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] => 13486373 [patent_doc_number] => 20180294729 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-10-11 [patent_title] => SYNCHRONOUS RECTIFIER DRIVE AND SOFT SWITCHING CIRCUIT [patent_app_type] => utility [patent_app_number] => 16/006428 [patent_app_country] => US [patent_app_date] => 2018-06-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3876 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 86 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16006428 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/006428
SYNCHRONOUS RECTIFIER DRIVE AND SOFT SWITCHING CIRCUIT Jun 11, 2018 Abandoned
Array ( [id] => 13922519 [patent_doc_number] => 10205391 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2019-02-12 [patent_title] => Current sensing with RDS [patent_app_type] => utility [patent_app_number] => 15/997415 [patent_app_country] => US [patent_app_date] => 2018-06-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 7365 [patent_no_of_claims] => 12 [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] => 15997415 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/997415
Current sensing with RDS Jun 3, 2018 Issued
Array ( [id] => 13820343 [patent_doc_number] => 10186957 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2019-01-22 [patent_title] => Soft-switching control circuit of boost-type PFC converter [patent_app_type] => utility [patent_app_number] => 15/993630 [patent_app_country] => US [patent_app_date] => 2018-05-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 6 [patent_no_of_words] => 4237 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 175 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15993630 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/993630
Soft-switching control circuit of boost-type PFC converter May 30, 2018 Issued
Array ( [id] => 14399001 [patent_doc_number] => 10312794 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2019-06-04 [patent_title] => Chopper assembly and controlling method thereof [patent_app_type] => utility [patent_app_number] => 15/992991 [patent_app_country] => US [patent_app_date] => 2018-05-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 4848 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 134 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15992991 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/992991
Chopper assembly and controlling method thereof May 29, 2018 Issued
Array ( [id] => 13977823 [patent_doc_number] => 10218284 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2019-02-26 [patent_title] => DC-DC power converters including a valley skipping mode and methods of operating DC-DC power converters [patent_app_type] => utility [patent_app_number] => 15/988984 [patent_app_country] => US [patent_app_date] => 2018-05-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 5608 [patent_no_of_claims] => 26 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 150 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15988984 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/988984
DC-DC power converters including a valley skipping mode and methods of operating DC-DC power converters May 23, 2018 Issued
Array ( [id] => 15186101 [patent_doc_number] => 20190363642 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-11-28 [patent_title] => Inverter [patent_app_type] => utility [patent_app_number] => 15/987880 [patent_app_country] => US [patent_app_date] => 2018-05-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1621 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [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] => 15987880 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/987880
Inverter May 22, 2018 Abandoned
Array ( [id] => 13668661 [patent_doc_number] => 10164518 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2018-12-25 [patent_title] => Power control device capable of detecting the condition of the sensing resistor [patent_app_type] => utility [patent_app_number] => 15/974678 [patent_app_country] => US [patent_app_date] => 2018-05-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 4413 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 246 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15974678 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/974678
Power control device capable of detecting the condition of the sensing resistor May 7, 2018 Issued
Array ( [id] => 15031623 [patent_doc_number] => 20190326816 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-10-24 [patent_title] => Apparatus for Power Converter with Efficient Switching and Associated Methods [patent_app_type] => utility [patent_app_number] => 15/958561 [patent_app_country] => US [patent_app_date] => 2018-04-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7783 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 61 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15958561 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/958561
Apparatus for Power Converter with Efficient Switching and Associated Methods Apr 19, 2018 Abandoned
Array ( [id] => 17819063 [patent_doc_number] => 11424690 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-08-23 [patent_title] => Semiconductor switching arrangement [patent_app_type] => utility [patent_app_number] => 16/613909 [patent_app_country] => US [patent_app_date] => 2018-04-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 10 [patent_no_of_words] => 3068 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 231 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16613909 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/613909
Semiconductor switching arrangement Apr 15, 2018 Issued
Array ( [id] => 16219089 [patent_doc_number] => 10734915 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-08-04 [patent_title] => Method for suppressing common-mode current of neutral line in T-type three-level three-phase inverter [patent_app_type] => utility [patent_app_number] => 16/496618 [patent_app_country] => US [patent_app_date] => 2018-03-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 10 [patent_no_of_words] => 3278 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 227 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16496618 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/496618
Method for suppressing common-mode current of neutral line in T-type three-level three-phase inverter Mar 22, 2018 Issued
