Search

Changhyun Yi

Examiner (ID: 10577, Phone: (571)270-7799 , Office: P/2826 )

Most Active Art Unit
2826
Art Unit(s)
2826, 2812
Total Applications
1322
Issued Applications
1144
Pending Applications
142
Abandoned Applications
68

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 19943936 [patent_doc_number] => 12316076 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-05-27 [patent_title] => Vertical cavity surface emitting laser diode (VCSEL) with tunnel junction [patent_app_type] => utility [patent_app_number] => 17/060287 [patent_app_country] => US [patent_app_date] => 2020-10-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 12 [patent_no_of_words] => 0 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 196 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17060287 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/060287
Vertical cavity surface emitting laser diode (VCSEL) with tunnel junction Sep 30, 2020 Issued
Array ( [id] => 17772882 [patent_doc_number] => 11404840 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-08-02 [patent_title] => Device and method for measuring thermal load caused by excited state absorption in laser gain crystal [patent_app_type] => utility [patent_app_number] => 17/061051 [patent_app_country] => US [patent_app_date] => 2020-10-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 6354 [patent_no_of_claims] => 20 [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] => 17061051 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/061051
Device and method for measuring thermal load caused by excited state absorption in laser gain crystal Sep 30, 2020 Issued
Array ( [id] => 19094296 [patent_doc_number] => 11955765 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-04-09 [patent_title] => Systems and methods for controlling laser pulsing [patent_app_type] => utility [patent_app_number] => 17/032061 [patent_app_country] => US [patent_app_date] => 2020-09-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 16 [patent_figures_cnt] => 16 [patent_no_of_words] => 6597 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 192 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17032061 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/032061
Systems and methods for controlling laser pulsing Sep 24, 2020 Issued
Array ( [id] => 18048373 [patent_doc_number] => 11522331 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-12-06 [patent_title] => Coherent optical beam combination using micro-electro-mechanical system (MEMS) micro-mirror arrays (MMAs) that exhibit tip/tilt/piston (TTP) actuation [patent_app_type] => utility [patent_app_number] => 17/029915 [patent_app_country] => US [patent_app_date] => 2020-09-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 13 [patent_no_of_words] => 4502 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [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] => 17029915 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/029915
Coherent optical beam combination using micro-electro-mechanical system (MEMS) micro-mirror arrays (MMAs) that exhibit tip/tilt/piston (TTP) actuation Sep 22, 2020 Issued
Array ( [id] => 17483922 [patent_doc_number] => 20220091426 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-03-24 [patent_title] => SPOT-SIZE CONVERTER [patent_app_type] => utility [patent_app_number] => 17/028942 [patent_app_country] => US [patent_app_date] => 2020-09-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9029 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 133 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17028942 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/028942
Spot-size converter Sep 21, 2020 Issued
Array ( [id] => 16796602 [patent_doc_number] => 20210126419 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-04-29 [patent_title] => LASER PROJECTOR [patent_app_type] => utility [patent_app_number] => 17/028398 [patent_app_country] => US [patent_app_date] => 2020-09-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11805 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [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] => 17028398 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/028398
Laser projector Sep 21, 2020 Issued
Array ( [id] => 18159668 [patent_doc_number] => 20230026260 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-01-26 [patent_title] => TUNABLE LASER WITH ACTIVE MATERIAL ON AT LEAST ONE END FOR MONITORING PERFORMANCE [patent_app_type] => utility [patent_app_number] => 17/021993 [patent_app_country] => US [patent_app_date] => 2020-09-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9552 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [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] => 17021993 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/021993
Tunable laser with active material on at least one end for monitoring performance Sep 14, 2020 Issued
Array ( [id] => 19138328 [patent_doc_number] => 11973304 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2024-04-30 [patent_title] => Tunable laser [patent_app_type] => utility [patent_app_number] => 17/017532 [patent_app_country] => US [patent_app_date] => 2020-09-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 8 [patent_no_of_words] => 4301 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 79 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17017532 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/017532
Tunable laser Sep 9, 2020 Issued
Array ( [id] => 18164947 [patent_doc_number] => 20230031544 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-02-02 [patent_title] => LASER LIGHT SOURCE [patent_app_type] => utility [patent_app_number] => 17/788808 [patent_app_country] => US [patent_app_date] => 2020-09-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10743 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [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] => 17788808 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/788808
Laser light source Sep 7, 2020 Issued
Array ( [id] => 19199415 [patent_doc_number] => 11996669 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-05-28 [patent_title] => Method and apparatus for matching impedance of optical components using a tapered transmission line [patent_app_type] => utility [patent_app_number] => 17/003984 [patent_app_country] => US [patent_app_date] => 2020-08-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 20 [patent_figures_cnt] => 36 [patent_no_of_words] => 7839 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 170 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17003984 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/003984
