Search

Kawing Chan

Examiner (ID: 4339, Phone: (571)270-3909 , Office: P/2837 )

Most Active Art Unit
2837
Art Unit(s)
2846, 2837, 4147
Total Applications
954
Issued Applications
690
Pending Applications
56
Abandoned Applications
235

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 17898437 [patent_doc_number] => 20220308099 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-09-29 [patent_title] => SYSTEM AND METHOD FOR ANALYZING WAVEFORM APPLIED TO SERVO MOTOR SYSTEM [patent_app_type] => utility [patent_app_number] => 17/351396 [patent_app_country] => US [patent_app_date] => 2021-06-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4589 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 302 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17351396 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/351396
SYSTEM AND METHOD FOR ANALYZING WAVEFORM APPLIED TO SERVO MOTOR SYSTEM Jun 17, 2021 Abandoned
Array ( [id] => 19972823 [patent_doc_number] => 12341447 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-06-24 [patent_title] => Power conversion device [patent_app_type] => utility [patent_app_number] => 18/021220 [patent_app_country] => US [patent_app_date] => 2021-06-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 13 [patent_no_of_words] => 5048 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 219 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18021220 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/021220
Power conversion device Jun 13, 2021 Issued
Array ( [id] => 17796219 [patent_doc_number] => 20220255311 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-08-11 [patent_title] => OVERVOLTAGE PROTECTING SYSTEM AND METHOD OF MOTOR PRE-DRIVER [patent_app_type] => utility [patent_app_number] => 17/324109 [patent_app_country] => US [patent_app_date] => 2021-05-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7600 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 300 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17324109 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/324109
Overvoltage protecting system and method of motor pre-driver May 18, 2021 Issued
Array ( [id] => 18970086 [patent_doc_number] => 20240050178 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-15 [patent_title] => SURGICAL ROBOT, CONTROL METHOD THEREOF, AND STORAGE MEDIUM [patent_app_type] => utility [patent_app_number] => 18/267615 [patent_app_country] => US [patent_app_date] => 2021-05-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10540 [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] => 18267615 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/267615
SURGICAL ROBOT, CONTROL METHOD THEREOF, AND STORAGE MEDIUM May 9, 2021 Pending
Array ( [id] => 18984149 [patent_doc_number] => 11909344 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-02-20 [patent_title] => Control device [patent_app_type] => utility [patent_app_number] => 17/306027 [patent_app_country] => US [patent_app_date] => 2021-05-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 15 [patent_no_of_words] => 9481 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 279 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17306027 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/306027
Control device May 2, 2021 Issued
Array ( [id] => 17291993 [patent_doc_number] => 20210387832 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-12-16 [patent_title] => DETECTION SYSTEM FOR AN ABNORMAL SITUATION DURING ELEVATOR OPERATION [patent_app_type] => utility [patent_app_number] => 17/246802 [patent_app_country] => US [patent_app_date] => 2021-05-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2228 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 117 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17246802 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/246802
DETECTION SYSTEM FOR AN ABNORMAL SITUATION DURING ELEVATOR OPERATION May 2, 2021 Pending
Array ( [id] => 18395488 [patent_doc_number] => 20230163709 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-05-25 [patent_title] => METHOD FOR SENSORLESS CURRENT PROFILING IN A SWITCHED RELUCTANCE MACHINE [patent_app_type] => utility [patent_app_number] => 17/917829 [patent_app_country] => US [patent_app_date] => 2021-04-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6802 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 135 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17917829 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/917829
METHOD FOR SENSORLESS CURRENT PROFILING IN A SWITCHED RELUCTANCE MACHINE Apr 7, 2021 Abandoned
Array ( [id] => 18941407 [patent_doc_number] => 20240036546 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-01 [patent_title] => WIRING ERROR DETECTION DEVICE FOR MOTOR [patent_app_type] => utility [patent_app_number] => 18/552359 [patent_app_country] => US [patent_app_date] => 2021-04-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5987 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [patent_words_short_claim] => 179 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18552359 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/552359
WIRING ERROR DETECTION DEVICE FOR MOTOR Apr 6, 2021 Pending
Array ( [id] => 19829139 [patent_doc_number] => 12249936 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-03-11 [patent_title] => Motor control device [patent_app_type] => utility [patent_app_number] => 17/920330 [patent_app_country] => US [patent_app_date] => 2021-04-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 31 [patent_figures_cnt] => 44 [patent_no_of_words] => 15946 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 125 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17920330 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/920330
Motor control device Apr 5, 2021 Issued
Array ( [id] => 18464815 [patent_doc_number] => 11689114 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-06-27 [patent_title] => Control facility for a DC link converter and DC link converter [patent_app_type] => utility [patent_app_number] => 17/219223 [patent_app_country] => US [patent_app_date] => 2021-03-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 10 [patent_no_of_words] => 5343 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 205 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17219223 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/219223
Control facility for a DC link converter and DC link converter Mar 30, 2021 Issued
