Search

Shahzeb K. Ahmad

Examiner (ID: 15391, Phone: (571)272-0978 , Office: P/2838 )

Most Active Art Unit
2838
Art Unit(s)
2838, 2839
Total Applications
555
Issued Applications
437
Pending Applications
53
Abandoned Applications
81

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 18951473 [patent_doc_number] => 11894782 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-02-06 [patent_title] => Pulse Width Modulation method for Cascaded H-bridge converter [patent_app_type] => utility [patent_app_number] => 17/932062 [patent_app_country] => US [patent_app_date] => 2022-09-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 15 [patent_figures_cnt] => 19 [patent_no_of_words] => 8280 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 205 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17932062 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/932062
Pulse Width Modulation method for Cascaded H-bridge converter Sep 13, 2022 Issued
Array ( [id] => 19796797 [patent_doc_number] => 12237776 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-02-25 [patent_title] => Converter and power adapter [patent_app_type] => utility [patent_app_number] => 17/941030 [patent_app_country] => US [patent_app_date] => 2022-09-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 17 [patent_no_of_words] => 10811 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 249 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17941030 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/941030
Converter and power adapter Sep 8, 2022 Issued
Array ( [id] => 18223623 [patent_doc_number] => 20230062617 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-03-02 [patent_title] => POWER CONVERTER AND METHOD FOR OPERATING A POWER CONVERTER [patent_app_type] => utility [patent_app_number] => 17/902071 [patent_app_country] => US [patent_app_date] => 2022-09-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3026 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 66 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17902071 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/902071
Power converter and method for operating a power converter Sep 1, 2022 Issued
Array ( [id] => 18210478 [patent_doc_number] => 20230056740 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-02-23 [patent_title] => VARIABLE CONTROLLER AND ASSOCIATED CONTROL METHODS [patent_app_type] => utility [patent_app_number] => 17/821257 [patent_app_country] => US [patent_app_date] => 2022-08-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8740 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -20 [patent_words_short_claim] => 77 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17821257 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/821257
Variable controller and associated control methods Aug 21, 2022 Issued
Array ( [id] => 20360536 [patent_doc_number] => 12476544 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-11-18 [patent_title] => Switching converter [patent_app_type] => utility [patent_app_number] => 18/577781 [patent_app_country] => US [patent_app_date] => 2022-08-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 8 [patent_no_of_words] => 2139 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 142 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18577781 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/577781
Switching converter Aug 17, 2022 Issued
Array ( [id] => 18624309 [patent_doc_number] => 11757371 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2023-09-12 [patent_title] => Pulse-width modulation for high-efficiency power conversion [patent_app_type] => utility [patent_app_number] => 17/879562 [patent_app_country] => US [patent_app_date] => 2022-08-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 12 [patent_no_of_words] => 10031 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [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] => 17879562 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/879562
Pulse-width modulation for high-efficiency power conversion Aug 1, 2022 Issued
Array ( [id] => 19508308 [patent_doc_number] => 12119740 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-10-15 [patent_title] => DC/DC converter and communication power supply with common mode noise suppression [patent_app_type] => utility [patent_app_number] => 17/879579 [patent_app_country] => US [patent_app_date] => 2022-08-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 16 [patent_no_of_words] => 8940 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 200 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17879579 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/879579
DC/DC converter and communication power supply with common mode noise suppression Aug 1, 2022 Issued
Array ( [id] => 19393501 [patent_doc_number] => 20240283371 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-22 [patent_title] => POWER CONVERTER DEVICE [patent_app_type] => utility [patent_app_number] => 18/681166 [patent_app_country] => US [patent_app_date] => 2022-07-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3759 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -2 [patent_words_short_claim] => 118 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18681166 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/681166
POWER CONVERTER DEVICE Jul 21, 2022 Pending
Array ( [id] => 19734244 [patent_doc_number] => 12212250 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-01-28 [patent_title] => Control method of three-phase multi-level inverter and inverter system [patent_app_type] => utility [patent_app_number] => 17/867827 [patent_app_country] => US [patent_app_date] => 2022-07-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 18 [patent_no_of_words] => 10231 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 195 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17867827 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/867827
Control method of three-phase multi-level inverter and inverter system Jul 18, 2022 Issued
Array ( [id] => 19168885 [patent_doc_number] => 11984804 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-05-14 [patent_title] => Resonant charge pump circuit [patent_app_type] => utility [patent_app_number] => 17/856581 [patent_app_country] => US [patent_app_date] => 2022-07-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 13 [patent_no_of_words] => 3777 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 201 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17856581 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/856581
