
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 number | Title of the application | Filing Date | Status |
|---|---|---|---|
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 |