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] => 17826295 [patent_doc_number] => 11431254 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-08-30 [patent_title] => Switching element unit and switching element module for use in an inverter circuit [patent_app_type] => utility [patent_app_number] => 15/734603 [patent_app_country] => US [patent_app_date] => 2019-06-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 8 [patent_no_of_words] => 13399 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 264 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15734603 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/734603
Switching element unit and switching element module for use in an inverter circuit Jun 23, 2019 Issued
Array ( [id] => 16820535 [patent_doc_number] => 11005381 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-05-11 [patent_title] => Synchronous rectifier control circuit [patent_app_type] => utility [patent_app_number] => 16/448024 [patent_app_country] => US [patent_app_date] => 2019-06-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 9 [patent_no_of_words] => 5763 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 147 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16448024 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/448024
Synchronous rectifier control circuit Jun 20, 2019 Issued
Array ( [id] => 15761527 [patent_doc_number] => 10622900 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2020-04-14 [patent_title] => Single-inductor multiple-output DC-DC converter [patent_app_type] => utility [patent_app_number] => 16/446642 [patent_app_country] => US [patent_app_date] => 2019-06-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 1 [patent_no_of_words] => 4910 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 391 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16446642 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/446642
Single-inductor multiple-output DC-DC converter Jun 19, 2019 Issued
Array ( [id] => 16820532 [patent_doc_number] => 11005378 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-05-11 [patent_title] => Operating a flyback converter using a signal indicative of a resonant tank current of the flyback converter [patent_app_type] => utility [patent_app_number] => 16/447864 [patent_app_country] => US [patent_app_date] => 2019-06-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 15 [patent_no_of_words] => 6431 [patent_no_of_claims] => 20 [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] => 16447864 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/447864
Operating a flyback converter using a signal indicative of a resonant tank current of the flyback converter Jun 19, 2019 Issued
Array ( [id] => 15923413 [patent_doc_number] => 10658959 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-05-19 [patent_title] => Power supply system with first and second AC voltage generators and respective 6-pulse rectifier units [patent_app_type] => utility [patent_app_number] => 16/431006 [patent_app_country] => US [patent_app_date] => 2019-06-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 4 [patent_no_of_words] => 2041 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 335 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16431006 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/431006
Power supply system with first and second AC voltage generators and respective 6-pulse rectifier units Jun 3, 2019 Issued
Array ( [id] => 16820525 [patent_doc_number] => 11005371 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-05-11 [patent_title] => Hybrid DC-DC power converter with small voltage conversion ratio [patent_app_type] => utility [patent_app_number] => 16/430772 [patent_app_country] => US [patent_app_date] => 2019-06-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 10 [patent_no_of_words] => 6699 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 245 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16430772 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/430772
Hybrid DC-DC power converter with small voltage conversion ratio Jun 3, 2019 Issued
Array ( [id] => 16400177 [patent_doc_number] => 20200341035 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-10-29 [patent_title] => CAPACITANCE-COUPLED VOLTAGE TRANSFORMER MONITORING [patent_app_type] => utility [patent_app_number] => 16/396939 [patent_app_country] => US [patent_app_date] => 2019-04-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8017 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [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] => 16396939 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/396939
Capacitance-coupled voltage transformer monitoring Apr 28, 2019 Issued
Array ( [id] => 16400530 [patent_doc_number] => 20200341388 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-10-29 [patent_title] => SEMICONDUCTOR APPARATUS AND METHOD OF OPERATING THE SAME [patent_app_type] => utility [patent_app_number] => 16/396911 [patent_app_country] => US [patent_app_date] => 2019-04-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6239 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 41 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16396911 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/396911
Semiconductor apparatus and method of operating the same for preventing photomask particulate contamination Apr 28, 2019 Issued
Array ( [id] => 15092935 [patent_doc_number] => 20190341279 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-11-07 [patent_title] => CERAMIC HEATER [patent_app_type] => utility [patent_app_number] => 16/395587 [patent_app_country] => US [patent_app_date] => 2019-04-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5281 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -2 [patent_words_short_claim] => 212 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16395587 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/395587
Ceramic heater Apr 25, 2019 Issued
Array ( [id] => 17253951 [patent_doc_number] => 11189449 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-11-30 [patent_title] => Zero crossing contactor and method of operating [patent_app_type] => utility [patent_app_number] => 16/394347 [patent_app_country] => US [patent_app_date] => 2019-04-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 7417 [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] => 16394347 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/394347
Zero crossing contactor and method of operating Apr 24, 2019 Issued
