Search

Cynthia R. Underwood

Examiner (ID: 16894, Phone: (571)272-7652 , Office: P/2918 )

Most Active Art Unit
2918
Art Unit(s)
2915, 2918, 2924
Total Applications
5157
Issued Applications
5107
Pending Applications
8
Abandoned Applications
49

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 20190142 [patent_doc_number] => 12401272 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-08-26 [patent_title] => Totem pole power factor correction circuit [patent_app_type] => utility [patent_app_number] => 18/211362 [patent_app_country] => US [patent_app_date] => 2023-06-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 18 [patent_figures_cnt] => 18 [patent_no_of_words] => 7114 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 363 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18211362 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/211362
Totem pole power factor correction circuit Jun 18, 2023 Issued
Array ( [id] => 18849674 [patent_doc_number] => 20230412078 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-12-21 [patent_title] => Mixed-Mode Power Converter Control [patent_app_type] => utility [patent_app_number] => 18/333403 [patent_app_country] => US [patent_app_date] => 2023-06-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6033 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 138 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18333403 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/333403
Mixed-mode power converter control Jun 11, 2023 Issued
Array ( [id] => 18680789 [patent_doc_number] => 20230318452 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-10-05 [patent_title] => CONTROL CIRCUIT WITH PEAK CURRENT LIMIT FOR SWITCHING CONVERTERS AND CONTROL METHOD THEREOF [patent_app_type] => utility [patent_app_number] => 18/325365 [patent_app_country] => US [patent_app_date] => 2023-05-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5228 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 136 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18325365 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/325365
Control circuit with peak current limit for switching converters and control method thereof May 29, 2023 Issued
Array ( [id] => 19306847 [patent_doc_number] => 20240235427 [patent_country] => US [patent_kind] => A9 [patent_issue_date] => 2024-07-11 [patent_title] => ELECTRIC-POWER CONVERSION APPARATUS [patent_app_type] => utility [patent_app_number] => 18/203421 [patent_app_country] => US [patent_app_date] => 2023-05-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 14828 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [patent_words_short_claim] => 298 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18203421 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/203421
Electric-power conversion apparatus May 29, 2023 Issued
Array ( [id] => 19306847 [patent_doc_number] => 20240235427 [patent_country] => US [patent_kind] => A9 [patent_issue_date] => 2024-07-11 [patent_title] => ELECTRIC-POWER CONVERSION APPARATUS [patent_app_type] => utility [patent_app_number] => 18/203421 [patent_app_country] => US [patent_app_date] => 2023-05-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 14828 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [patent_words_short_claim] => 298 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18203421 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/203421
Electric-power conversion apparatus May 29, 2023 Issued
Array ( [id] => 19619993 [patent_doc_number] => 20240405673 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-12-05 [patent_title] => POWER CONVERTER [patent_app_type] => utility [patent_app_number] => 18/325223 [patent_app_country] => US [patent_app_date] => 2023-05-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2631 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 184 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18325223 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/325223
POWER CONVERTER May 29, 2023 Pending
Array ( [id] => 20111922 [patent_doc_number] => 12362662 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-07-15 [patent_title] => Commutation assistance by controlling the shape of the current wave in a bidirectional totem pole converter [patent_app_type] => utility [patent_app_number] => 18/203299 [patent_app_country] => US [patent_app_date] => 2023-05-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 13 [patent_no_of_words] => 1491 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 152 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18203299 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/203299
Commutation assistance by controlling the shape of the current wave in a bidirectional totem pole converter May 29, 2023 Issued
Array ( [id] => 20259420 [patent_doc_number] => 12431786 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-09-30 [patent_title] => Control circuit and control method for switched capacitor converter [patent_app_type] => utility [patent_app_number] => 18/202327 [patent_app_country] => US [patent_app_date] => 2023-05-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 6 [patent_no_of_words] => 0 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 313 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18202327 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/202327
Control circuit and control method for switched capacitor converter May 25, 2023 Issued
Array ( [id] => 19638811 [patent_doc_number] => 12169418 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-12-17 [patent_title] => Voltage regulators [patent_app_type] => utility [patent_app_number] => 18/323530 [patent_app_country] => US [patent_app_date] => 2023-05-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 4 [patent_no_of_words] => 11833 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 2 [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] => 18323530 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/323530
Voltage regulators May 24, 2023 Issued
Array ( [id] => 20539009 [patent_doc_number] => 12556089 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-02-17 [patent_title] => Switching converter [patent_app_type] => utility [patent_app_number] => 18/313785 [patent_app_country] => US [patent_app_date] => 2023-05-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 21 [patent_figures_cnt] => 24 [patent_no_of_words] => 0 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 117 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18313785 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/313785
