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] => 15851793 [patent_doc_number] => 10641166 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2020-05-05 [patent_title] => Piston rod and free piston engine [patent_app_type] => utility [patent_app_number] => 16/207479 [patent_app_country] => US [patent_app_date] => 2018-12-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 15 [patent_figures_cnt] => 17 [patent_no_of_words] => 16236 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 178 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16207479 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/207479
Piston rod and free piston engine Dec 2, 2018 Issued
Array ( [id] => 16277501 [patent_doc_number] => 10760521 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-09-01 [patent_title] => Control device and control method for fuel pump [patent_app_type] => utility [patent_app_number] => 16/207576 [patent_app_country] => US [patent_app_date] => 2018-12-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 12 [patent_no_of_words] => 22279 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 237 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16207576 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/207576
Control device and control method for fuel pump Dec 2, 2018 Issued
Array ( [id] => 15365003 [patent_doc_number] => 20200018266 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-01-16 [patent_title] => EXHAUST GAS RECIRCULATION COOLER [patent_app_type] => utility [patent_app_number] => 16/204528 [patent_app_country] => US [patent_app_date] => 2018-11-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3262 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -7 [patent_words_short_claim] => 291 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16204528 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/204528
Exhaust gas recirculation cooler Nov 28, 2018 Issued
Array ( [id] => 15575339 [patent_doc_number] => 10578041 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2020-03-03 [patent_title] => Method of predicting and controlling NOx generation amount [patent_app_type] => utility [patent_app_number] => 16/198003 [patent_app_country] => US [patent_app_date] => 2018-11-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 7604 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 208 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16198003 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/198003
Method of predicting and controlling NOx generation amount Nov 20, 2018 Issued
Array ( [id] => 15932863 [patent_doc_number] => 20200158065 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-05-21 [patent_title] => FUEL INJECTOR WITH LOCATING PINS, INTERNAL COMBUSTION ENGINE USING THE SAME, AND METHOD [patent_app_type] => utility [patent_app_number] => 16/196917 [patent_app_country] => US [patent_app_date] => 2018-11-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5198 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 144 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16196917 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/196917
Fuel injector with locating pins, internal combustion engine using the same, and method Nov 19, 2018 Issued
Array ( [id] => 16925885 [patent_doc_number] => 11047353 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-06-29 [patent_title] => High-pressure fuel supply pump [patent_app_type] => utility [patent_app_number] => 16/769952 [patent_app_country] => US [patent_app_date] => 2018-11-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 15 [patent_figures_cnt] => 15 [patent_no_of_words] => 13190 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 252 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16769952 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/769952
High-pressure fuel supply pump Nov 19, 2018 Issued
Array ( [id] => 14344001 [patent_doc_number] => 20190153973 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-05-23 [patent_title] => FUEL INJECTION CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE [patent_app_type] => utility [patent_app_number] => 16/193094 [patent_app_country] => US [patent_app_date] => 2018-11-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5961 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [patent_words_short_claim] => 305 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16193094 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/193094
Fuel injection control apparatus for internal combustion engine Nov 15, 2018 Issued
Array ( [id] => 15727907 [patent_doc_number] => 10612380 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-04-07 [patent_title] => Free piston device and method for operating a free piston device [patent_app_type] => utility [patent_app_number] => 16/192291 [patent_app_country] => US [patent_app_date] => 2018-11-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 7 [patent_no_of_words] => 6878 [patent_no_of_claims] => 24 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 154 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16192291 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/192291
Free piston device and method for operating a free piston device Nov 14, 2018 Issued
Array ( [id] => 17491013 [patent_doc_number] => 11280307 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-03-22 [patent_title] => Engine drive system [patent_app_type] => utility [patent_app_number] => 16/606339 [patent_app_country] => US [patent_app_date] => 2018-11-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 4819 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 137 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16606339 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/606339
Engine drive system Nov 12, 2018 Issued
Array ( [id] => 17324108 [patent_doc_number] => 11215110 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-01-04 [patent_title] => Rotary engine and method of combusting fuel [patent_app_type] => utility [patent_app_number] => 16/177752 [patent_app_country] => US [patent_app_date] => 2018-11-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 6099 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 210 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16177752 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/177752
Rotary engine and method of combusting fuel Oct 31, 2018 Issued
