USPTO Examiner DANG THUAN D - Art Unit 1772

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19095510SYSTEMS, METHODS, AND APPARATUS FOR MECHANICALLY REMOVING LIQUID FROM MATERIALMarch 2025May 2025Allow200YesNo
18808797COMPOSITIONS AND METHODS FOR THE PURIFICATION OF ISOPRENOIDSAugust 2024March 2025Allow701YesNo
18837937CLEANING PROCESS OF A VINYL AROMATIC COMPOUNDS DISTILLATION UNIT AND PROCESSES INCLUDING SUCH CLEANING PROCESSAugust 2024March 2025Allow710NoNo
18738697Process for the Production of Renewable Distillate-Range HydrocarbonsJune 2024December 2024Allow600NoNo
18736236HYDROGENATION OF ACETYLENES IN A HYDROCARBON STREAMJune 2024May 2025Allow1101YesNo
18669691Method of Improving Selective Hydrogenation of Unsaturated Hydrocarbon in Aromatic Fraction Through Catalyst PretreatmentMay 2024November 2024Allow600NoNo
18710414Process To Conduct An Alkane Transformation Into Olefins In An Electrified Fluidized Bed ReactorMay 2024July 2024Allow200YesNo
18662222Pyrolysis Reactor System and MethodMay 2024August 2025Allow1511NoNo
18632596Method of Making Colloidal Suspensions of Metal Organic Frameworks in Polymeric Solutions and Uses ThereofApril 2024April 2025Allow1201YesNo
18601930SYSTEMS AND METHODS FOR REFORMING A HEAVY AROMATIC STREAMMarch 2024November 2024Allow800NoNo
18581265METHODS AND SYSTEMS FOR CO-FEEDING WASTE PLASTICS INTO A REFINERYFebruary 2024September 2024Allow600NoNo
18415851REACTION CHAMBER FOR SUPERCRITICAL WATER OXIDATION REACTORJanuary 2024March 2025Allow1401NoNo
18409166ON-SITE SOLVENT GENERATION AND MAKEUP FOR TAR SOLVATION IN AN OLEFIN PLANTJanuary 2024August 2024Allow700YesNo
18544924DIMERIZATION OF CYCLOPENTADIENE FROM SIDE STREAM FROM DEBUTANIZERDecember 2023August 2024Allow800YesNo
18531601ENHANCING H2S SPECIFICATION IN NGL PRODUCTSDecember 2023August 2024Allow800NoNo
18517843SYSTEMS, METHODS, AND DEVICES FOR METHANE CONVERSION VIA GAS RECYCLINGNovember 2023October 2024Allow1101NoNo
18503050PROCESS FOR RECOVERING CRACKED PRODUCTNovember 2023May 2025Allow1800YesNo
18497301HEATING INTEGRATION WITH FIRED HEATERSOctober 2023August 2025Allow2201NoNo
18486627PARAFFIN DEHYDROGENATION REACTOR ELECTRIC HEATEROctober 2023December 2025Allow2611NoNo
18480002METHOD OF PRODUCING PLASTIC PYROLYSIS PRODUCTS FROM A MIXED PLASTICS STREAMOctober 2023April 2024Allow700YesNo
18471545PROCESSES FOR VISCOSITY BREAKING OF PLASTICSSeptember 2023June 2025Allow2020YesNo
18280689PROCESS FOR OBTAINING ISOBUTENE FROM A C4-HYDROCARBON MIXTURESeptember 2023April 2025Allow1910NoNo
18280687PROCESS FOR OBTAINING ISOBUTENE FROM A C4-HYDROCARBON MIXTURESeptember 2023March 2025Allow1810NoNo
18280686PROCESS FOR OBTAINING ISOBUTENE FROM A C4-HYDROCARBON MIXTURESeptember 2023June 2025Allow2210NoNo
18237157METHODS FOR DEHYDROGENATION OF PERHYDRO-BENZYLTOLUENEAugust 2023December 2024Allow1600YesNo
18237000Low Temperature Membrane Process for Biogas UpgradingAugust 2023March 2025Allow1901NoNo
18453535NAPHTHA TO ETHANE AND PROPANE UNIT WITH HYDROGEN SLIPAugust 2023November 2025Allow2611NoNo
18366131MEMBRANE PROCESS FOR BUTADIENE EXTRACTION SOLVENT PURIFICATIONAugust 2023November 2025Allow2711NoNo
18355160CATALYTIC PROCESS FOR THE PRODUCTION OF AROMATIC HYDROCARBONS FROM USED COOKING OILJuly 2023January 2025Allow1810NoNo
18345918DIAMOND COMPOSITIONJune 2023October 2025Abandon2821NoNo
18342325PROCESSES AND SYSTEMS FOR PRODUCING LIGHT OLEFINS AND AROMATICS FROM A MIXED PLASTICS STREAMJune 2023January 2024Allow700NoNo
18269165METHOD FOR PRODUCING OLEFINS USING NOVEL CATALYST AND CIRCULATING FLUIDIZED BED PROCESSJune 2023July 2025Allow2510NoNo
18268053PROCESS FOR THE DEPOLYMERIZATION OF PLASTIC WASTE MATERIALJune 2023March 2025Allow2110NoNo
