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] => 18052808 [patent_doc_number] => 11526189 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-12-13 [patent_title] => Voltage reduction circuit for bandgap reference voltage circuit [patent_app_type] => utility [patent_app_number] => 17/334892 [patent_app_country] => US [patent_app_date] => 2021-05-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 3734 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 373 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17334892 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/334892
Voltage reduction circuit for bandgap reference voltage circuit May 30, 2021 Issued
Array ( [id] => 18501028 [patent_doc_number] => 20230223840 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-07-13 [patent_title] => INTEGRATED ON-BOARD CHARGER AND AUXILIARY POWER MODULE USING A TRIPLE ACTIVE BRIDGE FOR ELECTRIC VEHICLES [patent_app_type] => utility [patent_app_number] => 17/928006 [patent_app_country] => US [patent_app_date] => 2021-05-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2574 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 120 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17928006 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/928006
Integrated on-board charger and auxiliary power module using a triple active bridge for electric vehicles May 24, 2021 Issued
Array ( [id] => 18514523 [patent_doc_number] => 20230230780 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-07-20 [patent_title] => PASSIVE TRIGGERED-POWER ELECTRONIC TAP-CHANGER DEVICE AND CONTACT DEVICE [patent_app_type] => utility [patent_app_number] => 18/010228 [patent_app_country] => US [patent_app_date] => 2021-05-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7718 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 249 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18010228 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/010228
Passive triggered-power electronic tap-changer device and contact device May 5, 2021 Issued
Array ( [id] => 17856002 [patent_doc_number] => 20220286045 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-09-08 [patent_title] => POWER SUPPLY AND OPERATION METHOD THEREOF [patent_app_type] => utility [patent_app_number] => 17/313007 [patent_app_country] => US [patent_app_date] => 2021-05-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6039 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 84 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17313007 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/313007
Power factor correction circuit with fall time detection May 5, 2021 Issued
Array ( [id] => 17086172 [patent_doc_number] => 20210281179 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-09-09 [patent_title] => Hybrid DC-DC Power Converter with Small Voltage Conversion Ratio [patent_app_type] => utility [patent_app_number] => 17/308271 [patent_app_country] => US [patent_app_date] => 2021-05-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6729 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [patent_words_short_claim] => 276 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17308271 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/308271
Hybrid DC-DC power converter with small voltage conversion ratio May 4, 2021 Issued
Array ( [id] => 17225229 [patent_doc_number] => 11177743 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-11-16 [patent_title] => System for voltage level generation in a switched series/parallel sources hybrid multi-level inverter [patent_app_type] => utility [patent_app_number] => 17/242499 [patent_app_country] => US [patent_app_date] => 2021-04-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 36 [patent_figures_cnt] => 51 [patent_no_of_words] => 11397 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 604 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17242499 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/242499
System for voltage level generation in a switched series/parallel sources hybrid multi-level inverter Apr 27, 2021 Issued
Array ( [id] => 19092478 [patent_doc_number] => 11953927 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-04-09 [patent_title] => Bias generating devices and methods for generating bias [patent_app_type] => utility [patent_app_number] => 17/238064 [patent_app_country] => US [patent_app_date] => 2021-04-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 18 [patent_figures_cnt] => 24 [patent_no_of_words] => 15243 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 130 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17238064 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/238064
Bias generating devices and methods for generating bias Apr 21, 2021 Issued
Array ( [id] => 19741753 [patent_doc_number] => 12218606 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-02-04 [patent_title] => Power conversion device [patent_app_type] => utility [patent_app_number] => 18/276274 [patent_app_country] => US [patent_app_date] => 2021-04-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 14 [patent_no_of_words] => 11581 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 421 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18276274 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/276274
Power conversion device Apr 4, 2021 Issued
Array ( [id] => 17100798 [patent_doc_number] => 20210288589 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-09-16 [patent_title] => SWITCHING DEVICE, SWITCHING POWER SUPPLY APPARATUS, AND VEHICLE [patent_app_type] => utility [patent_app_number] => 17/192641 [patent_app_country] => US [patent_app_date] => 2021-03-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3401 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 123 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17192641 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/192641
Switching device, switching power supply apparatus, and vehicle Mar 3, 2021 Issued
Array ( [id] => 20423530 [patent_doc_number] => 20250385615 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-12-18 [patent_title] => SWITCHING POWER SUPPLY APPARATUS AND ELECTRIC POWER SUPPLY SYSTEM [patent_app_type] => utility [patent_app_number] => 18/279951 [patent_app_country] => US [patent_app_date] => 2021-03-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3305 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [patent_words_short_claim] => 365 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18279951 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/279951
