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] => 19108430 [patent_doc_number] => 11961543 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-04-16 [patent_title] => Thermal management of laser diode mode hopping for heat assisted media recording [patent_app_type] => utility [patent_app_number] => 17/898936 [patent_app_country] => US [patent_app_date] => 2022-08-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 15 [patent_figures_cnt] => 16 [patent_no_of_words] => 6962 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 113 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17898936 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/898936
Thermal management of laser diode mode hopping for heat assisted media recording Aug 29, 2022 Issued
Array ( [id] => 18068607 [patent_doc_number] => 20220399695 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-12-15 [patent_title] => OPTICAL SYSTEM FOR INCREASING THE CONTRAST OF PULSED LASER RADIATION, LASER SYSTEM AND METHOD FOR INCREASING THE CONTRAST OF PULSED LASER RADIATION [patent_app_type] => utility [patent_app_number] => 17/889396 [patent_app_country] => US [patent_app_date] => 2022-08-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7957 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [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] => 17889396 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/889396
OPTICAL SYSTEM FOR INCREASING THE CONTRAST OF PULSED LASER RADIATION, LASER SYSTEM AND METHOD FOR INCREASING THE CONTRAST OF PULSED LASER RADIATION Aug 16, 2022 Abandoned
Array ( [id] => 20581560 [patent_doc_number] => 12573816 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-03-10 [patent_title] => Light source module, processing machine, and processing method [patent_app_type] => utility [patent_app_number] => 17/889052 [patent_app_country] => US [patent_app_date] => 2022-08-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 16 [patent_figures_cnt] => 21 [patent_no_of_words] => 10486 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 246 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17889052 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/889052
Light source module, processing machine, and processing method Aug 15, 2022 Issued
Array ( [id] => 18062345 [patent_doc_number] => 20220393432 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-12-08 [patent_title] => BRAGG GRATING AND METHOD FOR MANUFACTURING THE SAME AND DISTRIBUTED FEEDBACK LASER DEVICE [patent_app_type] => utility [patent_app_number] => 17/888066 [patent_app_country] => US [patent_app_date] => 2022-08-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3711 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 152 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17888066 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/888066
BRAGG GRATING AND METHOD FOR MANUFACTURING THE SAME AND DISTRIBUTED FEEDBACK LASER DEVICE Aug 14, 2022 Pending
Array ( [id] => 20674361 [patent_doc_number] => 12614887 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-04-28 [patent_title] => Temporal contrast improvement for short pulse lasers via ionization gratings [patent_app_type] => utility [patent_app_number] => 17/882421 [patent_app_country] => US [patent_app_date] => 2022-08-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 16392 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 325 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17882421 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/882421
Temporal contrast improvement for short pulse lasers via ionization gratings Aug 4, 2022 Issued
Array ( [id] => 18207594 [patent_doc_number] => 20230053851 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-02-23 [patent_title] => HIGH SPEED SPATIAL LIGHT MODULATOR [patent_app_type] => utility [patent_app_number] => 17/815339 [patent_app_country] => US [patent_app_date] => 2022-07-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8596 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 17815339 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/815339
High speed spatial light modulator Jul 26, 2022 Issued
Array ( [id] => 18941294 [patent_doc_number] => 20240036433 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-01 [patent_title] => TUNABLE MID-IR TRANSMITTER FOR HIGH-SPEED FREE SPACE COMMUNICATIONS [patent_app_type] => utility [patent_app_number] => 17/875224 [patent_app_country] => US [patent_app_date] => 2022-07-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4192 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 164 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17875224 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/875224
TUNABLE MID-IR TRANSMITTER FOR HIGH-SPEED FREE SPACE COMMUNICATIONS Jul 26, 2022 Abandoned
Array ( [id] => 17946897 [patent_doc_number] => 20220333916 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-10-20 [patent_title] => FIBER OPTIC VOLTAGE CONDITIONING [patent_app_type] => utility [patent_app_number] => 17/856914 [patent_app_country] => US [patent_app_date] => 2022-07-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7938 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 90 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17856914 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/856914
Fiber optic voltage conditioning Jun 30, 2022 Issued
Array ( [id] => 20746974 [patent_doc_number] => 12646901 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-06-02 [patent_title] => Fiber amplifier [patent_app_type] => utility [patent_app_number] => 17/851307 [patent_app_country] => US [patent_app_date] => 2022-06-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 20 [patent_no_of_words] => 2150 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 202 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17851307 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/851307
Fiber amplifier Jun 27, 2022 Issued
Array ( [id] => 18680588 [patent_doc_number] => 20230318250 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-10-05 [patent_title] => MULTICORE MASTER OSCILLATOR POWER AMPLIFIER [patent_app_type] => utility [patent_app_number] => 17/809417 [patent_app_country] => US [patent_app_date] => 2022-06-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6200 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 93 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17809417 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/809417