18205439METHOD AND SYSTEM EMBODIMENTS FOR CONVERTING ETHANOL TO PARA-XYLENE AND ORTHO-XYLENEJune 2023November 2024Allow1800NoNo
18254846ENERGY-SAVING METHOD FOR PREPARING ELECTRONIC-GRADE CARBONATEMay 2023May 2024Allow1100NoNo
18322613WATER RESOURCE CIRCULATION AND PURIFICATION DEVICEMay 2023August 2025Allow2700NoNo
18135387SYSTEMS FOR VACUUM MEDIATED LIPOSOME PREPARATION, AND METHODS FOR USING THE SAMEApril 2023November 2025Allow3100NoNo
18032075METHOD OF CAUSING CONVERSION OF VOLATILE TERPENE SPECIESApril 2023November 2023Allow810YesNo
18124955Method of Manufacturing StyreneMarch 2023October 2023Allow710YesNo
18185106PHOTOCATALYST FOR THE DEGRADATION OF METHYL ORANGE DYEMarch 2023November 2025Allow3200NoNo
18026450PYROLYSIS OF CARBON BASED MATERIALMarch 2023March 2025Allow2411YesNo
18026556SEPARATION MEMBRANEMarch 2023August 2025Allow2900NoNo
18181761CONCENTRATION DEVICE, SAMPLE SOLUTION CONCENTRATION METHOD, SAMPLE SOLUTION EXAMINATION METHOD, AND EXAMINATION KITMarch 2023September 2025Allow3000NoNo
18178057COLLAPSIBLE AIR FILTER AND ASSOCIATED PACKAGINGMarch 2023November 2025Allow3201YesNo
18116747Process for the Production of Renewable Distillate-Range HydrocarbonsMarch 2023May 2024Allow1511YesNo
18112365PRODUCTION OF HIGH YIELDS OF LIGHT OLEFINS FROM HEAVY HYDROCARBONSFebruary 2023December 2023Allow1010YesNo
18110744Centrifuge Processing Device and MethodFebruary 2023August 2025Allow3000NoNo
18108055CATALYST SYSTEMSFebruary 2023January 2024Allow1200NoNo
18107133CATALYST SYSTEMSFebruary 2023September 2023Allow800YesNo
18165626METHODS FOR PRODUCING XYLENES WITH LIMITED ETHYLBENZENE PRODUCTIONFebruary 2023June 2024Allow1630YesNo
18019490METHOD FOR MANUFACTURING HYDROCARBON COMPOUND FROM CARBON DIOXIDE AT CONCENTRATIONS INCLUDING LOW CONCENTRATION RANGEFebruary 2023July 2024Allow1801NoNo
18104545METHOD FOR CONVERSION OF DIOLS TO OLEFIN PRODUCTSFebruary 2023June 2023Allow400NoNo
18018452METHOD AND SYSTEM FOR CAPTURING CARBON DIOXIDE FROM THE AIRJanuary 2023November 2025Allow3310NoNo
18101528METHODS AND SYSTEMS FOR CO-FEEDING WASTE PLASTICS INTO A REFINERYJanuary 2023November 2023Allow1001NoNo
18017070PROCESS TO CONDUCT AN ENDOTHERMIC DEHYROGENATION AND/OR AROMATISATION REACTION IN A FLUIDIZED BED REACTORJanuary 2023August 2023Allow700NoNo
18016834PRODUCTION APPARATUS AND PRODUCTION METHOD OF SUCROSE-6-ESTERJanuary 2023July 2025Allow3000YesNo
18098577SYSTEM AND METHOD FOR GENERATING SYNTHETIC DIAMONDS VIA ATMOSPHERIC CARBON CAPTUREJanuary 2023October 2025Abandon3312NoNo
18095892PROCESSES AND SYSTEMS FOR PRODUCING LIGHT OLEFINS AND AROMATICS FROM A MIXED PLASTICS STREAMJanuary 2023May 2023Allow400NoNo
18005019COANDA EFFECT INDUCED LAMELLAE CLEANING SYSTEM FOR WASTEWATER AND DRINKING WATER TREATMENT CLARIFIERJanuary 2023July 2025Allow3000NoNo
18004200Hydrocarbon Extraction and/or Separation Processes Utilizing a Membrane SeparatorJanuary 2023July 2024Allow1910NoNo
18067799STRIPPING OF REGENERATED CATALYST DURING START-UP AND SHUTDOWNDecember 2022June 2024Allow1821YesNo
18078036THERMALLY COUPLED DISTILLATION SCHEME FOR PURIFICATION OF CUMENEDecember 2022November 2024Allow2421YesNo
18058316PROCESS FOR PREPARING A 3,7-DIMETHYLALKANE COMPOUNDNovember 2022March 2023Allow300NoNo
18056612FLUID INJECTION SYSTEM FOR PIPELINESNovember 2022November 2025Allow3610NoNo
18055986PROCESSES FOR VISCOSITY BREAKING OF PLASTICSNovember 2022July 2023Allow810NoNo
18051718CATALYZED DEPOLYMERIZATION OF A CHEMICALLY COMPLEX FEEDSTOCKNovember 2022August 2023Allow901NoNo
17973669Method of Improving Selective Hydrogenation of Unsaturated Hydrocarbon in Aromatic Fraction Through Catalyst PretreatmentOctober 2022February 2024Allow1511NoNo
