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] => 20244588 [patent_doc_number] => 12424922 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-09-23 [patent_title] => Power supply device, circuit control method, and power supply system [patent_app_type] => utility [patent_app_number] => 18/147907 [patent_app_country] => US [patent_app_date] => 2022-12-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 8 [patent_no_of_words] => 3535 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 429 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18147907 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/147907
Power supply device, circuit control method, and power supply system Dec 28, 2022 Issued
Array ( [id] => 19782016 [patent_doc_number] => 12231063 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-02-18 [patent_title] => Power conversion device, control device for power conversion device, and power conversion control method [patent_app_type] => utility [patent_app_number] => 18/088963 [patent_app_country] => US [patent_app_date] => 2022-12-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 12 [patent_no_of_words] => 11239 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 190 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18088963 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/088963
Power conversion device, control device for power conversion device, and power conversion control method Dec 26, 2022 Issued
Array ( [id] => 19874127 [patent_doc_number] => 12267003 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-04-01 [patent_title] => Power converter and control method for power converter [patent_app_type] => utility [patent_app_number] => 18/145267 [patent_app_country] => US [patent_app_date] => 2022-12-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 3291 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 294 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18145267 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/145267
Power converter and control method for power converter Dec 21, 2022 Issued
Array ( [id] => 18586555 [patent_doc_number] => 20230268820 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-08-24 [patent_title] => POWER CONVERTER [patent_app_type] => utility [patent_app_number] => 18/086481 [patent_app_country] => US [patent_app_date] => 2022-12-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6497 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -20 [patent_words_short_claim] => 375 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18086481 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/086481
Power converter Dec 20, 2022 Issued
Array ( [id] => 18515207 [patent_doc_number] => 20230231486 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-07-20 [patent_title] => SWITCH CONTROL CIRCUIT AND POWER CONVERTER COMPRISING THE SAME [patent_app_type] => utility [patent_app_number] => 18/084835 [patent_app_country] => US [patent_app_date] => 2022-12-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9664 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [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] => 18084835 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/084835
SWITCH CONTROL CIRCUIT AND POWER CONVERTER COMPRISING THE SAME Dec 19, 2022 Pending
Array ( [id] => 18457088 [patent_doc_number] => 20230198370 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-06-22 [patent_title] => INSULATED POWER SUPPLY APPARATUS [patent_app_type] => utility [patent_app_number] => 18/068549 [patent_app_country] => US [patent_app_date] => 2022-12-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6635 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 201 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18068549 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/068549
Insulated power supply apparatus Dec 19, 2022 Issued
Array ( [id] => 19253509 [patent_doc_number] => 20240204506 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-06-20 [patent_title] => PROTECTION SYSTEM AND PROTECTION METHOD FOR POWER CONVERTERS [patent_app_type] => utility [patent_app_number] => 18/067208 [patent_app_country] => US [patent_app_date] => 2022-12-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10512 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 178 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18067208 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/067208
Protection system and protection method for power converters Dec 15, 2022 Issued
Array ( [id] => 19972707 [patent_doc_number] => 12341331 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-06-24 [patent_title] => Methods and systems for managing an insulation fault in an electrical installation [patent_app_type] => utility [patent_app_number] => 18/080209 [patent_app_country] => US [patent_app_date] => 2022-12-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 1164 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 168 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18080209 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/080209
Methods and systems for managing an insulation fault in an electrical installation Dec 12, 2022 Issued
Array ( [id] => 18586556 [patent_doc_number] => 20230268821 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-08-24 [patent_title] => A NOVEL LLC RESONANT CONVERTER WITH HIGH RELIABILITY [patent_app_type] => utility [patent_app_number] => 18/074495 [patent_app_country] => US [patent_app_date] => 2022-12-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7396 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 62 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18074495 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/074495
LLC resonant converter with high reliability Dec 3, 2022 Issued
Array ( [id] => 19727582 [patent_doc_number] => 20250030333 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-01-23 [patent_title] => TRANSISTOR FAILURE DETECTION IN A POWER MODULE FROM THE PHASE VOLTAGE [patent_app_type] => utility [patent_app_number] => 18/715129 [patent_app_country] => US [patent_app_date] => 2022-12-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7207 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 501 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18715129 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/715129
TRANSISTOR FAILURE DETECTION IN A POWER MODULE FROM THE PHASE VOLTAGE Dec 1, 2022 Pending
