowed cases (in the 80% 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:

  • Consider after-final amendments: This examiner frequently enters after-final amendments. If you can clearly overcome rejections with claim amendments, file an after-final amendment before resorting to an RCE.
  • RCEs are effective: This examiner has a high allowance rate after RCE compared to others. If you receive a final rejection and have substantive amendments or arguments, an RCE is likely to be successful.
  • 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.
  • 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.