Resonant charge pump circuit Jun 30, 2022 Issued
Array ( [id] => 18840525 [patent_doc_number] => 11848611 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-12-19 [patent_title] => Switching power supply device [patent_app_type] => utility [patent_app_number] => 17/805110 [patent_app_country] => US [patent_app_date] => 2022-06-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 8 [patent_no_of_words] => 5873 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 272 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17805110 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/805110
Switching power supply device Jun 1, 2022 Issued
Array ( [id] => 19168896 [patent_doc_number] => 11984815 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-05-14 [patent_title] => Modular isolated power electronics converter for HVAC/MVAC to LVDC power conversion [patent_app_type] => utility [patent_app_number] => 17/825211 [patent_app_country] => US [patent_app_date] => 2022-05-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 17 [patent_figures_cnt] => 19 [patent_no_of_words] => 6775 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 146 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17825211 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/825211
Modular isolated power electronics converter for HVAC/MVAC to LVDC power conversion May 25, 2022 Issued
Array ( [id] => 18790105 [patent_doc_number] => 20230378884 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-11-23 [patent_title] => POWER TRANSISTOR CONVERSION DEVICE [patent_app_type] => utility [patent_app_number] => 17/751135 [patent_app_country] => US [patent_app_date] => 2022-05-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1826 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [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] => 17751135 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/751135
Power transistor conversion device May 22, 2022 Issued
Array ( [id] => 18025103 [patent_doc_number] => 20220376602 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-11-24 [patent_title] => CONVERSION CIRCUIT AND CONTROL METHOD THEREOF [patent_app_type] => utility [patent_app_number] => 17/745984 [patent_app_country] => US [patent_app_date] => 2022-05-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7377 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 237 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17745984 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/745984
CONVERSION CIRCUIT AND CONTROL METHOD THEREOF May 16, 2022 Abandoned
Array ( [id] => 19671410 [patent_doc_number] => 12184186 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-12-31 [patent_title] => Power supply with active power buffer [patent_app_type] => utility [patent_app_number] => 17/663141 [patent_app_country] => US [patent_app_date] => 2022-05-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 14 [patent_no_of_words] => 12064 [patent_no_of_claims] => 27 [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] => 17663141 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/663141
Power supply with active power buffer May 11, 2022 Issued
Array ( [id] => 18529015 [patent_doc_number] => 11716021 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2023-08-01 [patent_title] => Power converter for providing negative voltage [patent_app_type] => utility [patent_app_number] => 17/738070 [patent_app_country] => US [patent_app_date] => 2022-05-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 4459 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 223 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17738070 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/738070
Power converter for providing negative voltage May 5, 2022 Issued
Array ( [id] => 20147126 [patent_doc_number] => 12381475 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-08-05 [patent_title] => Power filtration system [patent_app_type] => utility [patent_app_number] => 17/737200 [patent_app_country] => US [patent_app_date] => 2022-05-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 7 [patent_no_of_words] => 0 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 143 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17737200 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/737200
Power filtration system May 4, 2022 Issued
Array ( [id] => 18744048 [patent_doc_number] => 20230353036 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-11-02 [patent_title] => POWER CONVERSION PHASES AND COUPLING INDUCTANCE [patent_app_type] => utility [patent_app_number] => 17/734339 [patent_app_country] => US [patent_app_date] => 2022-05-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10330 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 65 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17734339 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/734339
Power conversion phases and coupling inductance May 1, 2022 Issued
Array ( [id] => 18343679 [patent_doc_number] => 11641164 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-05-02 [patent_title] => Power conversion circuit and power conversion apparatus with same [patent_app_type] => utility [patent_app_number] => 17/731261 [patent_app_country] => US [patent_app_date] => 2022-04-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 12 [patent_no_of_words] => 11313 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 288 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17731261 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/731261
Power conversion circuit and power conversion apparatus with same Apr 27, 2022 Issued
Array ( [id] => 18782684 [patent_doc_number] => 11824459 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-11-21 [patent_title] => Resonant converter with synchronous average harmonic current control [patent_app_type] => utility [patent_app_number] => 17/727757 [patent_app_country] => US [patent_app_date] => 2022-04-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 21 [patent_no_of_words] => 7275 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 201 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17727757 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/727757
Resonant converter with synchronous average harmonic current control Apr 23, 2022 Issued
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