Array ( [id] => 18584518 [patent_doc_number] => 20230266781 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-08-24 [patent_title] => REFERENCE VOLTAGE AUTO-SWITCHING MECHANISM USED IN REGULATOR FOR SAVING MORE POWER IN LOW-POWER MODE [patent_app_type] => utility [patent_app_number] => 18/072724 [patent_app_country] => US [patent_app_date] => 2022-12-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3310 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 76 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18072724 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/072724
Reference voltage auto-switching mechanism used in regulator for saving more power in low-power mode Nov 30, 2022 Issued
Array ( [id] => 19147127 [patent_doc_number] => 20240146176 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-02 [patent_title] => METHOD OF CONTROLLING PHASE SHIFT PULSE WIDTH MODULATION OF POWER CONVERTER [patent_app_type] => utility [patent_app_number] => 17/993976 [patent_app_country] => US [patent_app_date] => 2022-11-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4022 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 101 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17993976 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/993976
METHOD OF CONTROLLING PHASE SHIFT PULSE WIDTH MODULATION OF POWER CONVERTER Nov 23, 2022 Pending
Array ( [id] => 18991759 [patent_doc_number] => 20240063728 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-22 [patent_title] => ELECTRONIC TRANSFORMER AND THREE-PHASE FOUR-WIRE POWER SYSTEM THEREOF [patent_app_type] => utility [patent_app_number] => 18/055415 [patent_app_country] => US [patent_app_date] => 2022-11-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5242 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 148 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18055415 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/055415
Electronic transformer and three-phase four-wire power system thereof Nov 14, 2022 Issued
Array ( [id] => 19935538 [patent_doc_number] => 12308748 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-05-20 [patent_title] => Control method and control circuit of switched-mode power supply, and switched-mode power supply [patent_app_type] => utility [patent_app_number] => 17/981372 [patent_app_country] => US [patent_app_date] => 2022-11-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 7 [patent_no_of_words] => 0 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 203 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17981372 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/981372
Control method and control circuit of switched-mode power supply, and switched-mode power supply Nov 3, 2022 Issued
Array ( [id] => 19987510 [patent_doc_number] => 20250125732 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-04-17 [patent_title] => POWER CONVERTER [patent_app_type] => utility [patent_app_number] => 18/704359 [patent_app_country] => US [patent_app_date] => 2022-10-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11027 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [patent_words_short_claim] => 534 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18704359 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/704359
POWER CONVERTER Oct 27, 2022 Pending
Array ( [id] => 19583030 [patent_doc_number] => 12149162 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-11-19 [patent_title] => Gate drive apparatus and control method for switched capacitor converter [patent_app_type] => utility [patent_app_number] => 17/933510 [patent_app_country] => US [patent_app_date] => 2022-09-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 6018 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 2 [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] => 17933510 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/933510
Gate drive apparatus and control method for switched capacitor converter Sep 19, 2022 Issued
Array ( [id] => 19038985 [patent_doc_number] => 20240088800 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-03-14 [patent_title] => SWITCHING-CYCLE VOLTAGE DEVIATION CONTROL FOR MODULAR MULTILEVEL CONVERTERS [patent_app_type] => utility [patent_app_number] => 17/932079 [patent_app_country] => US [patent_app_date] => 2022-09-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6885 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 115 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17932079 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/932079
SWITCHING-CYCLE VOLTAGE DEVIATION CONTROL FOR MODULAR MULTILEVEL CONVERTERS Sep 13, 2022 Pending
Array ( [id] => 19016841 [patent_doc_number] => 11923789 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-03-05 [patent_title] => Power converter [patent_app_type] => utility [patent_app_number] => 17/901389 [patent_app_country] => US [patent_app_date] => 2022-09-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 13 [patent_no_of_words] => 8074 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 177 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17901389 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/901389
Power converter Aug 31, 2022 Issued
Array ( [id] => 19858674 [patent_doc_number] => 12261535 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-03-25 [patent_title] => Isolated power converter having a voltage supply circuit [patent_app_type] => utility [patent_app_number] => 17/893449 [patent_app_country] => US [patent_app_date] => 2022-08-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 5771 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 168 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17893449 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/893449
Isolated power converter having a voltage supply circuit Aug 22, 2022 Issued
Array ( [id] => 20375679 [patent_doc_number] => 12483124 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-11-25 [patent_title] => Buck converter with high power efficiency [patent_app_type] => utility [patent_app_number] => 17/821215 [patent_app_country] => US [patent_app_date] => 2022-08-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 0 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 103 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17821215 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/821215
Buck converter with high power efficiency Aug 21, 2022 Issued
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