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] => 18840519 [patent_doc_number] => 11848605 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-12-19 [patent_title] => Power converter [patent_app_type] => utility [patent_app_number] => 17/426753 [patent_app_country] => US [patent_app_date] => 2019-09-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 21 [patent_figures_cnt] => 28 [patent_no_of_words] => 17134 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 220 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17426753 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/426753
Power converter Sep 12, 2019 Issued
Array ( [id] => 15333437 [patent_doc_number] => 20200007048 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-01-02 [patent_title] => POWER CONVERTER WITH ACTIVE CLAMP [patent_app_type] => utility [patent_app_number] => 16/569924 [patent_app_country] => US [patent_app_date] => 2019-09-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6181 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [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] => 16569924 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/569924
Power converter with active clamp Sep 12, 2019 Issued
Array ( [id] => 15333437 [patent_doc_number] => 20200007048 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-01-02 [patent_title] => POWER CONVERTER WITH ACTIVE CLAMP [patent_app_type] => utility [patent_app_number] => 16/569924 [patent_app_country] => US [patent_app_date] => 2019-09-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6181 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [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] => 16569924 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/569924
Power converter with active clamp Sep 12, 2019 Issued
Array ( [id] => 15333437 [patent_doc_number] => 20200007048 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-01-02 [patent_title] => POWER CONVERTER WITH ACTIVE CLAMP [patent_app_type] => utility [patent_app_number] => 16/569924 [patent_app_country] => US [patent_app_date] => 2019-09-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6181 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [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] => 16569924 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/569924
Power converter with active clamp Sep 12, 2019 Issued
Array ( [id] => 19230096 [patent_doc_number] => 12009741 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-06-11 [patent_title] => Power supply apparatus and control method of power supply apparatus [patent_app_type] => utility [patent_app_number] => 17/610437 [patent_app_country] => US [patent_app_date] => 2019-08-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 5 [patent_no_of_words] => 6941 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 174 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17610437 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/610437
Power supply apparatus and control method of power supply apparatus Aug 21, 2019 Issued
Array ( [id] => 17816975 [patent_doc_number] => 11422582 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-08-23 [patent_title] => Low power reference voltage generating circuit [patent_app_type] => utility [patent_app_number] => 16/543314 [patent_app_country] => US [patent_app_date] => 2019-08-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 9 [patent_no_of_words] => 5598 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 163 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16543314 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/543314
Low power reference voltage generating circuit Aug 15, 2019 Issued
Array ( [id] => 15186093 [patent_doc_number] => 20190363638 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-11-28 [patent_title] => BALANCING POWER DISTRIBUTION [patent_app_type] => utility [patent_app_number] => 16/534324 [patent_app_country] => US [patent_app_date] => 2019-08-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3752 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [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] => 16534324 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/534324
Balancing power distribution Aug 6, 2019 Issued
Array ( [id] => 17893687 [patent_doc_number] => 11456675 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-09-27 [patent_title] => Filter device and power converter [patent_app_type] => utility [patent_app_number] => 17/274743 [patent_app_country] => US [patent_app_date] => 2019-08-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 8 [patent_no_of_words] => 3973 [patent_no_of_claims] => 7 [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] => 17274743 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/274743
Filter device and power converter Aug 5, 2019 Issued
Array ( [id] => 16002415 [patent_doc_number] => 20200177078 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-06-04 [patent_title] => SELF-BIASED ACTIVE VOLTAGE DOUBLER FOR ENERGY HARVESTING SYSTEMS [patent_app_type] => utility [patent_app_number] => 16/531495 [patent_app_country] => US [patent_app_date] => 2019-08-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6385 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 105 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16531495 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/531495
SELF-BIASED ACTIVE VOLTAGE DOUBLER FOR ENERGY HARVESTING SYSTEMS Aug 4, 2019 Abandoned
Array ( [id] => 16617969 [patent_doc_number] => 20210036622 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-02-04 [patent_title] => LLCC SECONDARY OVERTONE RESONANT POWER CONVERTER [patent_app_type] => utility [patent_app_number] => 16/530394 [patent_app_country] => US [patent_app_date] => 2019-08-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4823 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 211 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16530394 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/530394
LLCC secondary overtone resonant power converter Aug 1, 2019 Issued
Array ( [id] => 15704677 [patent_doc_number] => 10608530 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2020-03-31 [patent_title] => Resonance switched tank converter with multiple conversion units [patent_app_type] => utility [patent_app_number] => 16/529038 [patent_app_country] => US [patent_app_date] => 2019-08-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 14 [patent_no_of_words] => 9703 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 438 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16529038 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/529038
