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] => 19129050 [patent_doc_number] => 20240134403 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-04-25 [patent_title] => ACCELERATED TRANSIENT RESPONSE OPERATIONAL AMPLIFIER CIRCUIT [patent_app_type] => utility [patent_app_number] => 18/402906 [patent_app_country] => US [patent_app_date] => 2024-01-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4974 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [patent_words_short_claim] => 111 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18402906 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/402906
Accelerated transient response operational amplifier circuit Jan 2, 2024 Issued
Array ( [id] => 19131564 [patent_doc_number] => 20240136917 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-04-25 [patent_title] => APPARATUS AND METHOD FOR LIMITING INRUSH CURRENT AND EXTENDING HOLD-UP TIME IN AN AC-DC POWER CONVERTION APPARATUS [patent_app_type] => utility [patent_app_number] => 18/399724 [patent_app_country] => US [patent_app_date] => 2023-12-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9386 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 168 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18399724 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/399724
APPARATUS AND METHOD FOR LIMITING INRUSH CURRENT AND EXTENDING HOLD-UP TIME IN AN AC-DC POWER CONVERTION APPARATUS Dec 28, 2023 Pending
Array ( [id] => 19466086 [patent_doc_number] => 20240319756 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-09-26 [patent_title] => LOW DROPOUT REGULATOR [patent_app_type] => utility [patent_app_number] => 18/540648 [patent_app_country] => US [patent_app_date] => 2023-12-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6468 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 182 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18540648 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/540648
LOW DROPOUT REGULATOR Dec 13, 2023 Pending
Array ( [id] => 19951574 [patent_doc_number] => 12322948 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-06-03 [patent_title] => Over current protection circuit and over current protection method thereof [patent_app_type] => utility [patent_app_number] => 18/539225 [patent_app_country] => US [patent_app_date] => 2023-12-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 6 [patent_no_of_words] => 1080 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 64 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18539225 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/539225
Over current protection circuit and over current protection method thereof Dec 12, 2023 Issued
Array ( [id] => 19086755 [patent_doc_number] => 20240113556 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-04-04 [patent_title] => POWER SYSTEM AND POWER SYSTEM CONTROL METHOD [patent_app_type] => utility [patent_app_number] => 18/527619 [patent_app_country] => US [patent_app_date] => 2023-12-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10366 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 180 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18527619 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/527619
POWER SYSTEM AND POWER SYSTEM CONTROL METHOD Dec 3, 2023 Pending
Array ( [id] => 19866951 [patent_doc_number] => 20250105737 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-03-27 [patent_title] => Switch Control Circuit and Method, Power Conversion System [patent_app_type] => utility [patent_app_number] => 18/527199 [patent_app_country] => US [patent_app_date] => 2023-12-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 12645 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 187 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18527199 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/527199
Switch Control Circuit and Method, Power Conversion System Nov 30, 2023 Pending
Array ( [id] => 20042872 [patent_doc_number] => 20250181094 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-06-05 [patent_title] => DIGITALLY CONTROLLED, DIRECT SLEW RATE ENHANCEMENT FOR LDOS [patent_app_type] => utility [patent_app_number] => 18/524334 [patent_app_country] => US [patent_app_date] => 2023-11-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 0 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 97 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18524334 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/524334
DIGITALLY CONTROLLED, DIRECT SLEW RATE ENHANCEMENT FOR LDOS Nov 29, 2023 Pending
Array ( [id] => 19747585 [patent_doc_number] => 20250036150 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-01-30 [patent_title] => DIGITAL LOW DROPOUT REGULATOR AND ELECTRONIC DEVICE USING THE SAME [patent_app_type] => utility [patent_app_number] => 18/524449 [patent_app_country] => US [patent_app_date] => 2023-11-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3840 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 99 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18524449 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/524449
DIGITAL LOW DROPOUT REGULATOR AND ELECTRONIC DEVICE USING THE SAME Nov 29, 2023 Pending
Array ( [id] => 20132561 [patent_doc_number] => 12374879 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-07-29 [patent_title] => Circuit assembly and method for providing electric power for large DC loads [patent_app_type] => utility [patent_app_number] => 18/524056 [patent_app_country] => US [patent_app_date] => 2023-11-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 0 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 242 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18524056 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/524056
Circuit assembly and method for providing electric power for large DC loads Nov 29, 2023 Issued
Array ( [id] => 19035664 [patent_doc_number] => 20240085479 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-03-14 [patent_title] => SAFETY FAULT INTERRUPTER CIRCUIT WITH POWER FAULT MONITOR [patent_app_type] => utility [patent_app_number] => 18/519496 [patent_app_country] => US [patent_app_date] => 2023-11-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7636 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [patent_words_short_claim] => 108 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18519496 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/519496
Safety fault interrupter circuit with power fault monitor Nov 26, 2023 Issued