Array ( [id] => 14656861 [patent_doc_number] => 20190235559 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-08-01 [patent_title] => VOLTAGE REFERENCE AND STARTUP CIRCUIT HAVING LOW OPERATING CURRENT [patent_app_type] => utility [patent_app_number] => 15/881940 [patent_app_country] => US [patent_app_date] => 2018-01-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4163 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [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] => 15881940 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/881940
VOLTAGE REFERENCE AND STARTUP CIRCUIT HAVING LOW OPERATING CURRENT Jan 28, 2018 Abandoned
Array ( [id] => 12780817 [patent_doc_number] => 20180152107 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-05-31 [patent_title] => Drive Scheme for Weakly Coupled Coils [patent_app_type] => utility [patent_app_number] => 15/882384 [patent_app_country] => US [patent_app_date] => 2018-01-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6114 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [patent_words_short_claim] => 95 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15882384 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/882384
Drive scheme for weakly coupled coils Jan 28, 2018 Issued
Array ( [id] => 13421149 [patent_doc_number] => 20180262117 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-09-13 [patent_title] => POWER ELECTRONIC CONVERSION UNIT AND SYSTEM [patent_app_type] => utility [patent_app_number] => 15/880678 [patent_app_country] => US [patent_app_date] => 2018-01-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4508 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [patent_words_short_claim] => 67 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15880678 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/880678
Power electronic conversion unit and system Jan 25, 2018 Issued
Array ( [id] => 13809043 [patent_doc_number] => 10181791 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2019-01-15 [patent_title] => Converter digital control circuit with adaptive compensation [patent_app_type] => utility [patent_app_number] => 15/876641 [patent_app_country] => US [patent_app_date] => 2018-01-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 9416 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 112 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15876641 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/876641
Converter digital control circuit with adaptive compensation Jan 21, 2018 Issued
Array ( [id] => 14330025 [patent_doc_number] => 10296028 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2019-05-21 [patent_title] => Low dropout regulator, method for improving stability of low dropout regulator, and phase-locked loop [patent_app_type] => utility [patent_app_number] => 15/857037 [patent_app_country] => US [patent_app_date] => 2017-12-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 6 [patent_no_of_words] => 5282 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 3 [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] => 15857037 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/857037
Low dropout regulator, method for improving stability of low dropout regulator, and phase-locked loop Dec 27, 2017 Issued
Array ( [id] => 12664957 [patent_doc_number] => 20180113485 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-04-26 [patent_title] => BANDGAP REFERENCE CIRCUIT AND POWER SUPPLY CIRCUIT [patent_app_type] => utility [patent_app_number] => 15/851205 [patent_app_country] => US [patent_app_date] => 2017-12-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 14426 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 209 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15851205 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/851205
Bandgap reference circuit and power supply circuit Dec 20, 2017 Issued
Array ( [id] => 14645493 [patent_doc_number] => 10367500 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2019-07-30 [patent_title] => Switching voltage regulator with variable minimum off-time [patent_app_type] => utility [patent_app_number] => 15/835961 [patent_app_country] => US [patent_app_date] => 2017-12-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 4809 [patent_no_of_claims] => 32 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 164 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15835961 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/835961
Switching voltage regulator with variable minimum off-time Dec 7, 2017 Issued
Array ( [id] => 13321989 [patent_doc_number] => 20180212532 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-07-26 [patent_title] => POWER MODULE CASCADED CONVERTER SYSTEM [patent_app_type] => utility [patent_app_number] => 15/832761 [patent_app_country] => US [patent_app_date] => 2017-12-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4819 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -7 [patent_words_short_claim] => 253 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15832761 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/832761
Power module cascaded converter system Dec 4, 2017 Issued
Array ( [id] => 12874732 [patent_doc_number] => 20180183419 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-06-28 [patent_title] => MINIMUM PULSE-WIDTH ASSURANCE [patent_app_type] => utility [patent_app_number] => 15/831047 [patent_app_country] => US [patent_app_date] => 2017-12-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6746 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 198 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15831047 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/831047
Minimum pulse-width assurance Dec 3, 2017 Issued
Array ( [id] => 14253841 [patent_doc_number] => 10277133 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2019-04-30 [patent_title] => Isolated DC/DC converter, primary side controller, power adapter, and electronic device [patent_app_type] => utility [patent_app_number] => 15/830461 [patent_app_country] => US [patent_app_date] => 2017-12-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 19 [patent_figures_cnt] => 24 [patent_no_of_words] => 8390 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 171 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15830461 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/830461
Isolated DC/DC converter, primary side controller, power adapter, and electronic device Dec 3, 2017 Issued
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