USPTO Examiner LIU HENRY Y - Art Unit 3654

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
18952984Front Derailleur with Integral Cadence SensorNovember 2024January 2025Allow200NoNo
18751993POWER TRANSMISSION BELT WITH CONDUCTIVE RUBBER MIXTURE HAVING GRAPHENEJune 2024May 2025Allow1100NoNo
18751966LUBRICATION SYSTEM FOR A TURBINE ENGINEJune 2024June 2025Allow1200NoNo
18744178CONTINUOUSLY VARIABLE TRANSMISSION CLUTCH WITH MOVABLE SHEAVE ACTUATORJune 2024June 2025Allow1200NoNo
18737337Systems and Methods for Assembling and Repairing ChainsJune 2024August 2024Allow200NoNo
18717042A SPROCKET ASSEMBLY, AND A METHOD FOR ASSEMBLING OR REPLACING SAMEJune 2024June 2025Allow1200NoNo
18732757TRANSMISSION DEVICE AND AGRICULTURAL MACHINE HAVING A TRANSMISSION DEVICEJune 2024June 2025Allow1300NoNo
18732977CVT SPIDER CLUTCH WITH ROLLER SYSTEMJune 2024April 2025Allow1000NoNo
18678959SPROCKETMay 2024June 2025Allow1210NoNo
18713468SPRING STRUCTURE FOR MECHANICAL OIL PUMPMay 2024July 2024Allow200NoNo
18669955RAW EDGE V-BELTMay 2024March 2025Allow1000NoNo
18699413IMPROVED FILTERING PULLEYApril 2024May 2025Allow1300NoNo
18624239DERAILLEUR FOR HUMAN-POWERED VEHICLEApril 2024February 2025Allow1000NoNo
18621431BELT TENSIONING APPARATUS FOR DRIVE MECHANISMSMarch 2024May 2025Allow1320YesNo
18697154Toothed Belt and Manufacturing Method ThereforMarch 2024April 2025Allow1200NoNo
18694014TORSIONAL DAMPERMarch 2024March 2025Allow1200NoNo
18610690ALTERNATORMarch 2024March 2025Allow1101NoNo
18692155COMPRESSOR-OIL RECEIVING DEVICE AND COMPRESSOR SYSTEM HAVING A COMPRESSOR-OIL RECEIVING DEVICE OF THIS TYPEMarch 2024March 2025Allow1200NoNo
18586054DEVICES FOR RETAINING A BICYCLE CHAIN ON A SPROCKETFebruary 2024March 2025Allow1310NoNo
18584714CONTINUOUSLY VARIABLE TRANSMISSIONFebruary 2024November 2024Allow900NoNo
18684873LUBRICANT DISPENSERFebruary 2024June 2025Allow1620NoNo
18429406Belt Pulley AssemblyJanuary 2024April 2025Allow1401NoNo
18422487REAR DERAILLEURJanuary 2024January 2025Allow1200NoNo
18291105ARTIFICIAL VERTEBRAL BODYJanuary 2024May 2025Allow1600NoNo
18415983BELT TENSIONER WITH INTEGRATED IDLER PULLEY FOR AN ENDLESS DRIVE BELT OF AN ENGINEJanuary 2024May 2025Allow1610NoNo
18580326IMPROVED FILTERING PULLEYJanuary 2024February 2025Allow1310NoNo
18408576MINIMUM GRIP SPROCKET DRIVE SYSTEMJanuary 2024November 2024Allow1000NoNo
18576562TEMPERATURE CONTROL DEVICE FOR MACHINE TOOLJanuary 2024February 2025Allow1400NoNo
18392879BICYCLE REAR DERAILLEURDecember 2023December 2024Allow1100NoNo
18545194MULTIPLE SPROCKET ARRANGEMENT AND MODULAR SPROCKET ARRANGEMENT SYSTEMDecember 2023June 2025Allow1810NoNo
18542296COMBINED MACHINE WITH SELECTIVE ACTUATIONDecember 2023November 2024Allow1100NoNo
18537490LUBRICATION SYSTEM FOR A TURBINE ENGINEDecember 2023October 2024Allow1000NoNo
18567373BYPASS FOR PURGING AN OIL CIRCUITDecember 2023April 2025Allow1620NoNo
18567130LUBRICANT BATH STRUCTURE AND ROBOTDecember 2023October 2024Allow1100NoNo
18567126TENSIONER WITH DUAL DAMPING SYSTEM FOR A BELT DRIVEDecember 2023March 2025Allow1520NoNo
18524213ELECTROMECHANICAL REAR DERAILLEUR FOR COAXIAL MOUNTINGNovember 2023February 2025Allow1510NoNo
18523625DRIVEN CLUTCH WITH DUAL HELIX ASSEMBLY FOR CONTINUOUSLY VARIABLE TRANSMISSIONNovember 2023August 2024Allow900NoNo
18563445POWER TRANSMISSION BELTNovember 2023February 2025Allow1510NoNo
18516209OIL FILLER TUBE ASSEMBLY FOR AIRCRAFT ENGINENovember 2023December 2024Allow1200NoNo
18516270FILLER-CAP ACTIVATED VALVE IN FILLER-NECK OIL VENTNovember 2023December 2024Allow1300NoNo
18510642REAR SPROCKET ASSEMBLY AND LOCK DEVICENovember 2023September 2024Allow1010NoNo
18560761LUBRICATION METHOD FOR GEAR DEVICENovember 2023January 2025Allow1511NoNo
18560722IMPROVED FILTERING PULLEYNovember 2023August 2024Allow900NoNo
18560504IMPROVED FILTERING PULLEYNovember 2023December 2024Allow1310NoNo
18290104ANCILLARY UNIT DRIVE FOR A VEHICLENovember 2023December 2024Allow1410NoNo
18505047BICYCLE REAR SPROCKET ASSEMBLYNovember 2023January 2025Allow1410NoNo
18558854BELTNovember 2023April 2024Allow600NoNo
18558575REDUCTION GEAR UNITNovember 2023August 2024Allow900NoNo
18288343Toothed Belt and Belt Transmission MechanismOctober 2023November 2024Allow1200NoNo
18287949TOOTHED BELTOctober 2023October 2024Allow1220NoYes
18489822ELECTRIC DEVICE AND CONTROL SYSTEM OF HUMAN-POWERED VEHICLE AND NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUMOctober 2023October 2024Allow1200NoNo
18489375Electric Motor and Belt Transmission Shaft SystemOctober 2023September 2024Allow1100NoNo
18286860LUBRICATION SYSTEMOctober 2023December 2024Allow1410NoNo
18554968TRANSMISSION WITH RADIALLY INVERTED PULLEYSOctober 2023March 2025Allow1711NoNo
