Search

Davis D Hwu

Examiner (ID: 10544, Phone: (571)272-4904 , Office: P/3744 )

Most Active Art Unit
3752
Art Unit(s)
3752, 3744, 3753, 3763
Total Applications
3096
Issued Applications
2372
Pending Applications
166
Abandoned Applications
557

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 18188056 [patent_doc_number] => 11578628 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-02-14 [patent_title] => Method and system to selectively recover water vapor and latent heat from exhaust gas streams [patent_app_type] => utility [patent_app_number] => 17/504680 [patent_app_country] => US [patent_app_date] => 2021-10-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 3537 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 168 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17504680 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/504680
Method and system to selectively recover water vapor and latent heat from exhaust gas streams Oct 18, 2021 Issued
Array ( [id] => 17386395 [patent_doc_number] => 20220034247 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-02-03 [patent_title] => EXHAUST GAS TREATMENT SYSTEM AND METHOD WITH FOUR-WAY CATALYZED FILTER ELEMENT [patent_app_type] => utility [patent_app_number] => 17/503101 [patent_app_country] => US [patent_app_date] => 2021-10-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5984 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 154 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17503101 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/503101
Exhaust gas treatment system and method with four-way catalyzed filter element Oct 14, 2021 Issued
Array ( [id] => 17386400 [patent_doc_number] => 20220034252 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-02-03 [patent_title] => CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE [patent_app_type] => utility [patent_app_number] => 17/450903 [patent_app_country] => US [patent_app_date] => 2021-10-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 26887 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -4 [patent_words_short_claim] => 163 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17450903 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/450903
CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE Oct 13, 2021 Abandoned
Array ( [id] => 17386399 [patent_doc_number] => 20220034251 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-02-03 [patent_title] => CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE [patent_app_type] => utility [patent_app_number] => 17/450896 [patent_app_country] => US [patent_app_date] => 2021-10-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 26887 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -3 [patent_words_short_claim] => 157 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17450896 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/450896
CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE Oct 13, 2021 Abandoned
Array ( [id] => 17728292 [patent_doc_number] => 11384672 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-07-12 [patent_title] => Secondary air introduction device [patent_app_type] => utility [patent_app_number] => 17/467782 [patent_app_country] => US [patent_app_date] => 2021-09-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 7 [patent_no_of_words] => 6934 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 256 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17467782 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/467782
Secondary air introduction device Sep 6, 2021 Issued
Array ( [id] => 17244176 [patent_doc_number] => 20210363919 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-11-25 [patent_title] => EXPANSION INSTALLATION AND INSTALLATION FOR OBTAINING ELECTRICAL ENERGY FROM HEAT [patent_app_type] => utility [patent_app_number] => 17/392476 [patent_app_country] => US [patent_app_date] => 2021-08-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10211 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -37 [patent_words_short_claim] => 87 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17392476 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/392476
EXPANSION INSTALLATION AND INSTALLATION FOR OBTAINING ELECTRICAL ENERGY FROM HEAT Aug 2, 2021 Pending
Array ( [id] => 17923564 [patent_doc_number] => 11466804 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2022-10-11 [patent_title] => Vehicle exhaust evacuation system [patent_app_type] => utility [patent_app_number] => 17/391501 [patent_app_country] => US [patent_app_date] => 2021-08-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 14 [patent_no_of_words] => 5417 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 215 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17391501 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/391501
Vehicle exhaust evacuation system Aug 1, 2021 Issued
Array ( [id] => 17400351 [patent_doc_number] => 20220042441 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-02-10 [patent_title] => EXHAUST DEVICE [patent_app_type] => utility [patent_app_number] => 17/388899 [patent_app_country] => US [patent_app_date] => 2021-07-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5179 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [patent_words_short_claim] => 145 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17388899 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/388899
Exhaust device Jul 28, 2021 Issued
Array ( [id] => 17860347 [patent_doc_number] => 11441499 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2022-09-13 [patent_title] => Methods and systems for controlling imbalance with an exhaust tuning valve [patent_app_type] => utility [patent_app_number] => 17/443223 [patent_app_country] => US [patent_app_date] => 2021-07-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 9 [patent_no_of_words] => 10324 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 115 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17443223 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/443223
Methods and systems for controlling imbalance with an exhaust tuning valve Jul 21, 2021 Issued
Array ( [id] => 17357476 [patent_doc_number] => 20220018272 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-01-20 [patent_title] => MUFFLER OF AN EXHAUST SYSTEM [patent_app_type] => utility [patent_app_number] => 17/373031 [patent_app_country] => US [patent_app_date] => 2021-07-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2548 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 154 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17373031 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/373031
MUFFLER OF AN EXHAUST SYSTEM Jul 11, 2021 Abandoned
