Search

Charles S. Chang

Examiner (ID: 4092, Phone: (571)270-5024 , Office: P/2871 )

Most Active Art Unit
2871
Art Unit(s)
2881, 2871, 2883
Total Applications
1232
Issued Applications
938
Pending Applications
67
Abandoned Applications
244

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 19810778 [patent_doc_number] => 12242166 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-03-04 [patent_title] => Fresnel liquid crystal lens structure and display device [patent_app_type] => utility [patent_app_number] => 17/770256 [patent_app_country] => US [patent_app_date] => 2021-03-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 17 [patent_no_of_words] => 8737 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 379 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17770256 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/770256
Fresnel liquid crystal lens structure and display device Mar 9, 2021 Issued
Array ( [id] => 18482911 [patent_doc_number] => 20230210200 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-07-06 [patent_title] => A COMBINED PHOSPHORESCENT, RETROREFLECTIVE AND FLUORESCENT ARTICLE [patent_app_type] => utility [patent_app_number] => 17/909723 [patent_app_country] => US [patent_app_date] => 2021-03-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6818 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [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] => 17909723 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/909723
Combined phosphorescent, retroreflective and fluorescent article Mar 4, 2021 Issued
Array ( [id] => 19014459 [patent_doc_number] => 11921386 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-03-05 [patent_title] => Display device [patent_app_type] => utility [patent_app_number] => 17/193729 [patent_app_country] => US [patent_app_date] => 2021-03-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 4194 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 177 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17193729 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/193729
Display device Mar 4, 2021 Issued
Array ( [id] => 18395044 [patent_doc_number] => 20230163265 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-05-25 [patent_title] => OPTICAL FILM AND MICRO LED DISPLAY COMPRISING THEREOF [patent_app_type] => utility [patent_app_number] => 17/908790 [patent_app_country] => US [patent_app_date] => 2021-03-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9164 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [patent_words_short_claim] => 179 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17908790 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/908790
Optical film and micro LED display comprising thereof Mar 1, 2021 Issued
Array ( [id] => 16887065 [patent_doc_number] => 20210173262 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-06-10 [patent_title] => LIQUID CRYSTAL PANEL AND METHOD OF MANUFACTURING THEREOF [patent_app_type] => utility [patent_app_number] => 17/181285 [patent_app_country] => US [patent_app_date] => 2021-02-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 20514 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [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] => 17181285 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/181285
Liquid crystal panel and method of manufacturing thereof Feb 21, 2021 Issued
Array ( [id] => 17454370 [patent_doc_number] => 11269227 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-03-08 [patent_title] => Display device [patent_app_type] => utility [patent_app_number] => 17/179529 [patent_app_country] => US [patent_app_date] => 2021-02-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 16 [patent_no_of_words] => 7230 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 168 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17179529 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/179529
Display device Feb 18, 2021 Issued
Array ( [id] => 17287976 [patent_doc_number] => 11204523 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-12-21 [patent_title] => Display device and surface light source [patent_app_type] => utility [patent_app_number] => 17/179550 [patent_app_country] => US [patent_app_date] => 2021-02-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 15 [patent_no_of_words] => 14784 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 5 [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] => 17179550 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/179550
Display device and surface light source Feb 18, 2021 Issued
Array ( [id] => 17437307 [patent_doc_number] => 11262635 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2022-03-01 [patent_title] => Magnet erased eWriter [patent_app_type] => utility [patent_app_number] => 17/168507 [patent_app_country] => US [patent_app_date] => 2021-02-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 6 [patent_no_of_words] => 3366 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 107 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17168507 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/168507
Magnet erased eWriter Feb 4, 2021 Issued
Array ( [id] => 18316282 [patent_doc_number] => 11630360 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-04-18 [patent_title] => Liquid crystal display device [patent_app_type] => utility [patent_app_number] => 17/163939 [patent_app_country] => US [patent_app_date] => 2021-02-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 78 [patent_figures_cnt] => 78 [patent_no_of_words] => 26722 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 184 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17163939 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/163939
Liquid crystal display device Jan 31, 2021 Issued
Array ( [id] => 17898720 [patent_doc_number] => 20220308382 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-09-29 [patent_title] => DISPLAY PANEL AND DISPLAY DEVICE [patent_app_type] => utility [patent_app_number] => 17/424423 [patent_app_country] => US [patent_app_date] => 2021-01-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5704 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 124 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17424423 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/424423