Array ( [id] => 16194720 [patent_doc_number] => 20200235569 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-07-23 [patent_title] => INTERNAL VOLTAGE-CANCELING CIRCUIT AND USB DEVICE USING THE SAME [patent_app_type] => utility [patent_app_number] => 16/394341 [patent_app_country] => US [patent_app_date] => 2019-04-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1823 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 16394341 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/394341
Internal voltage-canceling circuit and USB device using the same Apr 24, 2019 Issued
Array ( [id] => 15094067 [patent_doc_number] => 20190341845 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-11-07 [patent_title] => STEP-UP CONVERTER [patent_app_type] => utility [patent_app_number] => 16/393657 [patent_app_country] => US [patent_app_date] => 2019-04-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13545 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 149 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16393657 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/393657
STEP-UP CONVERTER Apr 23, 2019 Abandoned
Array ( [id] => 16395127 [patent_doc_number] => 20200336068 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-10-22 [patent_title] => THREE-STAGE POWER CONVERTERS FOR ELECTRIC VEHICLE CHARGING [patent_app_type] => utility [patent_app_number] => 16/388857 [patent_app_country] => US [patent_app_date] => 2019-04-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5140 [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] => 16388857 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/388857
Three-stage power converters for electric vehicle charging Apr 17, 2019 Issued
Array ( [id] => 16379848 [patent_doc_number] => 20200328691 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-10-15 [patent_title] => DC BUS CAPACITOR BALANCING FOR THREE-LEVEL, SIX-PHASE VOLTAGE SOURCE CONVERTERS [patent_app_type] => utility [patent_app_number] => 16/381366 [patent_app_country] => US [patent_app_date] => 2019-04-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2714 [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] => 16381366 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/381366
DC BUS CAPACITOR BALANCING FOR THREE-LEVEL, SIX-PHASE VOLTAGE SOURCE CONVERTERS Apr 10, 2019 Abandoned
Array ( [id] => 14940073 [patent_doc_number] => 20190305675 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-10-03 [patent_title] => ACOUSTIC NOISE REDUCTION IN A DC-DC CONVERTER USING VARIABLE FREQUENCY MODULATION [patent_app_type] => utility [patent_app_number] => 16/382032 [patent_app_country] => US [patent_app_date] => 2019-04-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4475 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 75 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16382032 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/382032
ACOUSTIC NOISE REDUCTION IN A DC-DC CONVERTER USING VARIABLE FREQUENCY MODULATION Apr 10, 2019 Abandoned
Array ( [id] => 16250044 [patent_doc_number] => 10749426 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2020-08-18 [patent_title] => Trapezoidal power-supply barrier between hazardous and normal locations [patent_app_type] => utility [patent_app_number] => 16/381964 [patent_app_country] => US [patent_app_date] => 2019-04-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 10 [patent_no_of_words] => 4808 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 210 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16381964 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/381964
Trapezoidal power-supply barrier between hazardous and normal locations Apr 10, 2019 Issued
Array ( [id] => 16379866 [patent_doc_number] => 20200328709 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-10-15 [patent_title] => MODEL PREDICTIVE CONTROL FOR MATRIX CONVERTER OPERATING IN CURRENT CONTROL MODE WITH LOAD CURRENT ESTIMATION [patent_app_type] => utility [patent_app_number] => 16/381947 [patent_app_country] => US [patent_app_date] => 2019-04-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6078 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 16381947 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/381947
Model predictive control for matrix converter operating in current control mode with load current estimation Apr 10, 2019 Issued
Array ( [id] => 15674123 [patent_doc_number] => 10601306 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2020-03-24 [patent_title] => System and method for providing power surge protection in a power supply unit for an information handling system [patent_app_type] => utility [patent_app_number] => 16/381252 [patent_app_country] => US [patent_app_date] => 2019-04-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 7 [patent_no_of_words] => 5432 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 228 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16381252 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/381252
System and method for providing power surge protection in a power supply unit for an information handling system Apr 10, 2019 Issued
Array ( [id] => 14997265 [patent_doc_number] => 20190317590 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-10-17 [patent_title] => TRUE POWER SHEDDING [patent_app_type] => utility [patent_app_number] => 16/382069 [patent_app_country] => US [patent_app_date] => 2019-04-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5959 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 68 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16382069 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/382069
Apparatus for true power shedding via switchable electrical connections Apr 10, 2019 Issued
Array ( [id] => 15235517 [patent_doc_number] => 10505491 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2019-12-10 [patent_title] => Electronic control apparatus for a power supply system with a rotating electrical machine [patent_app_type] => utility [patent_app_number] => 16/379842 [patent_app_country] => US [patent_app_date] => 2019-04-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 11 [patent_no_of_words] => 8459 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 405 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16379842 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/379842
Electronic control apparatus for a power supply system with a rotating electrical machine Apr 9, 2019 Issued
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