SWITCHING POWER SUPPLY APPARATUS AND ELECTRIC POWER SUPPLY SYSTEM Mar 1, 2021 Pending
Array ( [id] => 17038265 [patent_doc_number] => 20210255224 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-08-19 [patent_title] => VOLTAGE BOOSTER ISOLATION TRANSFORMER SYSTEM AND METHOD OF OPERATING THE SAME [patent_app_type] => utility [patent_app_number] => 17/188071 [patent_app_country] => US [patent_app_date] => 2021-03-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4696 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -26 [patent_words_short_claim] => 53 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17188071 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/188071
Voltage booster isolation transformer system and method of operating the same Feb 28, 2021 Issued
Array ( [id] => 17071356 [patent_doc_number] => 20210273573 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-09-02 [patent_title] => MATRIX CONVERTER CONTROL USING PREDICTED OUTPUT CURRENT [patent_app_type] => utility [patent_app_number] => 17/175341 [patent_app_country] => US [patent_app_date] => 2021-02-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10442 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [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] => 17175341 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/175341
Matrix converter control using predicted output current Feb 11, 2021 Issued
Array ( [id] => 18501053 [patent_doc_number] => 20230223867 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-07-13 [patent_title] => POWER CONVERSION DEVICE [patent_app_type] => utility [patent_app_number] => 17/927217 [patent_app_country] => US [patent_app_date] => 2021-02-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5824 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -7 [patent_words_short_claim] => 185 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17927217 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/927217
Power conversion device configured to observe chip temperature Feb 4, 2021 Issued
Array ( [id] => 16856646 [patent_doc_number] => 20210157391 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-05-27 [patent_title] => TRUE POWER SHEDDING [patent_app_type] => utility [patent_app_number] => 17/166972 [patent_app_country] => US [patent_app_date] => 2021-02-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5973 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 17166972 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/166972
True power shedding Feb 2, 2021 Issued
Array ( [id] => 18944280 [patent_doc_number] => 20240039419 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-01 [patent_title] => POWER SOURCE DEVICE [patent_app_type] => utility [patent_app_number] => 18/265691 [patent_app_country] => US [patent_app_date] => 2021-01-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 15271 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [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] => 18265691 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/265691
Power source device Jan 26, 2021 Issued
Array ( [id] => 17360509 [patent_doc_number] => 20220021305 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-01-20 [patent_title] => METHOD, SYSTEM AND APPARATUS FOR CONSTANT, HIGH SWITCHING FREQUENCY AND NARROW DUTY RATIO PWM CONTROL OF DC-DC CONVERTERS AND ACCURATE PFM CONTROL AT LIGHT LOAD [patent_app_type] => utility [patent_app_number] => 17/145944 [patent_app_country] => US [patent_app_date] => 2021-01-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8392 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 229 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17145944 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/145944
Method, system and apparatus for constant, high switching frequency and narrow duty ratio PWM control of DC-DC converters and accurate PFM control at light load Jan 10, 2021 Issued
Array ( [id] => 18713456 [patent_doc_number] => 20230336092 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-10-19 [patent_title] => POWER CONVERSION DEVICE [patent_app_type] => utility [patent_app_number] => 18/028763 [patent_app_country] => US [patent_app_date] => 2020-12-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 12365 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 190 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18028763 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/028763
POWER CONVERSION DEVICE Dec 22, 2020 Abandoned
Array ( [id] => 18199043 [patent_doc_number] => 20230052562 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-02-16 [patent_title] => METHOD FOR OPERATING A POWER ELECTRONIC CONVERTER DEVICE WITH FLOATING CELLS [patent_app_type] => utility [patent_app_number] => 17/789899 [patent_app_country] => US [patent_app_date] => 2020-12-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5847 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 343 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17789899 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/789899
Method for operating a power electronic converter device with floating cells Dec 15, 2020 Issued
Array ( [id] => 18645981 [patent_doc_number] => 11770064 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-09-26 [patent_title] => Prediction of load current and control current in a power converter using output voltage thresholds by pre-seeding target current values [patent_app_type] => utility [patent_app_number] => 17/119553 [patent_app_country] => US [patent_app_date] => 2020-12-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 29 [patent_figures_cnt] => 35 [patent_no_of_words] => 12994 [patent_no_of_claims] => 14 [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] => 17119553 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/119553
Prediction of load current and control current in a power converter using output voltage thresholds by pre-seeding target current values Dec 10, 2020 Issued
Array ( [id] => 18804780 [patent_doc_number] => 11837950 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-12-05 [patent_title] => Switching power supply and electronic device [patent_app_type] => utility [patent_app_number] => 17/434295 [patent_app_country] => US [patent_app_date] => 2020-12-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 12 [patent_no_of_words] => 5964 [patent_no_of_claims] => 20 [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] => 17434295 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/434295
Switching power supply and electronic device Dec 9, 2020 Issued
Menu