Search

William B. Chou

Examiner (ID: 14448, Phone: (571)270-3367 , Office: P/3779 )

Most Active Art Unit
3795
Art Unit(s)
3779, 3795
Total Applications
597
Issued Applications
406
Pending Applications
50
Abandoned Applications
152

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 14430933 [patent_doc_number] => 10320285 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2019-06-11 [patent_title] => One cycle controlled power factor correction circuit [patent_app_type] => utility [patent_app_number] => 16/037267 [patent_app_country] => US [patent_app_date] => 2018-07-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 13 [patent_no_of_words] => 7023 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 123 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16037267 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/037267
One cycle controlled power factor correction circuit Jul 16, 2018 Issued
Array ( [id] => 14095091 [patent_doc_number] => 10243465 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2019-03-26 [patent_title] => Self-stabilized constant on-time control [patent_app_type] => utility [patent_app_number] => 16/038018 [patent_app_country] => US [patent_app_date] => 2018-07-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 8 [patent_no_of_words] => 4883 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 286 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16038018 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/038018
Self-stabilized constant on-time control Jul 16, 2018 Issued
Array ( [id] => 14253791 [patent_doc_number] => 10277108 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2019-04-30 [patent_title] => Power converter suitable for power elements of different sizes [patent_app_type] => utility [patent_app_number] => 16/037722 [patent_app_country] => US [patent_app_date] => 2018-07-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 12 [patent_no_of_words] => 2725 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 136 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16037722 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/037722
Power converter suitable for power elements of different sizes Jul 16, 2018 Issued
Array ( [id] => 15016419 [patent_doc_number] => 10454378 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2019-10-22 [patent_title] => Systems and methods for voltage control and current control of power conversion systems with multiple operation modes [patent_app_type] => utility [patent_app_number] => 16/014685 [patent_app_country] => US [patent_app_date] => 2018-06-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 16 [patent_figures_cnt] => 16 [patent_no_of_words] => 14861 [patent_no_of_claims] => 23 [patent_no_of_ind_claims] => 4 [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] => 16014685 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/014685
Systems and methods for voltage control and current control of power conversion systems with multiple operation modes Jun 20, 2018 Issued
Array ( [id] => 14192259 [patent_doc_number] => 20190115835 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-04-18 [patent_title] => MULTIMODE PWM CONVERTER WITH SMOOTH MODE TRANSITION [patent_app_type] => utility [patent_app_number] => 16/011757 [patent_app_country] => US [patent_app_date] => 2018-06-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9873 [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] => 16011757 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/011757
Multimode PWM converter with smooth mode transition Jun 18, 2018 Issued
Array ( [id] => 14012641 [patent_doc_number] => 10224802 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2019-03-05 [patent_title] => Methods for extending holdup times and/or reducing bulk capacitors in multi-stage switching power supplies [patent_app_type] => utility [patent_app_number] => 15/997439 [patent_app_country] => US [patent_app_date] => 2018-06-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 13 [patent_no_of_words] => 6928 [patent_no_of_claims] => 23 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 172 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15997439 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/997439
Methods for extending holdup times and/or reducing bulk capacitors in multi-stage switching power supplies Jun 3, 2018 Issued
Array ( [id] => 13977765 [patent_doc_number] => 10218255 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2019-02-26 [patent_title] => Power converter with improved transient load response [patent_app_type] => utility [patent_app_number] => 15/996813 [patent_app_country] => US [patent_app_date] => 2018-06-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 10 [patent_no_of_words] => 5715 [patent_no_of_claims] => 30 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 282 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15996813 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/996813
Power converter with improved transient load response Jun 3, 2018 Issued
Array ( [id] => 13919181 [patent_doc_number] => 10203709 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2019-02-12 [patent_title] => Low dropout regulator and method for controlling the same [patent_app_type] => utility [patent_app_number] => 15/984313 [patent_app_country] => US [patent_app_date] => 2018-05-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 5 [patent_no_of_words] => 7178 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 247 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15984313 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/984313
Low dropout regulator and method for controlling the same May 17, 2018 Issued
Array ( [id] => 13756085 [patent_doc_number] => 10171000 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2019-01-01 [patent_title] => Reduction of audible noise in a power converter [patent_app_type] => utility [patent_app_number] => 15/979247 [patent_app_country] => US [patent_app_date] => 2018-05-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 5828 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 232 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15979247 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/979247
Reduction of audible noise in a power converter May 13, 2018 Issued
Array ( [id] => 15401895 [patent_doc_number] => 10541613 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-01-21 [patent_title] => Power supply apparatus and image forming apparatus [patent_app_type] => utility [patent_app_number] => 15/976240 [patent_app_country] => US [patent_app_date] => 2018-05-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 15 [patent_no_of_words] => 6588 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 290 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15976240 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/976240