Array ( [id] => 18579508 [patent_doc_number] => 11736052 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-08-22 [patent_title] => Fan control circuit with temperature compensation and method of controlling fan [patent_app_type] => utility [patent_app_number] => 17/218091 [patent_app_country] => US [patent_app_date] => 2021-03-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 6 [patent_no_of_words] => 7673 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 260 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17218091 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/218091
Fan control circuit with temperature compensation and method of controlling fan Mar 29, 2021 Issued
Array ( [id] => 19550681 [patent_doc_number] => 12134375 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-11-05 [patent_title] => Electric brake device and electric brake control device [patent_app_type] => utility [patent_app_number] => 17/911295 [patent_app_country] => US [patent_app_date] => 2021-03-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 14 [patent_no_of_words] => 14384 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 3 [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] => 17911295 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/911295
Electric brake device and electric brake control device Mar 23, 2021 Issued
Array ( [id] => 18156744 [patent_doc_number] => 11569745 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-01-31 [patent_title] => Electrical system having boost converter functionality [patent_app_type] => utility [patent_app_number] => 17/208157 [patent_app_country] => US [patent_app_date] => 2021-03-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 4597 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 218 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17208157 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/208157
Electrical system having boost converter functionality Mar 21, 2021 Issued
Array ( [id] => 18360301 [patent_doc_number] => 20230141892 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-05-11 [patent_title] => Disconnecting Device and Power Supply Network for a Motor Vehicle [patent_app_type] => utility [patent_app_number] => 17/917074 [patent_app_country] => US [patent_app_date] => 2021-03-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6443 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [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] => 17917074 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/917074
Disconnecting Device and Power Supply Network for a Motor Vehicle Mar 1, 2021 Pending
Array ( [id] => 18268611 [patent_doc_number] => 20230089853 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-03-23 [patent_title] => FAULT TOLERANT MULTIPLE ROTARY ACTUATOR ASSEMBLY [patent_app_type] => utility [patent_app_number] => 17/802405 [patent_app_country] => US [patent_app_date] => 2021-02-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7257 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -27 [patent_words_short_claim] => 314 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17802405 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/802405
Fault tolerant multiple rotary actuator assembly Feb 25, 2021 Issued
Array ( [id] => 16901774 [patent_doc_number] => 20210180690 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-06-17 [patent_title] => SHIFT RANGE CONTROL DEVICE [patent_app_type] => utility [patent_app_number] => 17/184779 [patent_app_country] => US [patent_app_date] => 2021-02-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5973 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [patent_words_short_claim] => 160 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17184779 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/184779
SHIFT RANGE CONTROL DEVICE Feb 24, 2021 Abandoned
Array ( [id] => 18801735 [patent_doc_number] => 11834887 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-12-05 [patent_title] => Movable barrier apparatus and methods for responding to barrier travel obstructions and abnormalities [patent_app_type] => utility [patent_app_number] => 17/184366 [patent_app_country] => US [patent_app_date] => 2021-02-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 21 [patent_figures_cnt] => 21 [patent_no_of_words] => 10701 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 114 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17184366 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/184366
Movable barrier apparatus and methods for responding to barrier travel obstructions and abnormalities Feb 23, 2021 Issued
Array ( [id] => 17051949 [patent_doc_number] => 20210261383 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-08-26 [patent_title] => ELEVATOR MONITORING SYSTEM [patent_app_type] => utility [patent_app_number] => 17/167696 [patent_app_country] => US [patent_app_date] => 2021-02-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3899 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 173 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17167696 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/167696
Elevator monitoring system Feb 3, 2021 Issued
Array ( [id] => 17780981 [patent_doc_number] => 20220247331 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-08-04 [patent_title] => HIGH FREQUENCY AC POWER DISTRIBUTION NETWORK FOR ELECTRIC VEHICLES [patent_app_type] => utility [patent_app_number] => 17/166380 [patent_app_country] => US [patent_app_date] => 2021-02-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4966 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 56 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17166380 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/166380
High frequency AC power distribution network for electric vehicles Feb 2, 2021 Issued
Array ( [id] => 17006454 [patent_doc_number] => 20210237615 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-08-05 [patent_title] => REDUNDANT POWER DISTRIBUTION CIRCUITS FOR ELECTRIC VEHICLES [patent_app_type] => utility [patent_app_number] => 17/165742 [patent_app_country] => US [patent_app_date] => 2021-02-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5421 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -28 [patent_words_short_claim] => 52 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17165742 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/165742
Redundant power distribution circuits for electric vehicles Feb 1, 2021 Issued
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