Search

Leonard Chang

Supervisory Patent Examiner (ID: 1206, Phone: (571)270-3691 , Office: P/4166 )

Most Active Art Unit
2812
Art Unit(s)
2898, 2812, 4121, 4100
Total Applications
320
Issued Applications
197
Pending Applications
1
Abandoned Applications
127

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 20485509 [patent_doc_number] => 20260021707 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-01-22 [patent_title] => SAFETY SYSTEM FOR AN ELECTRICALLY DRIVEABLE MOTOR VEHICLE, MOTOR VEHICLE AND METHOD FOR OPERATING A SAFETY SYSTEM [patent_app_type] => utility [patent_app_number] => 18/998057 [patent_app_country] => US [patent_app_date] => 2023-05-31 [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] => -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] => 18998057 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/998057
SAFETY SYSTEM FOR AN ELECTRICALLY DRIVEABLE MOTOR VEHICLE, MOTOR VEHICLE AND METHOD FOR OPERATING A SAFETY SYSTEM May 30, 2023 Pending
Array ( [id] => 18829162 [patent_doc_number] => 20230397685 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-12-14 [patent_title] => SYSTEMS AND METHODS OF A SMART HELMET [patent_app_type] => utility [patent_app_number] => 18/199164 [patent_app_country] => US [patent_app_date] => 2023-05-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13902 [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] => 18199164 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/199164
Systems and methods of a smart helmet May 17, 2023 Issued
Array ( [id] => 18816971 [patent_doc_number] => 20230391311 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-12-07 [patent_title] => CONTROL APPARATUS FOR ELECTRIC VEHICLE AND METHOD OF CONTROLLING ELECTRIC VEHICLE [patent_app_type] => utility [patent_app_number] => 18/318244 [patent_app_country] => US [patent_app_date] => 2023-05-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5147 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -3 [patent_words_short_claim] => 172 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18318244 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/318244
CONTROL APPARATUS FOR ELECTRIC VEHICLE AND METHOD OF CONTROLLING ELECTRIC VEHICLE May 15, 2023 Pending
Array ( [id] => 20128720 [patent_doc_number] => 12371021 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-07-29 [patent_title] => Trailer hitch assist system for a vehicle and associated methods [patent_app_type] => utility [patent_app_number] => 18/140879 [patent_app_country] => US [patent_app_date] => 2023-04-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 7 [patent_no_of_words] => 5624 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 199 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18140879 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/140879
Trailer hitch assist system for a vehicle and associated methods Apr 27, 2023 Issued
Array ( [id] => 18539116 [patent_doc_number] => 20230244224 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-08-03 [patent_title] => REMOTE CONTROLLERS AND STRUCTURES AND SYSTEMS THEREOF [patent_app_type] => utility [patent_app_number] => 18/132358 [patent_app_country] => US [patent_app_date] => 2023-04-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 17718 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 64 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18132358 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/132358
Remote controllers and structures and systems thereof Apr 6, 2023 Issued
Array ( [id] => 18659728 [patent_doc_number] => 20230305735 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-09-28 [patent_title] => Condition-Based Loading of a Subset of a Collision Avoidance and Detection Data Structure [patent_app_type] => utility [patent_app_number] => 18/126414 [patent_app_country] => US [patent_app_date] => 2023-03-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5124 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 18126414 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/126414
Condition-Based Loading of a Subset of a Collision Avoidance and Detection Data Structure Mar 24, 2023 Pending
Array ( [id] => 18649062 [patent_doc_number] => 20230294848 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-09-21 [patent_title] => Off-Channel Unmanned Aerial Vehicle Remote ID Beaconing [patent_app_type] => utility [patent_app_number] => 18/124527 [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] => 5913 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 74 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18124527 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/124527
Off-channel unmanned aerial vehicle remote ID beaconing Mar 20, 2023 Issued
Array ( [id] => 19915984 [patent_doc_number] => 12291334 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-05-06 [patent_title] => Multi-media parcel transportation systems and methods [patent_app_type] => utility [patent_app_number] => 18/184930 [patent_app_country] => US [patent_app_date] => 2023-03-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 12 [patent_no_of_words] => 904 [patent_no_of_claims] => 17 [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] => 18184930 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/184930
Multi-media parcel transportation systems and methods Mar 15, 2023 Issued
Array ( [id] => 18484500 [patent_doc_number] => 20230211805 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-07-06 [patent_title] => Concept For Supporting a Motor Vehicle Being Guided in at Least Partially Automated Manner [patent_app_type] => utility [patent_app_number] => 18/183431 [patent_app_country] => US [patent_app_date] => 2023-03-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9332 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 82 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18183431 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/183431
Concept For Supporting a Motor Vehicle Being Guided in at Least Partially Automated Manner Mar 13, 2023 Pending
Array ( [id] => 18679166 [patent_doc_number] => 20230316819 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-10-05 [patent_title] => CONTROL DEVICE, CONTROL SYSTEM, AND METHOD OF DATA COLLECTION [patent_app_type] => utility [patent_app_number] => 18/182636 [patent_app_country] => US [patent_app_date] => 2023-03-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10577 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [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] => 18182636 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/182636