Power supply apparatus and image forming apparatus May 9, 2018 Issued
Array ( [id] => 14890039 [patent_doc_number] => 10425075 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2019-09-24 [patent_title] => Switching regulator slew rate control with S-curve shaping [patent_app_type] => utility [patent_app_number] => 15/966265 [patent_app_country] => US [patent_app_date] => 2018-04-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 11 [patent_no_of_words] => 10914 [patent_no_of_claims] => 28 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 93 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15966265 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/966265
Switching regulator slew rate control with S-curve shaping Apr 29, 2018 Issued
Array ( [id] => 13272205 [patent_doc_number] => 10148192 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2018-12-04 [patent_title] => Power supply system and control method using the same [patent_app_type] => utility [patent_app_number] => 15/963075 [patent_app_country] => US [patent_app_date] => 2018-04-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2975 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 2 [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] => 15963075 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/963075
Power supply system and control method using the same Apr 24, 2018 Issued
Array ( [id] => 13894723 [patent_doc_number] => 10199919 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2019-02-05 [patent_title] => Zero dead time control circuit [patent_app_type] => utility [patent_app_number] => 15/960930 [patent_app_country] => US [patent_app_date] => 2018-04-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 1592 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 96 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15960930 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/960930
Zero dead time control circuit Apr 23, 2018 Issued
Array ( [id] => 13514179 [patent_doc_number] => 20180308632 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-10-25 [patent_title] => FLEXIBLE VOLTAGE TRANSFORMATION SYSTEM [patent_app_type] => utility [patent_app_number] => 15/961413 [patent_app_country] => US [patent_app_date] => 2018-04-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9845 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -21 [patent_words_short_claim] => 95 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15961413 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/961413
Flexible voltage transformation system Apr 23, 2018 Issued
Array ( [id] => 14886273 [patent_doc_number] => 10423174 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2019-09-24 [patent_title] => PFM power management system with autonomous mode switching [patent_app_type] => utility [patent_app_number] => 15/959535 [patent_app_country] => US [patent_app_date] => 2018-04-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 3939 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 116 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15959535 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/959535
PFM power management system with autonomous mode switching Apr 22, 2018 Issued
Array ( [id] => 13471877 [patent_doc_number] => 20180287481 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-10-04 [patent_title] => Switching Time Optimizer for Soft Switching of An Isolated Converter [patent_app_type] => utility [patent_app_number] => 15/944565 [patent_app_country] => US [patent_app_date] => 2018-04-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6329 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 112 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15944565 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/944565
Switching time optimizer for soft switching of an isolated converter Apr 2, 2018 Issued
Array ( [id] => 13379533 [patent_doc_number] => 20180241308 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-08-23 [patent_title] => CONTROL CIRCUIT AND SWITCHING POWER SUPPLY [patent_app_type] => utility [patent_app_number] => 15/936947 [patent_app_country] => US [patent_app_date] => 2018-03-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 38560 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 274 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15936947 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/936947
Control circuit and switching power supply Mar 26, 2018 Issued
Array ( [id] => 13750851 [patent_doc_number] => 10168363 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2019-01-01 [patent_title] => Current sensor with extended voltage range [patent_app_type] => utility [patent_app_number] => 15/920896 [patent_app_country] => US [patent_app_date] => 2018-03-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 9 [patent_no_of_words] => 5582 [patent_no_of_claims] => 23 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 164 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15920896 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/920896
Current sensor with extended voltage range Mar 13, 2018 Issued
Array ( [id] => 14012645 [patent_doc_number] => 10224804 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2019-03-05 [patent_title] => Driving circuit, power conversion device and driving method of power switch [patent_app_type] => utility [patent_app_number] => 15/919199 [patent_app_country] => US [patent_app_date] => 2018-03-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 7 [patent_no_of_words] => 5066 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 82 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15919199 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/919199
Driving circuit, power conversion device and driving method of power switch Mar 11, 2018 Issued
Array ( [id] => 13668697 [patent_doc_number] => 10164536 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2018-12-25 [patent_title] => Voltage conversion circuit and method, and multiphase parallel power system [patent_app_type] => utility [patent_app_number] => 15/902782 [patent_app_country] => US [patent_app_date] => 2018-02-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 8 [patent_no_of_words] => 9745 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 162 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15902782 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/902782
Voltage conversion circuit and method, and multiphase parallel power system Feb 21, 2018 Issued
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