Search

Keath T. Chen

Examiner (ID: 11633, Phone: (571)270-1870 , Office: P/1716 )

Most Active Art Unit
1716
Art Unit(s)
1762, 1792, 1712, 1716
Total Applications
1383
Issued Applications
434
Pending Applications
122
Abandoned Applications
847

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 16573321 [patent_doc_number] => 10895237 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2021-01-19 [patent_title] => Electric starter system with latch mechanism for pinion pre-engagement control [patent_app_type] => utility [patent_app_number] => 16/511860 [patent_app_country] => US [patent_app_date] => 2019-07-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 7 [patent_no_of_words] => 7481 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 163 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16511860 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/511860
Electric starter system with latch mechanism for pinion pre-engagement control Jul 14, 2019 Issued
Array ( [id] => 15497813 [patent_doc_number] => 20200049095 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-02-13 [patent_title] => CONTROLLER AND CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE [patent_app_type] => utility [patent_app_number] => 16/508408 [patent_app_country] => US [patent_app_date] => 2019-07-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8919 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [patent_words_short_claim] => 186 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16508408 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/508408
Controller and control method for internal combustion engine Jul 10, 2019 Issued
Array ( [id] => 15591199 [patent_doc_number] => 20200072134 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-03-05 [patent_title] => MILLER CYCLE ENGINE [patent_app_type] => utility [patent_app_number] => 16/506159 [patent_app_country] => US [patent_app_date] => 2019-07-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10111 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [patent_words_short_claim] => 139 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16506159 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/506159
Miller cycle engine Jul 8, 2019 Issued
Array ( [id] => 14995145 [patent_doc_number] => 20190316530 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-10-17 [patent_title] => SYSTEM AND METHOD FOR VARIABLE COMPRESSION RATIO ENGINE [patent_app_type] => utility [patent_app_number] => 16/455477 [patent_app_country] => US [patent_app_date] => 2019-06-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11488 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 72 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16455477 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/455477
System and method for variable compression ratio engine Jun 26, 2019 Issued
Array ( [id] => 16290751 [patent_doc_number] => 10767590 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2020-09-08 [patent_title] => Crankcase ventilation system and diagnostic method [patent_app_type] => utility [patent_app_number] => 16/450861 [patent_app_country] => US [patent_app_date] => 2019-06-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 10 [patent_no_of_words] => 11569 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 72 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16450861 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/450861
Crankcase ventilation system and diagnostic method Jun 23, 2019 Issued
Array ( [id] => 16941638 [patent_doc_number] => 11053867 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-07-06 [patent_title] => Method for operating an internal combustion engine with a fuel detection [patent_app_type] => utility [patent_app_number] => 16/444226 [patent_app_country] => US [patent_app_date] => 2019-06-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 1852 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 2 [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] => 16444226 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/444226
Method for operating an internal combustion engine with a fuel detection Jun 17, 2019 Issued
Array ( [id] => 15558571 [patent_doc_number] => 20200063697 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-02-27 [patent_title] => Fuel Vapor Pressure Detection By Bi-Directional Pump [patent_app_type] => utility [patent_app_number] => 16/441260 [patent_app_country] => US [patent_app_date] => 2019-06-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3835 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 217 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16441260 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/441260
Fuel vapor pressure detection by bi-directional pump Jun 13, 2019 Issued
Array ( [id] => 16506937 [patent_doc_number] => 20200386193 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-12-10 [patent_title] => SYSTEMS AND METHODS FOR PURGING A FUEL VAPOR CANISTER IN DUAL-PATH PURGE SYSTEMS [patent_app_type] => utility [patent_app_number] => 16/436787 [patent_app_country] => US [patent_app_date] => 2019-06-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 24470 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 63 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16436787 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/436787
Systems and methods for purging a fuel vapor canister in dual-path purge systems Jun 9, 2019 Issued
Array ( [id] => 17324524 [patent_doc_number] => 11215530 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-01-04 [patent_title] => Engine health diagnosis and fault isolation with cranking test [patent_app_type] => utility [patent_app_number] => 16/434234 [patent_app_country] => US [patent_app_date] => 2019-06-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 6 [patent_no_of_words] => 5382 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 143 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16434234 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/434234
Engine health diagnosis and fault isolation with cranking test Jun 6, 2019 Issued
Array ( [id] => 16689152 [patent_doc_number] => 20210071628 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-03-11 [patent_title] => DAMPER DEVICE [patent_app_type] => utility [patent_app_number] => 17/050422 [patent_app_country] => US [patent_app_date] => 2019-05-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5754 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 81 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17050422 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/050422