Array ( [id] => 19516458 [patent_doc_number] => 20240348144 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-10-17 [patent_title] => ZERO-VOLTAGE AND ZERO-CURRENT SWITCHING CONVERTOR WITH TAPPED INDUCTOR [patent_app_type] => utility [patent_app_number] => 18/515953 [patent_app_country] => US [patent_app_date] => 2023-11-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3510 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [patent_words_short_claim] => 196 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18515953 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/515953
Zero-voltage and zero-current switching convertor with tapped inductor Nov 20, 2023 Issued
Array ( [id] => 20565187 [patent_doc_number] => 12567802 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-03-03 [patent_title] => Voltage convertor module including a lead-frame, a unitary bare die and a molding body [patent_app_type] => utility [patent_app_number] => 18/516826 [patent_app_country] => US [patent_app_date] => 2023-11-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 10 [patent_no_of_words] => 0 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 416 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18516826 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/516826
Voltage convertor module including a lead-frame, a unitary bare die and a molding body Nov 20, 2023 Issued
Array ( [id] => 19206855 [patent_doc_number] => 20240178754 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-30 [patent_title] => POWER CONVERTER [patent_app_type] => utility [patent_app_number] => 18/514390 [patent_app_country] => US [patent_app_date] => 2023-11-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8371 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [patent_words_short_claim] => 266 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18514390 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/514390
POWER CONVERTER Nov 19, 2023 Pending
Array ( [id] => 19206858 [patent_doc_number] => 20240178757 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-30 [patent_title] => SERIES CAPACITOR BUCK CONVERTER WITH PRECHARGE CIRCUIT [patent_app_type] => utility [patent_app_number] => 18/514427 [patent_app_country] => US [patent_app_date] => 2023-11-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3889 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 303 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18514427 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/514427
SERIES CAPACITOR BUCK CONVERTER WITH PRECHARGE CIRCUIT Nov 19, 2023 Pending
Array ( [id] => 18989488 [patent_doc_number] => 20240061457 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-22 [patent_title] => LINEAR POWER SUPPLY, ELECTRONIC DEVICE, AND VEHICLE [patent_app_type] => utility [patent_app_number] => 18/501474 [patent_app_country] => US [patent_app_date] => 2023-11-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 12976 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 102 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18501474 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/501474
LINEAR POWER SUPPLY, ELECTRONIC DEVICE, AND VEHICLE Nov 2, 2023 Pending
Array ( [id] => 19349956 [patent_doc_number] => 20240258920 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-01 [patent_title] => CONTROL OF HYSTERETIC CURRENT MODE MULTILEVEL BUCK CONVERTER [patent_app_type] => utility [patent_app_number] => 18/500360 [patent_app_country] => US [patent_app_date] => 2023-11-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10157 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 202 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18500360 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/500360
CONTROL OF HYSTERETIC CURRENT MODE MULTILEVEL BUCK CONVERTER Nov 1, 2023 Pending
Array ( [id] => 19147132 [patent_doc_number] => 20240146181 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-02 [patent_title] => METHOD FOR DRIVING TOPOLOGICAL SWITCHES OF A HALF-BRIDGE IN A POWER MODULE OF AN INVERTER [patent_app_type] => utility [patent_app_number] => 18/500790 [patent_app_country] => US [patent_app_date] => 2023-11-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2598 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 89 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18500790 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/500790
METHOD FOR DRIVING TOPOLOGICAL SWITCHES OF A HALF-BRIDGE IN A POWER MODULE OF AN INVERTER Nov 1, 2023 Pending
Array ( [id] => 19469039 [patent_doc_number] => 20240322709 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-09-26 [patent_title] => PHASE INVERTER USING TRANSFORMER AND TRANSISTOR SWITCH [patent_app_type] => utility [patent_app_number] => 18/386241 [patent_app_country] => US [patent_app_date] => 2023-11-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4872 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 310 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18386241 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/386241
PHASE INVERTER USING TRANSFORMER AND TRANSISTOR SWITCH Oct 31, 2023 Issued
Array ( [id] => 19222183 [patent_doc_number] => 20240186887 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-06-06 [patent_title] => SWITCHING CONVERTER HAVING AUDIBLE NOISE SUPPRESSION AND CONVERSION CONTROL CIRCUIT AND METHOD THEREOF [patent_app_type] => utility [patent_app_number] => 18/500072 [patent_app_country] => US [patent_app_date] => 2023-11-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6274 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -28 [patent_words_short_claim] => 151 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18500072 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/500072
SWITCHING CONVERTER HAVING AUDIBLE NOISE SUPPRESSION AND CONVERSION CONTROL CIRCUIT AND METHOD THEREOF Oct 31, 2023 Pending
Array ( [id] => 20204467 [patent_doc_number] => 12407256 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-09-02 [patent_title] => Switching regulator and control method thereof [patent_app_type] => utility [patent_app_number] => 18/493826 [patent_app_country] => US [patent_app_date] => 2023-10-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 16 [patent_figures_cnt] => 44 [patent_no_of_words] => 4657 [patent_no_of_claims] => 44 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 281 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18493826 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/493826
Switching regulator and control method thereof Oct 24, 2023 Issued
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