Switching converter May 7, 2023 Issued
Array ( [id] => 19560681 [patent_doc_number] => 20240372473 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-11-07 [patent_title] => METHODS AND SYSTEMS OF A MULTI-PHASE SWITCHING POWER CONVERTER [patent_app_type] => utility [patent_app_number] => 18/313105 [patent_app_country] => US [patent_app_date] => 2023-05-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10066 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 133 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18313105 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/313105
METHODS AND SYSTEMS OF A MULTI-PHASE SWITCHING POWER CONVERTER May 4, 2023 Abandoned
Array ( [id] => 19421442 [patent_doc_number] => 20240297566 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-09-05 [patent_title] => EARLY TRANSIENT LOAD DETECTION IN VOLTAGE CONVERTERS [patent_app_type] => utility [patent_app_number] => 18/309096 [patent_app_country] => US [patent_app_date] => 2023-04-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11771 [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] => 18309096 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/309096
EARLY TRANSIENT LOAD DETECTION IN VOLTAGE CONVERTERS Apr 27, 2023 Pending
Array ( [id] => 18744054 [patent_doc_number] => 20230353042 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-11-02 [patent_title] => VOLTAGE STRESS MITIGATION IN THREE-LEVEL POWER SUPPLY [patent_app_type] => utility [patent_app_number] => 18/306797 [patent_app_country] => US [patent_app_date] => 2023-04-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6847 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 67 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18306797 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/306797
VOLTAGE STRESS MITIGATION IN THREE-LEVEL POWER SUPPLY Apr 24, 2023 Pending
Array ( [id] => 19957642 [patent_doc_number] => 12328063 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-06-10 [patent_title] => Totem pole power factor correction circuit [patent_app_type] => utility [patent_app_number] => 18/138587 [patent_app_country] => US [patent_app_date] => 2023-04-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 16 [patent_figures_cnt] => 16 [patent_no_of_words] => 4538 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 371 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18138587 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/138587
Totem pole power factor correction circuit Apr 23, 2023 Issued
Array ( [id] => 18730051 [patent_doc_number] => 20230344349 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-10-26 [patent_title] => UNIVERSAL BUCK-BOOST TOPOLOGY WITH AN ACTIVE POSITIVE HOLDUP VOLTAGE [patent_app_type] => utility [patent_app_number] => 18/137747 [patent_app_country] => US [patent_app_date] => 2023-04-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4587 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 50 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18137747 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/137747
UNIVERSAL BUCK-BOOST TOPOLOGY WITH AN ACTIVE POSITIVE HOLDUP VOLTAGE Apr 20, 2023 Abandoned
Array ( [id] => 18730050 [patent_doc_number] => 20230344348 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-10-26 [patent_title] => UNIVERSAL BUCK-BOOST TOPOLOGY WITH AN ACTIVE NEGATIVE HOLDUP VOLTAGE [patent_app_type] => utility [patent_app_number] => 18/137474 [patent_app_country] => US [patent_app_date] => 2023-04-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4600 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [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] => 18137474 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/137474
UNIVERSAL BUCK-BOOST TOPOLOGY WITH AN ACTIVE NEGATIVE HOLDUP VOLTAGE Apr 20, 2023 Abandoned
Array ( [id] => 18832343 [patent_doc_number] => 20230400870 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-12-14 [patent_title] => VOLTAGE REGULATOR AND ELECTRONIC DEVICE INCLUDING SAME [patent_app_type] => utility [patent_app_number] => 18/137698 [patent_app_country] => US [patent_app_date] => 2023-04-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9010 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 142 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18137698 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/137698
Voltage regulator and electronic device including same Apr 20, 2023 Issued
Array ( [id] => 18730030 [patent_doc_number] => 20230344328 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-10-26 [patent_title] => CURRENT SAMPLING CIRCUIT AND MULTI-LEVEL CONVERTER [patent_app_type] => utility [patent_app_number] => 18/135248 [patent_app_country] => US [patent_app_date] => 2023-04-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4457 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 98 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18135248 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/135248
CURRENT SAMPLING CIRCUIT AND MULTI-LEVEL CONVERTER Apr 16, 2023 Issued
Array ( [id] => 18696989 [patent_doc_number] => 20230327445 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-10-12 [patent_title] => CONVERTER AND METHOD FOR OPERATING A CONVERTER [patent_app_type] => utility [patent_app_number] => 18/297761 [patent_app_country] => US [patent_app_date] => 2023-04-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2463 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 74 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18297761 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/297761
CONVERTER AND METHOD FOR OPERATING A CONVERTER Apr 9, 2023 Pending
Array ( [id] => 18744052 [patent_doc_number] => 20230353040 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-11-02 [patent_title] => POWER CONVERSION CONTROL DEVICE, POWER CONVERSION SYSTEM, POWER CONVERSION CONTROL METHOD, AND RECORDING MEDIUM [patent_app_type] => utility [patent_app_number] => 18/295637 [patent_app_country] => US [patent_app_date] => 2023-04-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4991 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -4 [patent_words_short_claim] => 113 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18295637 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/295637
POWER CONVERSION CONTROL DEVICE, POWER CONVERSION SYSTEM, POWER CONVERSION CONTROL METHOD, AND RECORDING MEDIUM Apr 3, 2023 Pending
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