USPTO Examiner BUI DUNG H - Art Unit 1773

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
18954882FLAT PUSH HOT CAR FOR FOUNDRY COKE AND ASSOCIATED SYSTEMS AND METHODSNovember 2024May 2025Allow500YesNo
18791747AIR TREATMENT APPARATUSAugust 2024October 2025Allow1500YesNo
18788132AIR FILTERJuly 2024October 2024Allow200YesNo
18728831METHOD FOR ASSEMBLING A BIPOLAR MEMBRANE, BIPOLAR MEMBRANE, AND USE OF SAID BIPOLAR MEMBRANEJuly 2024March 2025Allow810NoNo
18767495SURFACE CLEANING APPARATUSJuly 2024March 2025Allow800YesNo
18764841HAND VACUUM CLEANERJuly 2024September 2025Allow1400YesNo
18734716ROBOTIC VACUUM CLEANER WITH DIRT ENCLOSING MEMBER AND METHOD OF USING THE SAMEJune 2024January 2025Allow800YesNo
18732805SYSTEM AND METHOD FOR PERFORMING SEPARATION AND DEHYDROXYLATION OF FUMED SILICA SOOT PARTICLESJune 2024July 2025Allow1410YesNo
18667610SURFACE CLEANING APPARATUSMay 2024December 2024Allow700YesNo
18663457AIR CLEANER BYPASS ASSEMBLY AND METHOD OF OPERATINGMay 2024March 2025Allow1020YesNo
18659199Debris Management System for Both Positive and Negative Pressure Dust CollectorsMay 2024October 2024Allow520YesNo
18708147SYSTEMS AND METHOD FOR ELIMINATING AIRBORNE CONTAMINANTSMay 2024November 2025Allow1821YesYes
18640881SURFACE CLEANING APPARATUSApril 2024November 2024Allow700YesNo
18597193SURFACE CLEANING APPARATUS WITH AN EXTERNAL DIRT CHAMBERMarch 2024November 2024Allow800YesNo
18581890CYCLONIC AIR TREATMENT MEMBER AND SURFACE CLEANING APPARATUS INCLUDING THE SAMEFebruary 2024January 2025Allow1101YesNo
18439920Particle Discharge Device, Filter Assembly, and MethodFebruary 2024January 2026Abandon2321NoNo
18425403MEMBRANE SEPARATORJanuary 2024March 2026Allow2500NoNo
18417193CHIMNEY FOR IMPACTOR NOZZLES AND INTEGRATED ASSEMBLYJanuary 2024February 2026Abandon2521YesNo
18410528WASTE BAG WITH ABSORBENT DISPERSION SACHETJanuary 2024February 2026Allow2520YesYes
18406921AIR PURIFIERJanuary 2024February 2026Allow2500YesNo
18398356NATURAL GAS SEPARATION DEVICEDecember 2023November 2025Allow2200YesNo
18562671APPARATUS AND PROCESS FOR SEPARATING CARBON AND HYDROGEN IN A HYDROCARBON-CONTAINING GAS MIXTURENovember 2023August 2025Abandon2121YesNo
18500515HIGH-PRESSURE ANNULAR WATER COLLECTOR WITH AXIAL SWIRL VANES FOR AN AIR CYCLE ENVIRONMENTAL CONTROL SYSTEMNovember 2023June 2024Allow700YesNo
18491968APPARATUSES AND PROCESSES FOR DISTILLATION AND DISTILLATION COLUMN ASSEMBLYOctober 2023January 2026Allow2710NoNo
18379378AIR TREATMENT APPARATUSOctober 2023May 2024Allow700YesNo
18485807GAS-LIQUID SEPARATOR ASSEMBLYOctober 2023March 2024Allow510YesNo
18480840DIRECT AIR CAPTURE DEVICE AND CARBON DIOXIDE CAPTURE METHODOctober 2023October 2025Abandon2400NoNo
18370235MULTIUSE HOME STATIONSeptember 2023May 2024Allow800YesNo
18462884AIRFIELD SYSTEMS, DEVICES, AND METHODSSeptember 2023June 2025Allow2111YesNo
18280433A MODULAR CENTRIFUGAL SEPARATOR FOR CLEANING GASSeptember 2023January 2026Allow2910YesNo
18242357SURFACE CLEANING APPARATUS, CYCLONIC AIR TREATMENT MEMBER AND SURFACE CLEANING APPARATUS INCLUDING THE SAMESeptember 2023April 2024Allow700YesNo
18449578TWO-PHASE SEPARATOR DEVICE FOR REMOVING CONDENSATE OR PARTICULATE FROM A GAS STREAMAugust 2023February 2026Allow3031YesNo
18448963PARTICLE REMOVER AND METHODAugust 2023October 2024Allow1410NoNo