17973975Process of Selectively Hydrogenating Gas Mixture Having High Acetylene ContentOctober 2022October 2023Allow1110NoNo
18048299ENHANCING H2S SPECIFICATION IN NGL PRODUCTSOctober 2022November 2023Allow1201NoNo
17966343SYSTEMS AND METHODS FOR REFORMING A HEAVY AROMATIC STREAMOctober 2022August 2023Allow1001NoNo
17964106Method of Preparing Unsaturated Hydrocarbons by Black body Photocatalytic Conversion of Saturated HydrocarbonOctober 2022August 2023Allow1010NoNo
17937558OLEFIN METATHESIS IN A LOOP REACTOROctober 2022March 2023Allow600NoNo
17936988PROCESSES AND APPARATUSES FOR OPERATING A HYDROCARBON CONVERSION ZONESeptember 2022September 2023Allow1111NoNo
17956933Membrane Process and System for High Recovery of a Nonpermeating Gas Utilizing a Sweep GasSeptember 2022April 2023Allow600YesNo
17952748ALKENE GENERATION USING METAL SULFIDE PARTICLESSeptember 2022August 2023Allow1001NoNo
17930905HIGH PURITY ISOAMYLENE PRODUCTION FROM TERTIARY AMYL METHYL ETHER DECOMPOSITIONSeptember 2022February 2024Allow1800NoNo
17822026Pyrolysis Reactor System and MethodAugust 2022April 2024Allow1911NoNo
17801397WATER PURIFICATION FILTERAugust 2022June 2025Allow3400NoNo
17821375OLEFIN METATHESIS BY REACTIVE DISTILLATIONAugust 2022September 2023Allow1310NoNo
17800089METHOD FOR PRODUCING LIMONENE AND COMPOSITION CONTAINING LIMONENEAugust 2022July 2024Allow2311YesNo
17799913METHOD FOR PRODUCING OLEFINSAugust 2022December 2023Abandon1610NoNo
17887804INDEPENDENT DOUBLE-NEGATIVE-PRESSURE SHALE SHAKERAugust 2022July 2025Allow3500NoNo
17799506PROCESS FOR PREPARING LIMONENE AND COMPOSITION CONTAINING LIMONENEAugust 2022March 2024Allow1911NoNo
17871858DIAMOND COMPOSITIONJuly 2022May 2023Allow910NoNo
17814495DIAMOND COMPOSITIONJuly 2022March 2023Allow801NoNo
17864808Efficient low-temperature, catalyst-free dehydrogenation of alkanesJuly 2022April 2023Allow911NoNo
17857244METHOD OF GAS SEPARATION USING METAL-ORGANIC FRAMEWORK MEMBRANEJuly 2022April 2023Allow910NoNo
17790243METHODS AND SYSTEMS FOR PROCESSING PENTANESJune 2022April 2023Allow1000YesNo
17786813BUTADIENE HEAT INTEGRATION PROCESSJune 2022May 2023Allow1100NoNo
17843303SYSTEM AND METHOD FOR GENERATING SYNTHETIC DIAMONDS VIA ATMOSPHERIC CARBON CAPTUREJune 2022October 2022Allow410NoNo
17785562REMOVAL OF CARBON MONOXIDE, OXYGEN AND ACETYLENE FROM AN OXIDATIVE DEHYDROGENATION PROCESSJune 2022January 2025Allow3131YesNo
17807024ISOMERIZATION OF NORMAL PARAFFINSJune 2022March 2024Allow2121NoNo
17839415FILTER SYSTEM, POSITIONING MECHANISM, FILTER ELEMENT AND METHOD FOR INSERTING AND POSITIONING A FILTER ELEMENTJune 2022November 2025Allow4101NoNo
17838406FCC CO-PROCESSING OF BIOMASS OIL WITH HYDROGEN RICH CO-FEEDJune 2022July 2024Allow2521YesNo
17837651UPGRADING BIO-WASTE IN FCCJune 2022April 2024Allow2212YesNo
17835068PROCESSES AND SYSTEMS FOR PRODUCING AROMATIC PRODUCTS AND HYDROGEN CARRIERSJune 2022October 2023Allow1611NoNo
17830971LIQUID-LIQUID EXTRACTION OF VACUUM RESID-CONTAINING FLUIDJune 2022July 2023Allow1301YesNo
17829740CONVERSION OF LIGHT NAPHTHA TO ENHANCED VALUE AROMATICS IN AN INTEGRATED REACTOR PROCESSJune 2022September 2022Allow300NoNo
17781321BLOOD TREATMENT MACHINE WITH AUTOMATIC FILL LEVEL MONITORING AND CONTROL OF AN AIR SEPARATOR BY MEANS OF PRESSURE PULSE FREQUENCY ANALYSISMay 2022September 2024Allow2800NoNo
17827197SEPARATOR FOR SEPARATING CONSTITUENTS OF WELL FLUID, METHOD THERFOR AND SYSTEM FOR SEPARATING CONSTITUENTS OF WELL FLUIDMay 2022December 2025Allow4321YesNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner DANG, THUAN D.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
21
Examiner Affirmed
17
(81.0%)
Examiner Reversed
4
(19.0%)
Reversal Percentile
30.6%
Lower than average