MULTICORE MASTER OSCILLATOR POWER AMPLIFIER Jun 27, 2022 Pending
Array ( [id] => 18866477 [patent_doc_number] => 20230420914 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-12-28 [patent_title] => LASER SYSTEM AND METHOD FOR DRIVING A LASER SYSTEM [patent_app_type] => utility [patent_app_number] => 17/808310 [patent_app_country] => US [patent_app_date] => 2022-06-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2541 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [patent_words_short_claim] => 173 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17808310 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/808310
Laser system and method for driving a laser system Jun 22, 2022 Issued
Array ( [id] => 18875113 [patent_doc_number] => 11862939 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2024-01-02 [patent_title] => Ultraviolet laser diode device [patent_app_type] => utility [patent_app_number] => 17/843104 [patent_app_country] => US [patent_app_date] => 2022-06-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 34 [patent_figures_cnt] => 35 [patent_no_of_words] => 12841 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 3 [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] => 17843104 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/843104
Ultraviolet laser diode device Jun 16, 2022 Issued
Array ( [id] => 19016716 [patent_doc_number] => 11923662 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-03-05 [patent_title] => Edge-emitting laser bar [patent_app_type] => utility [patent_app_number] => 17/807272 [patent_app_country] => US [patent_app_date] => 2022-06-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 20 [patent_no_of_words] => 8406 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 327 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17807272 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/807272
Edge-emitting laser bar Jun 15, 2022 Issued
Array ( [id] => 20674365 [patent_doc_number] => 12614891 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-04-28 [patent_title] => Optical element displacement detection circuit [patent_app_type] => utility [patent_app_number] => 17/840949 [patent_app_country] => US [patent_app_date] => 2022-06-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 7 [patent_no_of_words] => 3529 [patent_no_of_claims] => 26 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 179 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17840949 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/840949
Optical element displacement detection circuit Jun 14, 2022 Issued
Array ( [id] => 18857198 [patent_doc_number] => 11854789 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-12-26 [patent_title] => Method for manufacturing gate structure with additional oxide layer [patent_app_type] => utility [patent_app_number] => 17/839054 [patent_app_country] => US [patent_app_date] => 2022-06-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 17 [patent_no_of_words] => 6489 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 143 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17839054 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/839054
Method for manufacturing gate structure with additional oxide layer Jun 12, 2022 Issued
Array ( [id] => 18834280 [patent_doc_number] => 20230402807 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-12-14 [patent_title] => FIBER-COUPLED LASER SYSTEMS WITH CONTROLLABLE BEAM SHAPES [patent_app_type] => utility [patent_app_number] => 17/806281 [patent_app_country] => US [patent_app_date] => 2022-06-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6604 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 176 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17806281 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/806281
FIBER-COUPLED LASER SYSTEMS WITH CONTROLLABLE BEAM SHAPES Jun 9, 2022 Pending
Array ( [id] => 17887187 [patent_doc_number] => 20220302665 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-09-22 [patent_title] => METHODS AND DEVICES FOR LASER BEAM PARAMETERS SENSING AND CONTROL WITH FIBER-TIP INTEGRATED SYSTEMS [patent_app_type] => utility [patent_app_number] => 17/804917 [patent_app_country] => US [patent_app_date] => 2022-06-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8327 [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] => 17804917 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/804917
Methods and devices for laser beam parameters sensing and control with fiber-tip integrated systems May 31, 2022 Issued
Array ( [id] => 17871439 [patent_doc_number] => 20220294176 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-09-15 [patent_title] => FIBER LASER SYSTEM BASED ON SOLITONIC PASSIVE MODE-LOCKING [patent_app_type] => utility [patent_app_number] => 17/825606 [patent_app_country] => US [patent_app_date] => 2022-05-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6421 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 266 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17825606 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/825606
Fiber laser system based on solitonic passive mode-locking May 25, 2022 Issued
Array ( [id] => 19935390 [patent_doc_number] => 12308600 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-05-20 [patent_title] => Light source apparatus and inspection apparatus [patent_app_type] => utility [patent_app_number] => 17/664183 [patent_app_country] => US [patent_app_date] => 2022-05-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 16 [patent_no_of_words] => 2108 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 102 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17664183 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/664183
Light source apparatus and inspection apparatus May 18, 2022 Issued
Array ( [id] => 18705083 [patent_doc_number] => 11791603 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-10-17 [patent_title] => Q-switched cavity dumped sub-nanosecond laser [patent_app_type] => utility [patent_app_number] => 17/747098 [patent_app_country] => US [patent_app_date] => 2022-05-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 20 [patent_figures_cnt] => 31 [patent_no_of_words] => 16220 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 111 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17747098 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/747098
Q-switched cavity dumped sub-nanosecond laser May 17, 2022 Issued
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