18364371APPARATUS FOR COLLECTING BY-PRODUCT FOR SEMICONDUCTOR MANUFACTURING PROCESS WITH IMPROVED COLLECTION SPACE EFFICIENCYAugust 2023September 2025Allow2500YesNo
18226029AIR TREATMENT APPARATUSJuly 2023February 2024Allow700YesNo
18225641SURFACE CLEANING APPARATUSJuly 2023February 2024Allow700YesNo
18261756GAS COOLERJuly 2023January 2026Allow3010YesNo
18221576AIR CLEANERJuly 2023January 2026Allow3010NoNo
18220167SURFACE CLEANING APPARATUSJuly 2023January 2024Allow600YesNo
18217300DEBRIS-COLLECTING APPARATUS AND METHOD OF COLLECTING DEBRISJune 2023December 2024Abandon1710NoNo
18213644Mobile Purification Device Having Heated Filter for Killing Biological Species, Including COVID-19June 2023January 2025Allow1920NoNo
18268019GAS-LIQUID SEPARATORJune 2023March 2026Allow3320YesNo
18266315THERMALLY CROSSLINKED POLYTRIAZOLE SEPARATION MEMBRANESJune 2023February 2026Abandon3310NoNo
18203440DUAL PRE-CLEANER AIR FILTER DESIGNMay 2023February 2026Allow3320YesNo
18323801RADIALLY ORIENTED, MODULAR PRE-CLEANER SYSTEMMay 2023February 2026Abandon3310NoNo
18037985Compact canister of the bed of carbon dioxide absorbent (scrubber)May 2023July 2025Allow2600YesNo
18319587METHODS AND SYSTEMS FOR NEGATIVE ION-BASED AND RADIATION-BASED POLLUTION REDUCTIONMay 2023March 2026Allow3411NoNo
18315234SURFACE CLEANING APPARATUS WITH AN EXTERNAL DIRT CHAMBERMay 2023December 2023Allow700YesNo
18312165AIR CLEANER AND METHOD FOR CONTROLLING THE AIR CLEANERMay 2023November 2025Allow3010NoNo
18140455SEPARATOR FOR A MULTI-PHASE FLOWApril 2023March 2026Allow3520YesNo
18139767INTEGRATED MANIFOLD FOR PRE-CLEANER DUST REMOVALApril 2023October 2025Allow2910YesNo
18306288AIR PURIFIER WITH LIGHT-DEFLECTING STRUCTUREApril 2023August 2025Allow2701YesNo
18136847FOOD PROCESSOR AND EXTRACTOR MODULEApril 2023March 2026Allow3511YesNo
18302501LOW-GRAVITY WATER CAPTURE DEVICE WITH WATER STABILIZATIONApril 2023June 2024Allow1410NoNo
18302404AIR TREATMENT APPARATUSApril 2023August 2024Abandon1610YesNo
18298853Filter for a Plasma PlumeApril 2023March 2025Allow2320YesNo
18298951SURFACE CLEANING APPARATUSApril 2023November 2023Allow700YesNo
18248597GAS-LIQUID SEPARATORApril 2023March 2026Allow3520YesNo
18133495SYSTEMS AND METHODS FOR SEPARATING A MIXTURE OF COMPRESSED-GAS SOLVENTSApril 2023July 2024Allow1511YesNo
18298644TEMPERATURE CONTROLLED EXHAUST STREAM WATER FILTER FOR COFFEE ROASTERSApril 2023May 2025Allow2500YesNo
18031025Water separator intended to be integrated into a hydrogen motor of a vehicleApril 2023November 2025Allow3110NoNo
18192358MEASUREMENT OF IRON IN GLYCOL AND AMINE IN NATURAL GAS PROCESSINGMarch 2023May 2025Allow2600YesNo
18125000CYCLONIC AIR TREATMENT MEMBER AND SURFACE CLEANING APPARATUS INCLUDING THE SAMEMarch 2023November 2023Allow800YesNo
18188130Uniflow Cyclone Separator with Stable Vortex and Tangential Heavy Phase ExtractionMarch 2023June 2023Allow300YesNo
18179470METHOD AND DEVICE FOR PRODUCING HONEYCOMB STRUCTUREMarch 2023January 2026Allow3411YesNo
18117086ROBOTIC VACUUM CLEANER WITH DIRT ENCLOSING MEMBER AND METHOD OF USING THE SAMEMarch 2023March 2024Allow1200YesNo
18113309SURFACE CLEANING APPARATUS, CYCLONIC AIR TREATMENT MEMBER AND SURFACE CLEANING APPARATUS INCLUDING THE SAMEFebruary 2023June 2023Allow400YesNo
18098832Process for Separating Hydrogen from an Olefin Hydrocarbon Effluent Vapor StreamJanuary 2023February 2026Allow3701YesNo
18016500GAS-LIQUID SEPARATORJanuary 2023March 2026Allow3720NoNo