Array ( [id] => 14469575 [patent_doc_number] => 20190186430 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-06-20 [patent_title] => EXHAUST GAS RECIRCULATION COOLER [patent_app_type] => utility [patent_app_number] => 16/160280 [patent_app_country] => US [patent_app_date] => 2018-10-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 16800 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 244 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16160280 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/160280
Exhaust gas recirculation cooler Oct 14, 2018 Issued
Array ( [id] => 15712277 [patent_doc_number] => 20200102904 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-04-02 [patent_title] => SYSTEMS AND METHODS FOR INTELLIGENT EVAPORATIVE EMISSIONS SYSTEM DIAGNOSTICS [patent_app_type] => utility [patent_app_number] => 16/148713 [patent_app_country] => US [patent_app_date] => 2018-10-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 20574 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [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] => 16148713 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/148713
Systems and methods for intelligent evaporative emissions system diagnostics Sep 30, 2018 Issued
Array ( [id] => 16215819 [patent_doc_number] => 10731620 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-08-04 [patent_title] => Battery key, starter and improved crank [patent_app_type] => utility [patent_app_number] => 16/145475 [patent_app_country] => US [patent_app_date] => 2018-09-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 45 [patent_figures_cnt] => 58 [patent_no_of_words] => 18036 [patent_no_of_claims] => 24 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 148 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16145475 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/145475
Battery key, starter and improved crank Sep 27, 2018 Issued
Array ( [id] => 16284312 [patent_doc_number] => 20200277914 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-09-03 [patent_title] => Variable Valve Control Device, Variable Valve Control System, and Method for Controlling Variable Valve Mechanism [patent_app_type] => utility [patent_app_number] => 16/647443 [patent_app_country] => US [patent_app_date] => 2018-09-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10051 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 237 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16647443 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/647443
Variable valve control device, variable valve control system, and method for controlling variable valve mechanism Sep 17, 2018 Issued
Array ( [id] => 15651233 [patent_doc_number] => 20200088146 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-03-19 [patent_title] => FUEL INJECTOR HAVING CAM-ACTUATED PLUNGER AND PLUNGER CAVITY METERING EDGE FOR VALVETRAIN NOISE SUPPRESSION [patent_app_type] => utility [patent_app_number] => 16/134170 [patent_app_country] => US [patent_app_date] => 2018-09-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4802 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 16134170 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/134170
Fuel injector having cam-actuated plunger and plunger cavity metering edge for valvetrain noise suppression Sep 17, 2018 Issued
Array ( [id] => 16674126 [patent_doc_number] => 20210062889 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-03-04 [patent_title] => METHOD FOR OPERATING A DRIVETRAIN OF A MOTOR VEHICLE AND DRIVETRAIN FOR A MOTOR VEHICLE [patent_app_type] => utility [patent_app_number] => 16/644638 [patent_app_country] => US [patent_app_date] => 2018-09-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4770 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [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] => 16644638 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/644638
Method for operating a drivetrain of a motor vehicle and drivetrain for a motor vehicle Sep 4, 2018 Issued
Array ( [id] => 16817402 [patent_doc_number] => 11002213 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-05-11 [patent_title] => Internal combustion engine control device and control method [patent_app_type] => utility [patent_app_number] => 16/643876 [patent_app_country] => US [patent_app_date] => 2018-08-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 17 [patent_no_of_words] => 21777 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 192 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16643876 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/643876
Internal combustion engine control device and control method Aug 22, 2018 Issued
Array ( [id] => 13828009 [patent_doc_number] => 20190017489 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-01-17 [patent_title] => METHOD FOR REGULATING THE SURFACE TEMPERATURE OF A GLOW PLUG [patent_app_type] => utility [patent_app_number] => 16/033930 [patent_app_country] => US [patent_app_date] => 2018-07-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2344 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -4 [patent_words_short_claim] => 69 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16033930 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/033930
Method for regulating the surface temperature of a glow plug Jul 11, 2018 Issued
Array ( [id] => 15103511 [patent_doc_number] => 10473062 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2019-11-12 [patent_title] => Fuel vapor processing device [patent_app_type] => utility [patent_app_number] => 16/033292 [patent_app_country] => US [patent_app_date] => 2018-07-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 17 [patent_figures_cnt] => 22 [patent_no_of_words] => 8143 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 264 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16033292 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/033292
Fuel vapor processing device Jul 11, 2018 Issued
Array ( [id] => 13827951 [patent_doc_number] => 20190017460 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-01-17 [patent_title] => Method And Control System For Operating An Internal Combustion Engine [patent_app_type] => utility [patent_app_number] => 16/033028 [patent_app_country] => US [patent_app_date] => 2018-07-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4800 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 92 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16033028 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/033028
Method and control system for operating an internal combustion engine Jul 10, 2018 Issued
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