Search

Devon C. Kramer

Supervisory Patent Examiner (ID: 3424, Phone: (571)272-7118 , Office: P/3746 )

Most Active Art Unit
3683
Art Unit(s)
3741, 3683, 3746, 3613
Total Applications
1041
Issued Applications
673
Pending Applications
85
Abandoned Applications
284

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 19662755 [patent_doc_number] => 20240429820 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-12-26 [patent_title] => DC-TO-DC CONVERTER CONTROL METHOD AND SYSTEM BASED ON BACKSTEPPING SUPER-TWISTING [patent_app_type] => utility [patent_app_number] => 18/509927 [patent_app_country] => US [patent_app_date] => 2023-11-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6332 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [patent_words_short_claim] => 539 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18509927 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/509927
DC-to-DC converter control method and system based on backstepping super-twisting Nov 14, 2023 Issued
Array ( [id] => 19702151 [patent_doc_number] => 12196167 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-01-14 [patent_title] => Battery pack for power equipment [patent_app_type] => utility [patent_app_number] => 18/508157 [patent_app_country] => US [patent_app_date] => 2023-11-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 15 [patent_figures_cnt] => 23 [patent_no_of_words] => 5190 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 68 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18508157 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/508157
Battery pack for power equipment Nov 12, 2023 Issued
Array ( [id] => 20611502 [patent_doc_number] => 12587111 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-03-24 [patent_title] => Quasi multi-level converter [patent_app_type] => utility [patent_app_number] => 18/507081 [patent_app_country] => US [patent_app_date] => 2023-11-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 8 [patent_no_of_words] => 4186 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 3 [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] => 18507081 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/507081
Quasi multi-level converter Nov 11, 2023 Issued
Array ( [id] => 20611501 [patent_doc_number] => 12587110 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-03-24 [patent_title] => Quasi three-level power converter [patent_app_type] => utility [patent_app_number] => 18/506792 [patent_app_country] => US [patent_app_date] => 2023-11-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 13 [patent_no_of_words] => 3909 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 207 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18506792 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/506792
Quasi three-level power converter Nov 9, 2023 Issued
Array ( [id] => 19445090 [patent_doc_number] => 12095386 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2024-09-17 [patent_title] => Multi-level inverter with mixed device types [patent_app_type] => utility [patent_app_number] => 18/388446 [patent_app_country] => US [patent_app_date] => 2023-11-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 17 [patent_figures_cnt] => 17 [patent_no_of_words] => 4704 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 132 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18388446 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/388446
Multi-level inverter with mixed device types Nov 8, 2023 Issued
Array ( [id] => 19161829 [patent_doc_number] => 20240154536 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-09 [patent_title] => SWITCHING POWER SUPPLY CIRCUIT [patent_app_type] => utility [patent_app_number] => 18/384454 [patent_app_country] => US [patent_app_date] => 2023-10-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4028 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [patent_words_short_claim] => 267 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18384454 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/384454
Switching power supply circuit Oct 26, 2023 Issued
Array ( [id] => 19758624 [patent_doc_number] => 20250047189 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-02-06 [patent_title] => CONTROL DEVICE [patent_app_type] => utility [patent_app_number] => 18/492976 [patent_app_country] => US [patent_app_date] => 2023-10-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8973 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 232 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18492976 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/492976
Control device Oct 23, 2023 Issued
Array ( [id] => 19147122 [patent_doc_number] => 20240146171 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-02 [patent_title] => Power Conversion Device and Apparatus [patent_app_type] => utility [patent_app_number] => 18/490892 [patent_app_country] => US [patent_app_date] => 2023-10-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13675 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 94 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18490892 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/490892
Power Conversion Device and Apparatus Oct 19, 2023 Pending
Array ( [id] => 19238106 [patent_doc_number] => 20240195301 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-06-13 [patent_title] => SYSTEMS AND METHODS FOR AUTOMATIC DETERMINATION OF STATE OF SWITCHES IN POWER CONVERTERS [patent_app_type] => utility [patent_app_number] => 18/488952 [patent_app_country] => US [patent_app_date] => 2023-10-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9737 [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] => 18488952 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/488952
Systems and methods for automatic determination of state of switches in power converters Oct 16, 2023 Issued
Array ( [id] => 19671279 [patent_doc_number] => 12184054 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-12-31 [patent_title] => Overcurrent protection circuit [patent_app_type] => utility [patent_app_number] => 18/484721 [patent_app_country] => US [patent_app_date] => 2023-10-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 28 [patent_figures_cnt] => 28 [patent_no_of_words] => 18698 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 85 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18484721 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/484721
Overcurrent protection circuit Oct 10, 2023 Issued
