Search

Joseph Chang

Examiner (ID: 16584, Phone: (571)272-1759 , Office: P/2842 )

Most Active Art Unit
2817
Art Unit(s)
2817, 2849, 2842, 2843
Total Applications
2180
Issued Applications
1920
Pending Applications
118
Abandoned Applications
171

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 18533760 [patent_doc_number] => 20230238837 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-07-27 [patent_title] => POWER TRANSFER SYSTEM WITH PATIENT TRANSPORT APPARATUS AND POWER TRANSFER DEVICE TO TRANSFER POWER TO THE PATIENT TRANSPORT APPARATUS [patent_app_type] => utility [patent_app_number] => 18/127880 [patent_app_country] => US [patent_app_date] => 2023-03-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10335 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 199 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18127880 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/127880
Power transfer system with patient transport apparatus and power transfer device to transfer power to the patient transport apparatus Mar 28, 2023 Issued
Array ( [id] => 18511182 [patent_doc_number] => 20230227305 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-07-20 [patent_title] => TECHNIQUES FOR TRANSDUCTION AND STORAGE OF QUANTUM LEVEL SIGNALS [patent_app_type] => utility [patent_app_number] => 18/187419 [patent_app_country] => US [patent_app_date] => 2023-03-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10255 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 44 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18187419 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/187419
TECHNIQUES FOR TRANSDUCTION AND STORAGE OF QUANTUM LEVEL SIGNALS Mar 20, 2023 Pending
Array ( [id] => 19812853 [patent_doc_number] => 12244268 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-03-04 [patent_title] => Circuit device and oscillator [patent_app_type] => utility [patent_app_number] => 18/114322 [patent_app_country] => US [patent_app_date] => 2023-02-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 15 [patent_figures_cnt] => 19 [patent_no_of_words] => 16396 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 3 [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] => 18114322 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/114322
Circuit device and oscillator Feb 26, 2023 Issued
Array ( [id] => 18501024 [patent_doc_number] => 20230223835 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-07-13 [patent_title] => SERIAL-PARALLEL CONVERTER PROTECTION SYSTEM, CONTROLLER, AND CONVERTER [patent_app_type] => utility [patent_app_number] => 18/174855 [patent_app_country] => US [patent_app_date] => 2023-02-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5550 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 96 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18174855 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/174855
Serial-parallel converter protection system, controller, and converter Feb 26, 2023 Issued
Array ( [id] => 18600786 [patent_doc_number] => 20230275589 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-08-31 [patent_title] => ATOMIC OSCILLATOR [patent_app_type] => utility [patent_app_number] => 18/113215 [patent_app_country] => US [patent_app_date] => 2023-02-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5938 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 145 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18113215 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/113215
Atomic oscillator Feb 22, 2023 Issued
Array ( [id] => 18586619 [patent_doc_number] => 20230268884 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-08-24 [patent_title] => OSCILLATOR [patent_app_type] => utility [patent_app_number] => 18/171405 [patent_app_country] => US [patent_app_date] => 2023-02-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9160 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [patent_words_short_claim] => 191 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18171405 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/171405
Oscillator Feb 19, 2023 Issued
Array ( [id] => 19385442 [patent_doc_number] => 20240275312 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-15 [patent_title] => SYSTEM FOR PRODUCING HIGH-INTENSITY ELECTRICITY UTILIZING GRAVITATIONAL WAVES [patent_app_type] => utility [patent_app_number] => 18/108143 [patent_app_country] => US [patent_app_date] => 2023-02-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5315 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 119 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18108143 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/108143
System for producing high-intensity electricity utilizing gravitational waves Feb 9, 2023 Issued
Array ( [id] => 18883556 [patent_doc_number] => 20240006925 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-01-04 [patent_title] => LASER WIRELESS POWER TRANSMISSION DEVICE AND METHOD BASED ON POWER ACQUISITION ON POWER LINES [patent_app_type] => utility [patent_app_number] => 18/164859 [patent_app_country] => US [patent_app_date] => 2023-02-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8012 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 656 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18164859 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/164859
Laser wireless power transmission device and method based on power acquisition on power lines Feb 5, 2023 Issued
Array ( [id] => 18515214 [patent_doc_number] => 20230231493 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-07-20 [patent_title] => INVERTER [patent_app_type] => utility [patent_app_number] => 18/161344 [patent_app_country] => US [patent_app_date] => 2023-01-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9673 [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] => 18161344 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/161344
Inverter Jan 29, 2023 Issued
Array ( [id] => 19508399 [patent_doc_number] => 12119832 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-10-15 [patent_title] => Atomic oscillator [patent_app_type] => utility [patent_app_number] => 18/101737 [patent_app_country] => US [patent_app_date] => 2023-01-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 5387 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 124 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18101737 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/101737
Atomic oscillator Jan 25, 2023 Issued
