Search

David E. Choi

Examiner (ID: 18726, Phone: (571)270-3780 , Office: P/2174 )

Most Active Art Unit
2174
Art Unit(s)
2174, 2173, 2148
Total Applications
766
Issued Applications
584
Pending Applications
52
Abandoned Applications
150

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 20264864 [patent_doc_number] => 12435847 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-10-07 [patent_title] => Devices and systems having LED circuits and methods of driving the same [patent_app_type] => utility [patent_app_number] => 18/629212 [patent_app_country] => US [patent_app_date] => 2024-04-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 24 [patent_no_of_words] => 2473 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 91 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18629212 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/629212
Devices and systems having LED circuits and methods of driving the same Apr 7, 2024 Issued
Array ( [id] => 20292787 [patent_doc_number] => 20250318030 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-10-09 [patent_title] => APPARATUSES, SYSTEMS, AND METHODS FOR CONTROLLING ELECTRICAL POWER FOR LIGHTING LOADS [patent_app_type] => utility [patent_app_number] => 18/628491 [patent_app_country] => US [patent_app_date] => 2024-04-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4691 [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] => 18628491 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/628491
APPARATUSES, SYSTEMS, AND METHODS FOR CONTROLLING ELECTRICAL POWER FOR LIGHTING LOADS Apr 4, 2024 Pending
Array ( [id] => 20230301 [patent_doc_number] => 12418966 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-09-16 [patent_title] => Constant-current control circuit and method for constant-current control [patent_app_type] => utility [patent_app_number] => 18/624919 [patent_app_country] => US [patent_app_date] => 2024-04-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 6 [patent_no_of_words] => 0 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 114 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18624919 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/624919
Constant-current control circuit and method for constant-current control Apr 1, 2024 Issued
Array ( [id] => 19641622 [patent_doc_number] => 20240416142 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-12-19 [patent_title] => SWITCHABLE BIOACTIVE LIGHTING [patent_app_type] => utility [patent_app_number] => 18/617143 [patent_app_country] => US [patent_app_date] => 2024-03-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 53355 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -7 [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] => 18617143 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/617143
SWITCHABLE BIOACTIVE LIGHTING Mar 25, 2024 Pending
Array ( [id] => 20004474 [patent_doc_number] => 20250142696 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-05-01 [patent_title] => CONTROL CIRCUIT FOR DRIVING DIFFERENT COLOR TEMPERATURE LED LIGHTS WITH AC INPUT VOLTAGE [patent_app_type] => utility [patent_app_number] => 18/609110 [patent_app_country] => US [patent_app_date] => 2024-03-19 [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] => -5 [patent_words_short_claim] => 178 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18609110 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/609110
CONTROL CIRCUIT FOR DRIVING DIFFERENT COLOR TEMPERATURE LED LIGHTS WITH AC INPUT VOLTAGE Mar 18, 2024 Pending
Array ( [id] => 19454770 [patent_doc_number] => 20240314900 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-09-19 [patent_title] => LIGHTING CONTROL CIRCUIT, LIGHTING CONTROL METHOD, AND LIGHTING CIRCUIT [patent_app_type] => utility [patent_app_number] => 18/590802 [patent_app_country] => US [patent_app_date] => 2024-02-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8242 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [patent_words_short_claim] => 188 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18590802 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/590802
LIGHTING CONTROL CIRCUIT, LIGHTING CONTROL METHOD, AND LIGHTING CIRCUIT Feb 27, 2024 Pending
Array ( [id] => 19255039 [patent_doc_number] => 20240206036 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-06-20 [patent_title] => SWITCHING POWER SUPPLY WITH CONSTANT CURRENT OUTPUT AND A METHOD FOR CONTROLLING CONSTANT CURRENT OF A SWITCHING POWER SUPPLY [patent_app_type] => utility [patent_app_number] => 18/588243 [patent_app_country] => US [patent_app_date] => 2024-02-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2292 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -7 [patent_words_short_claim] => 92 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18588243 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/588243
SWITCHING POWER SUPPLY WITH CONSTANT CURRENT OUTPUT AND A METHOD FOR CONTROLLING CONSTANT CURRENT OF A SWITCHING POWER SUPPLY Feb 26, 2024 Pending
Array ( [id] => 20332716 [patent_doc_number] => 12463000 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-11-04 [patent_title] => Magneto-electrostatic sensing, focusing, and steering of electron beams in vacuum electron devices [patent_app_type] => utility [patent_app_number] => 18/588895 [patent_app_country] => US [patent_app_date] => 2024-02-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 16 [patent_no_of_words] => 1030 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 176 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18588895 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/588895
Magneto-electrostatic sensing, focusing, and steering of electron beams in vacuum electron devices Feb 26, 2024 Issued
Array ( [id] => 19728538 [patent_doc_number] => 20250031289 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-01-23 [patent_title] => LAMP SYSTEM FOR VEHICLE [patent_app_type] => utility [patent_app_number] => 18/587436 [patent_app_country] => US [patent_app_date] => 2024-02-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3490 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 101 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18587436 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/587436
LAMP SYSTEM FOR VEHICLE Feb 25, 2024 Pending
Array ( [id] => 19512998 [patent_doc_number] => 20240344684 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-10-17 [patent_title] => DIGITAL LAMPSHADE SYSTEM AND METHOD [patent_app_type] => utility [patent_app_number] => 18/443921 [patent_app_country] => US [patent_app_date] => 2024-02-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9380 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 48 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18443921 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/443921