Resonance switched tank converter with multiple conversion units Jul 31, 2019 Issued
Array ( [id] => 16615432 [patent_doc_number] => 20210034085 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-02-04 [patent_title] => Charge Pump Transient Response Optimization by Controlled Flying Capacitor Discharge During Bypass to Switching Mode Transition [patent_app_type] => utility [patent_app_number] => 16/528906 [patent_app_country] => US [patent_app_date] => 2019-08-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9456 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -23 [patent_words_short_claim] => 129 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16528906 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/528906
Charge pump transient response optimization by controlled flying capacitor discharge during bypass to switching mode transition Jul 31, 2019 Issued
Array ( [id] => 17717160 [patent_doc_number] => 11381163 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-07-05 [patent_title] => Resonant charge pump circuit with synchronized switching [patent_app_type] => utility [patent_app_number] => 16/528487 [patent_app_country] => US [patent_app_date] => 2019-07-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 13 [patent_no_of_words] => 3764 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 165 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16528487 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/528487
Resonant charge pump circuit with synchronized switching Jul 30, 2019 Issued
Array ( [id] => 15463509 [patent_doc_number] => 20200044579 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-02-06 [patent_title] => POWER CONVERSION DEVICE AND CONTROL METHOD [patent_app_type] => utility [patent_app_number] => 16/528495 [patent_app_country] => US [patent_app_date] => 2019-07-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13683 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 16528495 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/528495
Power conversion device with selective voltage control Jul 30, 2019 Issued
Array ( [id] => 17004270 [patent_doc_number] => 11083112 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-08-03 [patent_title] => Three-phase electronic control unit for enclosure air conditioners [patent_app_type] => utility [patent_app_number] => 16/520180 [patent_app_country] => US [patent_app_date] => 2019-07-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 16 [patent_figures_cnt] => 20 [patent_no_of_words] => 9618 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 290 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16520180 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/520180
Three-phase electronic control unit for enclosure air conditioners Jul 22, 2019 Issued
Array ( [id] => 16988395 [patent_doc_number] => 11075581 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-07-27 [patent_title] => Methods and apparatus to use a switched-mode power supply as a source of power in a service pack [patent_app_type] => utility [patent_app_number] => 16/513127 [patent_app_country] => US [patent_app_date] => 2019-07-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 6446 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 1 [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] => 16513127 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/513127
Methods and apparatus to use a switched-mode power supply as a source of power in a service pack Jul 15, 2019 Issued
Array ( [id] => 15504811 [patent_doc_number] => 20200052594 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-02-13 [patent_title] => CONVERTER OUTPUT STAGE WITH MOSFETS HAVING DIFFERENT CHARACTERISTICS [patent_app_type] => utility [patent_app_number] => 16/503603 [patent_app_country] => US [patent_app_date] => 2019-07-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4394 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 147 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16503603 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/503603
Converter output stage with MOSFETs having different characteristics Jul 3, 2019 Issued
Array ( [id] => 17166748 [patent_doc_number] => 11152862 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-10-19 [patent_title] => Power controllers and control methods for reducing output voltage ripple when line voltage is low [patent_app_type] => utility [patent_app_number] => 16/460206 [patent_app_country] => US [patent_app_date] => 2019-07-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 16 [patent_no_of_words] => 3750 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 100 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16460206 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/460206
Power controllers and control methods for reducing output voltage ripple when line voltage is low Jul 1, 2019 Issued
Array ( [id] => 16187485 [patent_doc_number] => 10720829 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2020-07-21 [patent_title] => Totem-pole bridgeless PFC conversion device and method of operating the same [patent_app_type] => utility [patent_app_number] => 16/458357 [patent_app_country] => US [patent_app_date] => 2019-07-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 4126 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 299 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16458357 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/458357
Totem-pole bridgeless PFC conversion device and method of operating the same Jun 30, 2019 Issued
Array ( [id] => 18087022 [patent_doc_number] => 11537153 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-12-27 [patent_title] => Low power voltage reference circuits [patent_app_type] => utility [patent_app_number] => 16/459169 [patent_app_country] => US [patent_app_date] => 2019-07-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 7374 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 131 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16459169 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/459169
Low power voltage reference circuits Jun 30, 2019 Issued
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