CONTROL DEVICE, CONTROL SYSTEM, AND METHOD OF DATA COLLECTION Mar 12, 2023 Pending
Array ( [id] => 20157771 [patent_doc_number] => 12384375 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-08-12 [patent_title] => Vehicle system, control method, and storage medium [patent_app_type] => utility [patent_app_number] => 18/119852 [patent_app_country] => US [patent_app_date] => 2023-03-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 5303 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 307 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18119852 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/119852
Vehicle system, control method, and storage medium Mar 9, 2023 Issued
Array ( [id] => 20119769 [patent_doc_number] => 20250234800 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-24 [patent_title] => OFF-GROUND DETECTION DEVICE AND HARVESTER [patent_app_type] => utility [patent_app_number] => 18/838854 [patent_app_country] => US [patent_app_date] => 2023-03-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2339 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 72 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18838854 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/838854
OFF-GROUND DETECTION DEVICE AND HARVESTER Feb 28, 2023 Pending
Array ( [id] => 20337725 [patent_doc_number] => 20250341845 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-11-06 [patent_title] => TRANSPORTATION SYSTEM AND TRANSPORTATION CONTROL METHOD [patent_app_type] => utility [patent_app_number] => 18/855438 [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] => 1096 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -4 [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] => 18855438 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/855438
TRANSPORTATION SYSTEM AND TRANSPORTATION CONTROL METHOD Feb 27, 2023 Pending
Array ( [id] => 19389058 [patent_doc_number] => 20240278928 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-22 [patent_title] => SYSTEM AND METHOD FOR PROCESSING PILOT REPORTS [patent_app_type] => utility [patent_app_number] => 18/172060 [patent_app_country] => US [patent_app_date] => 2023-02-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8989 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 94 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18172060 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/172060
SYSTEM AND METHOD FOR PROCESSING PILOT REPORTS Feb 20, 2023 Pending
Array ( [id] => 18583841 [patent_doc_number] => 20230266102 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-08-24 [patent_title] => APPARATUS AND METHOD FOR DEFENDING A PREDETERMINED AREA FROM AN AUTONOMOUSLY MOVING UNMANNED AERIAL VEHICLE [patent_app_type] => utility [patent_app_number] => 18/169226 [patent_app_country] => US [patent_app_date] => 2023-02-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7308 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 84 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18169226 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/169226
Apparatus and method for defending a predetermined area from an autonomously moving unmanned aerial vehicle Feb 14, 2023 Issued
Array ( [id] => 20079438 [patent_doc_number] => 12353504 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-07-08 [patent_title] => Computer-implemented symbolic differentiation using first-order retraction [patent_app_type] => utility [patent_app_number] => 18/161026 [patent_app_country] => US [patent_app_date] => 2023-01-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 15 [patent_figures_cnt] => 15 [patent_no_of_words] => 14149 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 323 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18161026 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/161026
Computer-implemented symbolic differentiation using first-order retraction Jan 26, 2023 Issued
Array ( [id] => 19905519 [patent_doc_number] => 12282524 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-04-22 [patent_title] => Computer-implemented computation of tangent-space jacobian [patent_app_type] => utility [patent_app_number] => 18/161028 [patent_app_country] => US [patent_app_date] => 2023-01-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 15 [patent_figures_cnt] => 14 [patent_no_of_words] => 14156 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 159 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18161028 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/161028
Computer-implemented computation of tangent-space jacobian Jan 26, 2023 Issued
Array ( [id] => 19262671 [patent_doc_number] => 20240206366 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-06-27 [patent_title] => SYSTEM AND METHOD FOR MONITORING OPERATING CONDITIONS FOR DYNAMIC CONTROL OF AN AGRICULTURAL IMPLEMENT [patent_app_type] => utility [patent_app_number] => 18/101266 [patent_app_country] => US [patent_app_date] => 2023-01-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13685 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 142 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18101266 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/101266
SYSTEM AND METHOD FOR MONITORING OPERATING CONDITIONS FOR DYNAMIC CONTROL OF AN AGRICULTURAL IMPLEMENT Jan 24, 2023 Pending
Array ( [id] => 20416475 [patent_doc_number] => 12499764 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-12-16 [patent_title] => Method and apparatus for vehicle maneuver planning and messaging [patent_app_type] => utility [patent_app_number] => 18/149926 [patent_app_country] => US [patent_app_date] => 2023-01-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 25 [patent_figures_cnt] => 35 [patent_no_of_words] => 22715 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 161 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18149926 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/149926
Method and apparatus for vehicle maneuver planning and messaging Jan 3, 2023 Issued
Array ( [id] => 19248050 [patent_doc_number] => 20240199035 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-06-20 [patent_title] => LOCALIZATION OF A VEHICLE [patent_app_type] => utility [patent_app_number] => 18/066299 [patent_app_country] => US [patent_app_date] => 2022-12-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7913 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 60 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18066299 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/066299
Localization of a vehicle Dec 14, 2022 Issued
Menu