Array ( [id] => 20244523 [patent_doc_number] => 12424857 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-09-23 [patent_title] => Charging and discharging control of energy devices in a power system [patent_app_type] => utility [patent_app_number] => 18/099895 [patent_app_country] => US [patent_app_date] => 2023-01-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 20 [patent_figures_cnt] => 21 [patent_no_of_words] => 11630 [patent_no_of_claims] => 58 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 240 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18099895 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/099895
Charging and discharging control of energy devices in a power system Jan 19, 2023 Issued
Array ( [id] => 19912778 [patent_doc_number] => 12289000 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-04-29 [patent_title] => Charging and discharging control of energy devices in a power system [patent_app_type] => utility [patent_app_number] => 18/099890 [patent_app_country] => US [patent_app_date] => 2023-01-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 20 [patent_figures_cnt] => 21 [patent_no_of_words] => 11629 [patent_no_of_claims] => 26 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 284 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18099890 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/099890
Charging and discharging control of energy devices in a power system Jan 19, 2023 Issued
Array ( [id] => 18500981 [patent_doc_number] => 20230223790 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-07-13 [patent_title] => NON-CONTACT POWER RECEPTION DEVICE AND METHOD [patent_app_type] => utility [patent_app_number] => 18/153089 [patent_app_country] => US [patent_app_date] => 2023-01-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2659 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -7 [patent_words_short_claim] => 144 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18153089 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/153089
NON-CONTACT POWER RECEPTION DEVICE AND METHOD Jan 10, 2023 Abandoned
Array ( [id] => 19370416 [patent_doc_number] => 12062508 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-08-13 [patent_title] => Electromagnet driving mechanism, assembly and dual power automatic transfer switch [patent_app_type] => utility [patent_app_number] => 18/091488 [patent_app_country] => US [patent_app_date] => 2022-12-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 14 [patent_no_of_words] => 5956 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 198 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18091488 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/091488
Electromagnet driving mechanism, assembly and dual power automatic transfer switch Dec 29, 2022 Issued
Array ( [id] => 19324239 [patent_doc_number] => 12041890 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-07-23 [patent_title] => Hose reel prime mover and hose reel system including the same [patent_app_type] => utility [patent_app_number] => 18/147411 [patent_app_country] => US [patent_app_date] => 2022-12-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 19 [patent_figures_cnt] => 19 [patent_no_of_words] => 11234 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 71 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18147411 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/147411
Hose reel prime mover and hose reel system including the same Dec 27, 2022 Issued
Array ( [id] => 19370826 [patent_doc_number] => 12062924 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-08-13 [patent_title] => Electronic device for wireless power transmission and operating method thereof [patent_app_type] => utility [patent_app_number] => 18/088623 [patent_app_country] => US [patent_app_date] => 2022-12-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 13 [patent_no_of_words] => 16859 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 80 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18088623 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/088623
Electronic device for wireless power transmission and operating method thereof Dec 25, 2022 Issued
Array ( [id] => 19581741 [patent_doc_number] => 12147862 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-11-19 [patent_title] => Electronic monitoring device [patent_app_type] => utility [patent_app_number] => 18/145493 [patent_app_country] => US [patent_app_date] => 2022-12-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 19 [patent_no_of_words] => 5880 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 200 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18145493 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/145493
Electronic monitoring device Dec 21, 2022 Issued
Array ( [id] => 18440666 [patent_doc_number] => 20230187962 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-06-15 [patent_title] => Photovoltaic Array for Operation Under Non-Uniform Illumination with Adjustable Voltage Output [patent_app_type] => utility [patent_app_number] => 18/065412 [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] => 5490 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 246 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18065412 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/065412
Photovoltaic array for operation under non-uniform illumination with adjustable voltage output Dec 12, 2022 Issued
Array ( [id] => 18424720 [patent_doc_number] => 20230179185 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-06-08 [patent_title] => GLITCH-FREE FREQUENCY TUNING OF RING-OSCILLATORS [patent_app_type] => utility [patent_app_number] => 18/072157 [patent_app_country] => US [patent_app_date] => 2022-11-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7335 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -21 [patent_words_short_claim] => 197 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18072157 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/072157
Glitch-free frequency tuning of ring-oscillators Nov 29, 2022 Issued
Array ( [id] => 19131622 [patent_doc_number] => 20240136975 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-04-25 [patent_title] => Reducing Target Frequency Variation In Oscillator [patent_app_type] => utility [patent_app_number] => 18/072676 [patent_app_country] => US [patent_app_date] => 2022-11-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4915 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 78 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18072676 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/072676
Reducing target frequency variation in oscillator Nov 29, 2022 Issued
Menu