Array ( [id] => 17785206 [patent_doc_number] => 11408321 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-08-09 [patent_title] => Reductant injection in exhaust manifold [patent_app_type] => utility [patent_app_number] => 17/361773 [patent_app_country] => US [patent_app_date] => 2021-06-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 7108 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 160 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17361773 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/361773
Reductant injection in exhaust manifold Jun 28, 2021 Issued
Array ( [id] => 17315311 [patent_doc_number] => 20210404359 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-12-30 [patent_title] => SYSTEM FOR A COMBINED SPARK ARRESTOR AND MUFFLER ASSEMBLY [patent_app_type] => utility [patent_app_number] => 17/360932 [patent_app_country] => US [patent_app_date] => 2021-06-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8963 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 55 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17360932 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/360932
System for a combined spark arrestor and muffler assembly Jun 27, 2021 Issued
Array ( [id] => 18526714 [patent_doc_number] => 11713703 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-08-01 [patent_title] => Method of manufacturing electrically heated catalyst device, metal thin plate for electrode of electrically heated catalyst device, and electrically heated catalyst device [patent_app_type] => utility [patent_app_number] => 17/335083 [patent_app_country] => US [patent_app_date] => 2021-06-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 11 [patent_no_of_words] => 7930 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 244 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17335083 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/335083
Method of manufacturing electrically heated catalyst device, metal thin plate for electrode of electrically heated catalyst device, and electrically heated catalyst device May 31, 2021 Issued
Array ( [id] => 17067962 [patent_doc_number] => 20210270177 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-09-02 [patent_title] => METHOD, ENGINE, AND CONTROL SYSTEM FOR CONTROLLING SOOT LOADING OF EXHAUST GAS AFTERTREATMENT COMPONENTS [patent_app_type] => utility [patent_app_number] => 17/321853 [patent_app_country] => US [patent_app_date] => 2021-05-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6905 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 2 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17321853 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/321853
Method, engine, and control system for controlling soot loading of exhaust gas aftertreatment components May 16, 2021 Issued
Array ( [id] => 18748884 [patent_doc_number] => 11808186 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-11-07 [patent_title] => Surface component for vehicle exhaust system [patent_app_type] => utility [patent_app_number] => 17/318489 [patent_app_country] => US [patent_app_date] => 2021-05-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 19 [patent_figures_cnt] => 19 [patent_no_of_words] => 7758 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 207 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17318489 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/318489
Surface component for vehicle exhaust system May 11, 2021 Issued
Array ( [id] => 17990786 [patent_doc_number] => 20220356823 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-11-10 [patent_title] => AFTER-MARKET REPLACEMENT KIT TO TEMPORARILY BYPASS A VEHICLE'S MUFFLER SILENCER RESONATORS TO IMPROVE EXHAUST SOUND, PERFORMANCE, FUEL ECONOMY AND OTHER CHARACTERISTICS [patent_app_type] => utility [patent_app_number] => 17/308727 [patent_app_country] => US [patent_app_date] => 2021-05-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2406 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 167 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17308727 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/308727
After-market replacement kit to temporarily bypass a vehicle's muffler silencer resonators to improve exhaust sound, performance, fuel economy and other characteristics May 4, 2021 Issued
Array ( [id] => 17960772 [patent_doc_number] => 20220341352 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-10-27 [patent_title] => EXHAUST COMPONENT WITH FLEXIBLE MEMBRANE [patent_app_type] => utility [patent_app_number] => 17/236037 [patent_app_country] => US [patent_app_date] => 2021-04-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3027 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 73 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17236037 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/236037
EXHAUST COMPONENT WITH FLEXIBLE MEMBRANE Apr 20, 2021 Abandoned
Array ( [id] => 18013811 [patent_doc_number] => 11506096 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-11-22 [patent_title] => Exhaust system for an internal combustion engine [patent_app_type] => utility [patent_app_number] => 17/223041 [patent_app_country] => US [patent_app_date] => 2021-04-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 10 [patent_no_of_words] => 3917 [patent_no_of_claims] => 25 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 184 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17223041 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/223041
Exhaust system for an internal combustion engine Apr 5, 2021 Issued
Array ( [id] => 17968765 [patent_doc_number] => 11486283 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-11-01 [patent_title] => Dual function exhaust system attachment [patent_app_type] => utility [patent_app_number] => 17/218524 [patent_app_country] => US [patent_app_date] => 2021-03-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 11 [patent_no_of_words] => 5201 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 231 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17218524 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/218524
Dual function exhaust system attachment Mar 30, 2021 Issued
Array ( [id] => 17126932 [patent_doc_number] => 20210301701 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-09-30 [patent_title] => HEATING ELEMENT FOR AN EXHAUST GAS PURIFICATION DEVICE [patent_app_type] => utility [patent_app_number] => 17/215029 [patent_app_country] => US [patent_app_date] => 2021-03-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4730 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 132 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17215029 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/215029
Heating element for an exhaust gas purification device Mar 28, 2021 Issued
Menu