18150653CYCLONE SEPARATOR AND CYCLONE SEPARATION METHODJanuary 2023October 2025Allow3310YesNo
18080710Gas DeflectorDecember 2022April 2025Allow2800NoNo
18063128Gas-Liquid Separator for a Chromatography SystemDecember 2022April 2024Allow1601YesNo
18007937GAS-LIQUID SEPARATORDecember 2022August 2025Allow3210YesNo
17991905HYDROGEN TANK PROVIDED WITH A GASEOUS HYDROGEN CAPTURE SYSTEMNovember 2022November 2025Allow3620YesNo
17990969INERTIAL SEPARATOR AND METHOD OF USENovember 2022January 2025Allow2601YesNo
17990986INERTIAL SEPARATOR AND METHOD OF USENovember 2022January 2025Allow2600YesNo
17924718A VALVE ARRANGEMENT FOR AN INDUSTRIAL DUST EXTRACTORNovember 2022February 2026Allow3901YesNo
17924591SEPARATION DEVICE AND SEPARATION SYSTEMNovember 2022July 2025Abandon3210NoNo
17998238DEVICE FOR SEPARATING A GASEOUS AND A LIQUID PHASE OF A WORKING MEDIUM AND FOR STORING THE LIQUID PHASENovember 2022January 2026Allow3910YesNo
17971743SURFACE CLEANING APPARATUS, CYCLONIC AIR TREATMENT MEMBER AND SURFACE CLEANING APPARATUS INCLUDING THE SAMEOctober 2022February 2023Allow400YesNo
17920669SEPARATION DEVICE AND SEPARATION SYSTEMOctober 2022July 2025Abandon3310NoNo
17966809METHODS AND APPARATUS FOR AN INERTIAL SEPARATION OF AIR IN AN ELECTRIC AIRCRAFTOctober 2022February 2024Allow1621YesNo
18046724IN-LINE DEBRIS SEPARATOR FOR LIQUIDOctober 2022February 2026Allow4050YesNo
17966314Process for Separating Hydrogen from an Olefin Hydrocarbon Effluent Vapor StreamOctober 2022August 2025Allow3400YesNo
18045986FLUID CHAMBER SYSTEMOctober 2022May 2024Abandon1920YesNo
18045721CYCLONE SEPARATOR PARTICULARLY FOR A POWDER RECOVERY DEVICE OF A POWDER COATING SYSTEMOctober 2022August 2024Allow2220NoNo
17963742RESERVE TANKOctober 2022April 2025Allow3010YesNo
17963375VACUUM EXCAVATION APPARATUS HAVING A DECELERATION VESSEL AND METHODS FOR EXCAVATING A SITEOctober 2022February 2025Allow2821YesNo
17938023CO2 CAPTURE SYSTEMOctober 2022February 2026Abandon4120NoNo
17915332HYDROCARBON ADSORBENT AND METHOD FOR ADSORBING HYDROCARBONSSeptember 2022March 2026Allow4130YesNo
17955283CENTRIFUGAL SEPARATION-TYPE OIL SEPARATORSeptember 2022July 2023Allow911NoNo
17907128FILTER UNIT FOR A COMPRESSORSeptember 2022December 2025Allow3921NoNo
17910366Separator for Separating a Conveyed Medium, Preferably Air, From a Conveyed Material, and Method for Separating Conveyed Material from a Conveyed Medium/Conveyed Material MixtureSeptember 2022October 2025Allow3820NoNo
17902841CYCLONE SEPARATOR ARRANGEMENTSeptember 2022February 2024Allow1720YesNo
17898658INDUCTION POWERED VORTEX FLUID SEPARATORAugust 2022October 2023Allow1301YesNo
17801659Cyclone Separator for Wastewater Treatment in MicrogravityAugust 2022October 2025Abandon3811NoNo
17801398PORTABLE AIR PURIFIERAugust 2022October 2025Abandon3810NoNo
17816863TWO-PHASE SEPARATOR DEVICE FOR REMOVING CONDENSATE OR PARTICULATE FROM A GAS STREAMAugust 2022May 2023Allow910NoNo
17871929DUST CONTROL SYSTEM AND RELATED METHODSJuly 2022January 2026Abandon4251NoNo
17868581HIGH-STABILITY SHALE GAS DESANDING DEVICE WITH GRAVEL STORAGE MECHANISMJuly 2022May 2023Allow1000YesNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner BUI, DUNG H.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
3
Examiner Affirmed
1
(33.3%)
Examiner Reversed
2
(66.7%)
Reversal Percentile
85.9%
Higher than average