Damper device May 21, 2019 Issued
Array ( [id] => 15962201 [patent_doc_number] => 20200164852 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-05-28 [patent_title] => MOTOR CONTROL APPARATUS AND METHOD FOR DAMPING ENGINE VIBRATION [patent_app_type] => utility [patent_app_number] => 16/419848 [patent_app_country] => US [patent_app_date] => 2019-05-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7250 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 105 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16419848 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/419848
Motor control apparatus and method for damping engine vibration May 21, 2019 Issued
Array ( [id] => 16468964 [patent_doc_number] => 20200370501 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-11-26 [patent_title] => INTAKE PORTS FOR A DIESEL ENGINE [patent_app_type] => utility [patent_app_number] => 16/418566 [patent_app_country] => US [patent_app_date] => 2019-05-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2230 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 75 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16418566 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/418566
INTAKE PORTS FOR A DIESEL ENGINE May 20, 2019 Abandoned
Array ( [id] => 16933170 [patent_doc_number] => 20210199059 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-07-01 [patent_title] => CONTROL DEVICE AND CONTROL METHOD FOR VEHICLE [patent_app_type] => utility [patent_app_number] => 17/058284 [patent_app_country] => US [patent_app_date] => 2019-05-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13739 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 106 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17058284 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/058284
Control device and control method for vehicle May 19, 2019 Issued
Array ( [id] => 14809341 [patent_doc_number] => 20190271280 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-09-05 [patent_title] => INTERNAL COMBUSTION ENGINE HAVING TWO FUEL INJECTORS PER CYLINDER AND CONTROL METHOD THEREFOR [patent_app_type] => utility [patent_app_number] => 16/416159 [patent_app_country] => US [patent_app_date] => 2019-05-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 17195 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 176 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16416159 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/416159
Internal combustion engine having two fuel injectors per cylinder and control method therefor May 17, 2019 Issued
Array ( [id] => 17393827 [patent_doc_number] => 11242832 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-02-08 [patent_title] => Structure for attaching metal diaphragm damper [patent_app_type] => utility [patent_app_number] => 17/048992 [patent_app_country] => US [patent_app_date] => 2019-05-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 5845 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 156 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17048992 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/048992
Structure for attaching metal diaphragm damper May 16, 2019 Issued
Array ( [id] => 14809273 [patent_doc_number] => 20190271246 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-09-05 [patent_title] => EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE [patent_app_type] => utility [patent_app_number] => 16/413869 [patent_app_country] => US [patent_app_date] => 2019-05-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 12580 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [patent_words_short_claim] => 344 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16413869 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/413869
Exhaust purification system of internal combustion engine May 15, 2019 Issued
Array ( [id] => 16720836 [patent_doc_number] => 20210087983 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-03-25 [patent_title] => AN INTERNAL COMBUSTION ENGINE AND METHOD OF OPERATING AN INTERNAL COMBUSTION ENGINE [patent_app_type] => utility [patent_app_number] => 17/052180 [patent_app_country] => US [patent_app_date] => 2019-05-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 51153 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 126 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17052180 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/052180
Internal combustion engine and method of operating an internal combustion engine May 1, 2019 Issued
Array ( [id] => 15087855 [patent_doc_number] => 20190338738 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-11-07 [patent_title] => FUEL TANK [patent_app_type] => utility [patent_app_number] => 16/388434 [patent_app_country] => US [patent_app_date] => 2019-04-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4191 [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] => 16388434 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/388434
FUEL TANK Apr 17, 2019 Abandoned
Array ( [id] => 16445453 [patent_doc_number] => 10837371 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-11-17 [patent_title] => Vehicle power supply apparatus [patent_app_type] => utility [patent_app_number] => 16/371767 [patent_app_country] => US [patent_app_date] => 2019-04-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 18 [patent_figures_cnt] => 25 [patent_no_of_words] => 11939 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 185 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16371767 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/371767
Vehicle power supply apparatus Mar 31, 2019 Issued
Array ( [id] => 16344431 [patent_doc_number] => 20200309081 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-10-01 [patent_title] => AUTOMATIC ENGINE START-STOP BASED ON EXTERNAL CUES [patent_app_type] => utility [patent_app_number] => 16/367201 [patent_app_country] => US [patent_app_date] => 2019-03-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7989 [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] => 16367201 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/367201
AUTOMATIC ENGINE START-STOP BASED ON EXTERNAL CUES Mar 26, 2019 Abandoned
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