DIGITAL LAMPSHADE SYSTEM AND METHOD Feb 15, 2024 Pending
Array ( [id] => 19386742 [patent_doc_number] => 20240276612 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-15 [patent_title] => SYSTEM AND METHOD FOR DYNAMIC CONTROL OF 2-STAGE LIGHT DRIVER [patent_app_type] => utility [patent_app_number] => 18/438291 [patent_app_country] => US [patent_app_date] => 2024-02-09 [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] => 95 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18438291 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/438291
SYSTEM AND METHOD FOR DYNAMIC CONTROL OF 2-STAGE LIGHT DRIVER Feb 8, 2024 Pending
Array ( [id] => 19813916 [patent_doc_number] => 12245345 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2025-03-04 [patent_title] => System and method for voice-activated lighting control [patent_app_type] => utility [patent_app_number] => 18/436488 [patent_app_country] => US [patent_app_date] => 2024-02-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 3432 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 281 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18436488 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/436488
System and method for voice-activated lighting control Feb 7, 2024 Issued
Array ( [id] => 19178018 [patent_doc_number] => 20240163992 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-16 [patent_title] => DIM-TO-WARM LIGHTING [patent_app_type] => utility [patent_app_number] => 18/417161 [patent_app_country] => US [patent_app_date] => 2024-01-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10101 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [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] => 18417161 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/417161
Dim-to-warm lighting Jan 18, 2024 Issued
Array ( [id] => 19837351 [patent_doc_number] => 20250089137 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-03-13 [patent_title] => DRIVER CIRCUIT FOR ADAPTIVELY SWITCHING LIGHT-EMITTING DIODE CURRENT [patent_app_type] => utility [patent_app_number] => 18/415581 [patent_app_country] => US [patent_app_date] => 2024-01-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4224 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [patent_words_short_claim] => 303 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18415581 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/415581
Driver circuit for adaptively switching light-emitting diode current Jan 16, 2024 Issued
Array ( [id] => 19163038 [patent_doc_number] => 20240155745 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-09 [patent_title] => LIGHT SOURCE DRIVING DEVICE, LIGHT EMITTING DEVICE, AND LIGHT SOURCE DRIVING METHOD [patent_app_type] => utility [patent_app_number] => 18/414945 [patent_app_country] => US [patent_app_date] => 2024-01-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5818 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [patent_words_short_claim] => 224 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18414945 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/414945
LIGHT SOURCE DRIVING DEVICE, LIGHT EMITTING DEVICE, AND LIGHT SOURCE DRIVING METHOD Jan 16, 2024 Pending
Array ( [id] => 19174370 [patent_doc_number] => 20240160344 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-16 [patent_title] => VEHICLE LIGHTING DEVICE [patent_app_type] => utility [patent_app_number] => 18/406675 [patent_app_country] => US [patent_app_date] => 2024-01-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6917 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [patent_words_short_claim] => 70 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18406675 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/406675
Vehicle lighting device Jan 7, 2024 Issued
Array ( [id] => 19132686 [patent_doc_number] => 20240138039 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-04-25 [patent_title] => LEVEL SHIFTER, SEMICONDUCTOR DEVICE, SWITCHING POWER SUPPLY, AND LIGHT EMITTING DEVICE [patent_app_type] => utility [patent_app_number] => 18/400443 [patent_app_country] => US [patent_app_date] => 2023-12-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5469 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 137 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18400443 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/400443
Level shifter, semiconductor device, switching power supply, and light emitting device Dec 28, 2023 Issued
Array ( [id] => 19132686 [patent_doc_number] => 20240138039 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-04-25 [patent_title] => LEVEL SHIFTER, SEMICONDUCTOR DEVICE, SWITCHING POWER SUPPLY, AND LIGHT EMITTING DEVICE [patent_app_type] => utility [patent_app_number] => 18/400443 [patent_app_country] => US [patent_app_date] => 2023-12-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5469 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 137 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18400443 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/400443
Level shifter, semiconductor device, switching power supply, and light emitting device Dec 28, 2023 Issued
Array ( [id] => 19132687 [patent_doc_number] => 20240138040 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-04-25 [patent_title] => SELF-IDENTIFYING SOLID-STATE TRANSDUCER MODULES AND ASSOCIATED SYSTEMS AND METHODS [patent_app_type] => utility [patent_app_number] => 18/401227 [patent_app_country] => US [patent_app_date] => 2023-12-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4750 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 91 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18401227 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/401227
Self-identifying solid-state transducer modules and associated systems and methods Dec 28, 2023 Issued
Array ( [id] => 19118268 [patent_doc_number] => 20240130018 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-04-18 [patent_title] => SEMICONDUCTOR DEVICE, SWITCHING POWER SUPPLY, AND LIGHTING DEVICE [patent_app_type] => utility [patent_app_number] => 18/397488 [patent_app_country] => US [patent_app_date] => 2023-12-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7139 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 112 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18397488 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/397488
SEMICONDUCTOR DEVICE, SWITCHING POWER SUPPLY, AND LIGHTING DEVICE Dec 26, 2023 Pending
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