Display panel and display device Jan 25, 2021 Issued
Array ( [id] => 18196679 [patent_doc_number] => 20230050198 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-02-16 [patent_title] => NEAR-EYE DISPLAY BASED ON CONICAL DIFFRACTION [patent_app_type] => utility [patent_app_number] => 17/794251 [patent_app_country] => US [patent_app_date] => 2021-01-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 21661 [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] => 17794251 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/794251
Near-eye display based on conical diffraction Jan 19, 2021 Issued
Array ( [id] => 18780454 [patent_doc_number] => 11822174 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-11-21 [patent_title] => Button composite structure [patent_app_type] => utility [patent_app_number] => 17/798058 [patent_app_country] => US [patent_app_date] => 2021-01-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 6490 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 167 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17798058 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/798058
Button composite structure Jan 11, 2021 Issued
Array ( [id] => 16848514 [patent_doc_number] => 20210149259 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-05-20 [patent_title] => BLACK MATRIX SUBSTRATE AND DISPLAY DEVICE [patent_app_type] => utility [patent_app_number] => 17/135176 [patent_app_country] => US [patent_app_date] => 2020-12-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 21181 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 281 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17135176 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/135176
Black matrix substrate and display device Dec 27, 2020 Issued
Array ( [id] => 16751179 [patent_doc_number] => 20210103188 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-04-08 [patent_title] => Full-Screen Optical Component and Electronic Device [patent_app_type] => utility [patent_app_number] => 17/126722 [patent_app_country] => US [patent_app_date] => 2020-12-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10414 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 258 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17126722 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/126722
Full-screen optical component and electronic device Dec 17, 2020 Issued
Array ( [id] => 17345295 [patent_doc_number] => 20220011626 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-01-13 [patent_title] => TOUCH DISPLAY DEVICE [patent_app_type] => utility [patent_app_number] => 17/116497 [patent_app_country] => US [patent_app_date] => 2020-12-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2765 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -4 [patent_words_short_claim] => 131 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17116497 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/116497
TOUCH DISPLAY DEVICE Dec 8, 2020 Abandoned
Array ( [id] => 18343970 [patent_doc_number] => 11641458 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-05-02 [patent_title] => Autostereoscopic devices and methods for producing 3D images [patent_app_type] => utility [patent_app_number] => 17/116179 [patent_app_country] => US [patent_app_date] => 2020-12-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 6 [patent_no_of_words] => 4499 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 99 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17116179 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/116179
Autostereoscopic devices and methods for producing 3D images Dec 8, 2020 Issued
Array ( [id] => 19978434 [patent_doc_number] => 12345908 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-07-01 [patent_title] => Reflective polarizer and display system [patent_app_type] => utility [patent_app_number] => 17/779413 [patent_app_country] => US [patent_app_date] => 2020-12-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 35 [patent_figures_cnt] => 36 [patent_no_of_words] => 7488 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 128 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17779413 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/779413
Reflective polarizer and display system Dec 7, 2020 Issued
Array ( [id] => 18037746 [patent_doc_number] => 20220381962 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-12-01 [patent_title] => OPTICAL FILTER AND METHOD FOR MANUFACTURING SAME [patent_app_type] => utility [patent_app_number] => 17/775412 [patent_app_country] => US [patent_app_date] => 2020-12-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5524 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -4 [patent_words_short_claim] => 50 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17775412 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/775412
Optical filter and method for manufacturing same Dec 2, 2020 Issued
Array ( [id] => 18145699 [patent_doc_number] => 20230019555 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-01-19 [patent_title] => LENTICULAR OPTICAL COMPOSITE FILM, PREPARATION METHOD THEREFOR, AND 3D DISPLAY [patent_app_type] => utility [patent_app_number] => 17/779545 [patent_app_country] => US [patent_app_date] => 2020-12-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13250 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 75 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17779545 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/779545
LENTICULAR OPTICAL COMPOSITE FILM, PREPARATION METHOD THEREFOR, AND 3D DISPLAY Dec 1, 2020 Abandoned
Array ( [id] => 16902638 [patent_doc_number] => 20210181554 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-06-17 [patent_title] => DISPLAY APPARATUS COMPRISING THIN FILM TRANSISTOR [patent_app_type] => utility [patent_app_number] => 17/108598 [patent_app_country] => US [patent_app_date] => 2020-12-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 12689 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 113 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17108598 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/108598
Display apparatus comprising thin film transistor Nov 30, 2020 Issued
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