18378340TENSIONEROctober 2023August 2024Allow1100NoNo
18554592VARIABLE STIFFNESS FUNCTION THROUGH A CHECK VALVE IN A HYDRAULICOctober 2023August 2024Allow1000NoNo
18370216CONTINUOUSLY VARIABLE TRANSMISSIONSeptember 2023September 2024Allow1210YesNo
18282840LUBRICATION ATOMIZATION FOR A GAS CYLINDER ARRANGEMENTSeptember 2023June 2024Allow900NoNo
18550021Sectioned Multiple-Step Pulley TransmissionSeptember 2023April 2024Allow800NoNo
18280069CVT PRIMARY CLUTCH FOR OFF-ROAD VEHICLESSeptember 2023August 2024Allow1210NoNo
18548795SPROCKET ASSEMBLYSeptember 2023January 2025Abandon1701NoNo
18240945SELF-ALIGNING POWER TRANSMISSION BELTS AND SYSTEMS INCORPORATING THE SAMEAugust 2023October 2024Allow1310NoNo
18548434VARIABLE TUNE HYDRAULIC TENSIONERAugust 2023June 2024Allow1000NoNo
18457305BICYCLE MOTOR UNIT AND BICYCLE DERAILLEURAugust 2023December 2024Allow1520YesNo
18238755AIRCRAFT HEAT EXCHANGER BYPASS FLOW CONTROL WITH ELECTRIC MOTORAugust 2023June 2024Allow900NoNo
18455794POWER TRANSMISSION DEVICEAugust 2023November 2024Allow1511NoNo
18456391METHODS AND APPARATUS TO MAINTAIN A STATE OF A FLUID IN A SYSTEMAugust 2023July 2024Allow1100NoNo
18547232MACHINE COMPRISING LUBRICATION CHAMBERAugust 2023May 2024Allow900NoNo
18451536DEWATERING APPARATUS, SYSTEMS, AND METHODSAugust 2023April 2024Allow800NoNo
18234729OIL SAFETY CAP SYSTEMAugust 2023April 2024Allow800NoNo
18546722PROGRESSIVE DISTRIBUTORAugust 2023September 2024Allow1310NoNo
18450129BELT DRIVE SYSTEM WITH FORWARD FED TORSIONAL LOAD ADJUSTMENTAugust 2023April 2024Allow800NoNo
18233425SPROCKET AND CHAIN DRIVE SYSTEMAugust 2023April 2024Allow800NoNo
18448052TOOTHED BELTS INCLUDING TEETH WITH ASYMMETRIC PROFILEAugust 2023July 2024Allow1110NoNo
18224350AGRICULTURAL BALER WITH TENSIONING DEVICE FOR A TRACTION DRIVEJuly 2023March 2025Allow2010NoNo
18355287FLYWEIGHTS, CVT CLUTCHES, AND METHODS OF TUNING FLYWEIGHTSJuly 2023April 2024Allow910NoNo
18223258FRONT SPROCKET ASSEMBLY FOR HUMAN-POWERED VEHICLEJuly 2023April 2024Allow900NoNo
18354613CHAIN GUIDE OF BICYCLE DERAILLEURJuly 2023July 2024Allow1210NoNo
18222800VEHICLE DOOR LUBRICANT APPLICATION SYSTEMS AND METHODS OF APPLYING LUBRICANT TO VEHICLE DOORSJuly 2023January 2025Allow1820NoNo
18260994SENSOR ARRANGEMENT STRUCTUREJuly 2023March 2024Allow800NoNo
18218507SYSTEM AND METHOD FOR BICYCLE TRANSMISSIONJuly 2023July 2024Allow1210YesNo
18347294SHIFTING MECHANISMS FOR SPLIT-PULLEY VARIABLE TRANSMISSIONSJuly 2023July 2024Allow1210NoNo
18216551BICYCLE DERAILLEUR STRUCTUREJune 2023February 2024Allow800NoNo
18270414OIL LEVEL SENSOR COVER AND ENGINE COMPRISING SAMEJune 2023March 2024Allow900NoNo
18270007Drive Belts Including Foamed Undercord Layers and Methods of Manufacturing The SameJune 2023January 2025Allow1920NoNo
18270025Drive Belts Including Foamed Undercord Layers and Methods of Manufacturing The SameJune 2023February 2025Allow1921NoNo
18259625TRANSMISSION, METHOD FOR CONTROLLING TRANSMISSION, AND NON-TRANSITORY COMPUTER-READABLE MEDIUMJune 2023October 2024Allow1510NoNo
18213350SPROCKETJune 2023February 2025Allow2030YesNo
18339394CONTROL METHOD AND APPARATUSJune 2023May 2024Allow1010NoNo
18336674LUBRICATION MODULE FOR A TURBOMACHINE LUBRICATION STATIONJune 2023March 2024Allow900NoNo
18256656Transmission Including a Baffle PlateJune 2023January 2025Allow1920NoNo
18326462Separator for Liquid and GasMay 2023March 2024Allow900NoNo
18325859CONTROLLING A TRANSMISSION WITH SEGMENTED WHEELS BY MEANS OF ELECTRONIC CONTROL ELEMENTSMay 2023February 2024Allow900NoNo
18323259POWERTRAIN, VEHICLE, AND MOTOR COOLING METHODMay 2023February 2024Allow900NoNo
18253496IMPROVED FILTERING PULLEYMay 2023August 2024Allow1510NoNo
18319179SELF-CLEANING CONDUITS FOR HYDROCARBON FLUIDSMay 2023February 2024Allow900NoNo
18195163CONTINUOUSLY VARIABLE TRANSMISSION FOR RECREATIONAL VEHICLES AND RELATED COMPONENTSMay 2023February 2025Allow2131NoNo
18144476LINEAR DERAILLEUR MECHANISMMay 2023September 2024Abandon1610NoNo
18308649SUPER CHARGER COMPONENTSApril 2023September 2024Allow1710NoNo
18139203GEAR MOTOR FOR A MOTOR VEHICLE AND MOTOR VEHICLE HAVING A GEAR MOTORApril 2023May 2024Allow1310NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner LIU, HENRY Y.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
24
Examiner Affirmed
12
(50.0%)
Examiner Reversed
12
(50.0%)
Reversal Percentile
76.9%
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
72
Allowed After Appeal Filing
45
(62.5%)
Not Allowed After Appeal Filing
27
(37.5%)
Filing Benefit Percentile
89.9%
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, 62.5% 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 LIU, HENRY Y - Prosecution Strategy Guide