Method and apparatus for matching impedance of optical components using a tapered transmission line Aug 25, 2020 Issued
Array ( [id] => 17700642 [patent_doc_number] => 11374378 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-06-28 [patent_title] => System and method for plasmonic control of short pulses in optical fibers [patent_app_type] => utility [patent_app_number] => 16/999714 [patent_app_country] => US [patent_app_date] => 2020-08-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 11 [patent_no_of_words] => 3918 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 5 [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] => 16999714 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/999714
System and method for plasmonic control of short pulses in optical fibers Aug 20, 2020 Issued
Array ( [id] => 19972695 [patent_doc_number] => 12341319 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-06-24 [patent_title] => Semiconductor laser [patent_app_type] => utility [patent_app_number] => 17/622581 [patent_app_country] => US [patent_app_date] => 2020-08-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 9 [patent_no_of_words] => 4465 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 270 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17622581 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/622581
Semiconductor laser Aug 20, 2020 Issued
Array ( [id] => 17591162 [patent_doc_number] => 11329446 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-05-10 [patent_title] => Optical fiber superluminescent light source [patent_app_type] => utility [patent_app_number] => 16/996975 [patent_app_country] => US [patent_app_date] => 2020-08-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 5301 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 136 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16996975 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/996975
Optical fiber superluminescent light source Aug 18, 2020 Issued
Array ( [id] => 17122504 [patent_doc_number] => 11133652 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-09-28 [patent_title] => Optical devices and methods of manufacture and operation [patent_app_type] => utility [patent_app_number] => 16/945719 [patent_app_country] => US [patent_app_date] => 2020-07-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 40 [patent_figures_cnt] => 75 [patent_no_of_words] => 24067 [patent_no_of_claims] => 29 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 79 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16945719 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/945719
Optical devices and methods of manufacture and operation Jul 30, 2020 Issued
Array ( [id] => 17470497 [patent_doc_number] => 11276981 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-03-15 [patent_title] => PSE device and powered device of optical power supply system, and optical power supply system [patent_app_type] => utility [patent_app_number] => 16/944068 [patent_app_country] => US [patent_app_date] => 2020-07-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 2717 [patent_no_of_claims] => 10 [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] => 16944068 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/944068
PSE device and powered device of optical power supply system, and optical power supply system Jul 29, 2020 Issued
Array ( [id] => 17855865 [patent_doc_number] => 20220285908 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-09-08 [patent_title] => SEMICONDUCTOR LASER DRIVING APPARATUS, ELECTRONIC EQUIPMENT, AND MANUFACTURING METHOD OF SEMICONDUCTOR LASER DRIVING APPARATUS [patent_app_type] => utility [patent_app_number] => 17/641258 [patent_app_country] => US [patent_app_date] => 2020-07-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11375 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [patent_words_short_claim] => 87 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17641258 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/641258
Semiconductor laser driving apparatus, electronic equipment, and manufacturing method of semiconductor laser driving apparatus Jul 19, 2020 Issued
Array ( [id] => 16425164 [patent_doc_number] => 20200350362 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-11-05 [patent_title] => IMAGE DISPLAY DEVICE [patent_app_type] => utility [patent_app_number] => 16/929817 [patent_app_country] => US [patent_app_date] => 2020-07-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 12221 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 143 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16929817 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/929817
Image display device Jul 14, 2020 Issued
Array ( [id] => 17808849 [patent_doc_number] => 20220260684 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-08-18 [patent_title] => LIGHT-EMITTING ELEMENT AND RANGING APPARATUS [patent_app_type] => utility [patent_app_number] => 17/627862 [patent_app_country] => US [patent_app_date] => 2020-07-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 15594 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 138 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17627862 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/627862
LIGHT-EMITTING ELEMENT AND RANGING APPARATUS Jul 14, 2020 Pending
Array ( [id] => 17788232 [patent_doc_number] => 11411371 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2022-08-09 [patent_title] => Carrier sweep-out in a tunable laser [patent_app_type] => utility [patent_app_number] => 16/927506 [patent_app_country] => US [patent_app_date] => 2020-07-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 13 [patent_no_of_words] => 4956 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 86 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16927506 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/927506
Carrier sweep-out in a tunable laser Jul 12, 2020 Issued
Array ( [id] => 17871440 [patent_doc_number] => 20220294177 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-09-15 [patent_title] => ULTRAFAST PULSE LASER SYSTEM WITH MULTIPLE PULSE DURATION FAST SWITCH [patent_app_type] => utility [patent_app_number] => 17/624960 [patent_app_country] => US [patent_app_date] => 2020-07-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4721 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 17624960 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/624960
ULTRAFAST PULSE LASER SYSTEM WITH MULTIPLE PULSE DURATION FAST SWITCH Jul 8, 2020 Abandoned
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