What This Means

With a 19.0% reversal rate, the PTAB affirms the examiner's rejections in the vast majority of cases. This reversal rate is below the USPTO average, indicating that appeals face more challenges here than typical.

Strategic Value of Filing an Appeal

Total Appeal Filings
48
Allowed After Appeal Filing
13
(27.1%)
Not Allowed After Appeal Filing
35
(72.9%)
Filing Benefit Percentile
39.3%
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, 27.1% 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 face challenges. Ensure your case has strong merit before committing to full Board review.

Filing a Notice of Appeal shows limited benefit. Consider other strategies like interviews or amendments before appealing.

Examiner DANG, THUAN D - Prosecution Strategy Guide

Executive Summary

Examiner DANG, THUAN D works in Art Unit 1772 and has examined 1,048 patent applications in our dataset. With an allowance rate of 86.0%, this examiner has an above-average tendency to allow applications. Applications typically reach final disposition in approximately 21 months.

Allowance Patterns

Examiner DANG, THUAN D's allowance rate of 86.0% places them in the 63% percentile among all USPTO examiners. This examiner has an above-average tendency to allow applications.

Office Action Patterns

On average, applications examined by DANG, THUAN D receive 0.94 office actions before reaching final disposition. This places the examiner in the 7% 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 DANG, THUAN D is 21 months. This places the examiner in the 90% percentile for prosecution speed. Applications move through prosecution relatively quickly with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a +23.0% benefit to allowance rate for applications examined by DANG, THUAN D. This interview benefit is in the 69% percentile among all examiners. Recommendation: Interviews provide an above-average benefit with this examiner and are worth considering.

Request for Continued Examination (RCE) Effectiveness

When applicants file an RCE with this examiner, 35.2% of applications are subsequently allowed. This success rate is in the 79% 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 23.2% of cases where such amendments are filed. This entry rate is in the 31% 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, 114.3% result in withdrawal of the rejection or reopening of prosecution. This success rate is in the 80% 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 52.3% of appeals filed. This is in the 23% percentile among all examiners. Of these withdrawals, 43.5% 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, 44.9% are granted (fully or in part). This grant rate is in the 38% 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 3.2% of allowed cases (in the 80% 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 0.7% of allowed cases (in the 57% 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:

  • 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.