What This Means

With a 66.7% 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
30
Allowed After Appeal Filing
16
(53.3%)
Not Allowed After Appeal Filing
14
(46.7%)
Filing Benefit Percentile
85.3%
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, 53.3% 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 BUI, DUNG H - Prosecution Strategy Guide

Executive Summary

Examiner BUI, DUNG H works in Art Unit 1773 and has examined 852 patent applications in our dataset. With an allowance rate of 80.6%, this examiner has an above-average tendency to allow applications. Applications typically reach final disposition in approximately 29 months.

Allowance Patterns

Examiner BUI, DUNG H's allowance rate of 80.6% places them in the 51% percentile among all USPTO examiners. This examiner has an above-average tendency to allow applications.

Office Action Patterns

On average, applications examined by BUI, DUNG H receive 1.58 office actions before reaching final disposition. This places the examiner in the 30% 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 BUI, DUNG H is 29 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 +29.1% benefit to allowance rate for applications examined by BUI, DUNG H. This interview benefit is in the 77% 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, 30.0% of applications are subsequently allowed. This success rate is in the 58% 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 41.0% of cases where such amendments are filed. This entry rate is in the 63% 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, 133.3% result in withdrawal of the rejection or reopening of prosecution. This success rate is in the 85% 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 90.0% of appeals filed. This is in the 83% percentile among all examiners. Of these withdrawals, 44.4% 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, 47.3% are granted (fully or in part). This grant rate is in the 42% 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 0.2% of allowed cases (in the 54% 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 7% percentile). This examiner rarely issues Quayle actions compared to other examiners. Allowances typically 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:

  • 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.
  • 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.
  • 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.

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.