Executive Summary

Examiner LIU, HENRY Y works in Art Unit 3654 and has examined 1,735 patent applications in our dataset. With an allowance rate of 80.6%, this examiner has a below-average tendency to allow applications. Applications typically reach final disposition in approximately 26 months.

Allowance Patterns

Examiner LIU, HENRY Y's allowance rate of 80.6% places them in the 44% percentile among all USPTO examiners. This examiner has a below-average tendency to allow applications.

Office Action Patterns

On average, applications examined by LIU, HENRY Y receive 1.26 office actions before reaching final disposition. This places the examiner in the 23% 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 LIU, HENRY Y is 26 months. This places the examiner in the 63% percentile for prosecution speed. Prosecution timelines are slightly faster than average with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a +9.4% benefit to allowance rate for applications examined by LIU, HENRY Y. This interview benefit is in the 44% 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, 32.9% of applications are subsequently allowed. This success rate is in the 63% 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 31.0% of cases where such amendments are filed. This entry rate is in the 37% 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, 92.9% result in withdrawal of the rejection or reopening of prosecution. This success rate is in the 67% 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 70.4% of appeals filed. This is in the 52% percentile among all examiners. Of these withdrawals, 45.6% 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, 44.0% are granted (fully or in part). This grant rate is in the 48% 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 1.2% of allowed cases (in the 71% 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 0.0% of allowed cases (in the 34% percentile). This examiner issues Quayle actions less often than average. Allowances may come directly without a separate action for formal matters.

Prosecution Strategy Recommendations

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

    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.