Search

Kai J. Chang

Examiner (ID: 16031)

Most Active Art Unit
2468
Art Unit(s)
2468
Total Applications
469
Issued Applications
337
Pending Applications
28
Abandoned Applications
109

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 20176284 [patent_doc_number] => 12395043 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-08-19 [patent_title] => Cooling device for electric motor [patent_app_type] => utility [patent_app_number] => 18/119032 [patent_app_country] => US [patent_app_date] => 2023-03-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 5 [patent_no_of_words] => 2478 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 298 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18119032 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/119032
Cooling device for electric motor Mar 7, 2023 Issued
Array ( [id] => 19407853 [patent_doc_number] => 20240291364 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-29 [patent_title] => ELECTRICAL MACHINE WITH AXIALLY-EXTENDING FLUX [patent_app_type] => utility [patent_app_number] => 18/176193 [patent_app_country] => US [patent_app_date] => 2023-02-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2697 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [patent_words_short_claim] => 157 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18176193 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/176193
ELECTRICAL MACHINE WITH AXIALLY-EXTENDING FLUX Feb 27, 2023 Abandoned
Array ( [id] => 18473954 [patent_doc_number] => 20230208242 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-06-29 [patent_title] => MOTOR [patent_app_type] => utility [patent_app_number] => 18/145982 [patent_app_country] => US [patent_app_date] => 2022-12-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 19553 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [patent_words_short_claim] => 466 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18145982 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/145982
Insulation assemblies and members for a stator of an electric motor Dec 22, 2022 Issued
Array ( [id] => 20346369 [patent_doc_number] => 12470105 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-11-11 [patent_title] => Insulating a stator of an electric motor with insulating assemblies and insulating sheets [patent_app_type] => utility [patent_app_number] => 18/145993 [patent_app_country] => US [patent_app_date] => 2022-12-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 24 [patent_figures_cnt] => 29 [patent_no_of_words] => 12265 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 629 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18145993 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/145993
Insulating a stator of an electric motor with insulating assemblies and insulating sheets Dec 22, 2022 Issued
Array ( [id] => 18338464 [patent_doc_number] => 20230130413 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-04-27 [patent_title] => BRUSHLESS MOTOR [patent_app_type] => utility [patent_app_number] => 18/087326 [patent_app_country] => US [patent_app_date] => 2022-12-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4577 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [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] => 18087326 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/087326
Brushless motor Dec 21, 2022 Issued
Array ( [id] => 18440698 [patent_doc_number] => 20230187994 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-06-15 [patent_title] => ELECTRIC MOTOR WITH FIBROUS COMPOSITE INSULATION FOR REDUCING BEARING ARCING [patent_app_type] => utility [patent_app_number] => 18/065528 [patent_app_country] => US [patent_app_date] => 2022-12-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5700 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 85 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18065528 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/065528
ELECTRIC MOTOR WITH FIBROUS COMPOSITE INSULATION FOR REDUCING BEARING ARCING Dec 12, 2022 Abandoned
Array ( [id] => 18380364 [patent_doc_number] => 20230155454 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-05-18 [patent_title] => STATOR FOR A ROTATING ELECTRICAL MACHINE [patent_app_type] => utility [patent_app_number] => 17/987201 [patent_app_country] => US [patent_app_date] => 2022-11-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4608 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 69 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17987201 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/987201
Stator for a rotating electrical machine Nov 14, 2022 Issued
Array ( [id] => 19935518 [patent_doc_number] => 12308728 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-05-20 [patent_title] => Electric work machine [patent_app_type] => utility [patent_app_number] => 17/981793 [patent_app_country] => US [patent_app_date] => 2022-11-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 3532 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 2 [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] => 17981793 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/981793
Electric work machine Nov 6, 2022 Issued
Array ( [id] => 20103540 [patent_doc_number] => 20250233476 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-17 [patent_title] => Heat Sink for a Stator Housing [patent_app_type] => utility [patent_app_number] => 18/700114 [patent_app_country] => US [patent_app_date] => 2022-10-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 0 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [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] => 18700114 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/700114
Heat Sink for a Stator Housing Oct 26, 2022 Pending
Array ( [id] => 19762455 [patent_doc_number] => 12220726 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-02-11 [patent_title] => Silicide capacitive micro electromechanical structure and fabrication method thereof [patent_app_type] => utility [patent_app_number] => 17/965533 [patent_app_country] => US [patent_app_date] => 2022-10-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 23 [patent_no_of_words] => 6441 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 110 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17965533 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/965533