Array ( [id] => 19117113 [patent_doc_number] => 20240128863 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-04-18 [patent_title] => FILTER CAPACITANCE ESTIMATION BY RESONANCE FREQUENCY DETERMINATION [patent_app_type] => utility [patent_app_number] => 18/480066 [patent_app_country] => US [patent_app_date] => 2023-10-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6617 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [patent_words_short_claim] => 38 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18480066 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/480066
Filter capacitance estimation by resonance frequency determination Oct 2, 2023 Issued
Array ( [id] => 20305814 [patent_doc_number] => 12451818 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-10-21 [patent_title] => Inverter [patent_app_type] => utility [patent_app_number] => 18/374785 [patent_app_country] => US [patent_app_date] => 2023-09-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 24 [patent_figures_cnt] => 25 [patent_no_of_words] => 14217 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 1047 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18374785 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/374785
Inverter Sep 28, 2023 Issued
Array ( [id] => 18899254 [patent_doc_number] => 20240014739 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-01-11 [patent_title] => Slew Rate Detection in Power Converter with Digital Current Mode Control [patent_app_type] => utility [patent_app_number] => 18/474677 [patent_app_country] => US [patent_app_date] => 2023-09-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10589 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 172 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18474677 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/474677
Slew rate detection in power converter with digital current mode control Sep 25, 2023 Issued
Array ( [id] => 20375694 [patent_doc_number] => 12483139 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-11-25 [patent_title] => Multi-level conversion circuit and control method for flying capacitor voltage thereof [patent_app_type] => utility [patent_app_number] => 18/372559 [patent_app_country] => US [patent_app_date] => 2023-09-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 22 [patent_figures_cnt] => 24 [patent_no_of_words] => 5196 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 408 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18372559 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/372559
Multi-level conversion circuit and control method for flying capacitor voltage thereof Sep 24, 2023 Issued
Array ( [id] => 20583162 [patent_doc_number] => 12575425 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-03-10 [patent_title] => Low-inductance power module [patent_app_type] => utility [patent_app_number] => 18/857467 [patent_app_country] => US [patent_app_date] => 2023-09-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 22 [patent_no_of_words] => 0 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 155 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18857467 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/857467
Low-inductance power module Sep 19, 2023 Issued
Array ( [id] => 20118666 [patent_doc_number] => 12368388 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-07-22 [patent_title] => Layout method for power supplies with three-phase integrated transformer and synchronous rectification [patent_app_type] => utility [patent_app_number] => 18/370185 [patent_app_country] => US [patent_app_date] => 2023-09-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 24 [patent_figures_cnt] => 27 [patent_no_of_words] => 6891 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 239 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18370185 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/370185
Layout method for power supplies with three-phase integrated transformer and synchronous rectification Sep 18, 2023 Issued
Array ( [id] => 19407860 [patent_doc_number] => 20240291371 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-29 [patent_title] => MULTI-FREQUENCY VOLTAGE CONVERTER [patent_app_type] => utility [patent_app_number] => 18/465709 [patent_app_country] => US [patent_app_date] => 2023-09-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4619 [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] => 18465709 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/465709
MULTI-FREQUENCY VOLTAGE CONVERTER Sep 11, 2023 Pending
Array ( [id] => 20229589 [patent_doc_number] => 12418248 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-09-16 [patent_title] => Photovoltaic system, inverter, and control method [patent_app_type] => utility [patent_app_number] => 18/463399 [patent_app_country] => US [patent_app_date] => 2023-09-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 15 [patent_no_of_words] => 8717 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 262 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18463399 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/463399
Photovoltaic system, inverter, and control method Sep 7, 2023 Issued
Array ( [id] => 19147123 [patent_doc_number] => 20240146172 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-02 [patent_title] => POWER ADAPTER WITH LIMITED POWER SOURCE FUNCTION AND CONTROL METHOD THEREOF [patent_app_type] => utility [patent_app_number] => 18/243303 [patent_app_country] => US [patent_app_date] => 2023-09-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5233 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 255 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18243303 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/243303
Power adapter with limited power source function and control method thereof Sep 6, 2023 Issued
Array ( [id] => 20375676 [patent_doc_number] => 12483121 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-11-25 [patent_title] => Power supply system and power factor correction control circuit and control method thereof [patent_app_type] => utility [patent_app_number] => 18/463244 [patent_app_country] => US [patent_app_date] => 2023-09-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 19 [patent_figures_cnt] => 28 [patent_no_of_words] => 5520 [patent_no_of_claims] => 28 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 153 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18463244 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/463244
Power supply system and power factor correction control circuit and control method thereof Sep 6, 2023 Issued
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