Silicide capacitive micro electromechanical structure and fabrication method thereof Oct 12, 2022 Issued
Array ( [id] => 19851301 [patent_doc_number] => 20250096652 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-03-20 [patent_title] => ELECTRIC POWER HEAD FOR OUTDOOR POWER EQUIPMENT [patent_app_type] => utility [patent_app_number] => 18/565215 [patent_app_country] => US [patent_app_date] => 2022-10-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2432 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 76 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18565215 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/565215
Electric power head for outdoor power equipment Oct 11, 2022 Issued
Array ( [id] => 19407829 [patent_doc_number] => 20240291340 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-29 [patent_title] => COIL FOR STATOR OF ELECTRIC MOTOR, STATOR AND MANUFACTURING PROCESS [patent_app_type] => utility [patent_app_number] => 18/697327 [patent_app_country] => US [patent_app_date] => 2022-09-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4919 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 128 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18697327 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/697327
Coil for stator of electric motor, stator and manufacturing process Sep 29, 2022 Issued
Array ( [id] => 18182998 [patent_doc_number] => 20230043728 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-02-09 [patent_title] => External Rotor Motor With A Cooling Wheel For Cooling The Stator [patent_app_type] => utility [patent_app_number] => 17/881735 [patent_app_country] => US [patent_app_date] => 2022-08-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2654 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [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] => 17881735 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/881735
External rotor motor with a cooling wheel for cooling the stator Aug 4, 2022 Issued
Array ( [id] => 18197903 [patent_doc_number] => 20230051422 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-02-16 [patent_title] => ROTOR FOR A ROTARY ELECTRIC MACHINE [patent_app_type] => utility [patent_app_number] => 17/878323 [patent_app_country] => US [patent_app_date] => 2022-08-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3338 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [patent_words_short_claim] => 200 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17878323 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/878323
Rotor for a rotary electric machine Jul 31, 2022 Issued
Array ( [id] => 20020238 [patent_doc_number] => 20250158460 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-05-15 [patent_title] => Rotary Electrical Machine and Vehicle Driving Device Including Rotary Electrical Machine [patent_app_type] => utility [patent_app_number] => 18/726250 [patent_app_country] => US [patent_app_date] => 2022-07-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1127 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 192 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18726250 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/726250
Rotary Electrical Machine and Vehicle Driving Device Including Rotary Electrical Machine Jul 24, 2022 Pending
Array ( [id] => 19261363 [patent_doc_number] => 12021436 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-06-25 [patent_title] => Cooling of active elements of electrical machines [patent_app_type] => utility [patent_app_number] => 17/868993 [patent_app_country] => US [patent_app_date] => 2022-07-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 11 [patent_no_of_words] => 9878 [patent_no_of_claims] => 8 [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] => 17868993 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/868993
Cooling of active elements of electrical machines Jul 19, 2022 Issued
Array ( [id] => 19421423 [patent_doc_number] => 20240297547 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-09-05 [patent_title] => BRUSHLESS MOTOR [patent_app_type] => utility [patent_app_number] => 18/578441 [patent_app_country] => US [patent_app_date] => 2022-07-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8531 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -20 [patent_words_short_claim] => 73 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18578441 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/578441
BRUSHLESS MOTOR Jul 11, 2022 Pending
Array ( [id] => 19532496 [patent_doc_number] => 20240356398 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-10-24 [patent_title] => ROTOR, MOTOR USING THE ROTOR, AND ELECTRONIC DEVICE [patent_app_type] => utility [patent_app_number] => 18/294236 [patent_app_country] => US [patent_app_date] => 2022-07-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 17050 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 11 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18294236 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/294236
ROTOR, MOTOR USING THE ROTOR, AND ELECTRONIC DEVICE Jul 7, 2022 Pending
Array ( [id] => 19654979 [patent_doc_number] => 12176786 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-12-24 [patent_title] => Waterproof fan [patent_app_type] => utility [patent_app_number] => 17/855889 [patent_app_country] => US [patent_app_date] => 2022-07-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 6037 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 168 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17855889 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/855889
Waterproof fan Jun 30, 2022 Issued
Array ( [id] => 18424569 [patent_doc_number] => 20230179034 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-06-08 [patent_title] => STATOR COMPRISING MULTIPLE-ROW ARMATURE WINDING WITH HIGH FILL FACTOR [patent_app_type] => utility [patent_app_number] => 17/850243 [patent_app_country] => US [patent_app_date] => 2022-06-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2754 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 134 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17850243 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/850243
Stator comprising multiple-row armature winding with high fill factor Jun 26, 2022 Issued
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