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] => 20454236 [patent_doc_number] => 12517288 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-01-06 [patent_title] => Diffusion plate, display device, projection device, lighting device, and remote sensing light source [patent_app_type] => utility [patent_app_number] => 18/030914 [patent_app_country] => US [patent_app_date] => 2021-12-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 33 [patent_figures_cnt] => 33 [patent_no_of_words] => 14141 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 427 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18030914 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/030914
Diffusion plate, display device, projection device, lighting device, and remote sensing light source Dec 13, 2021 Issued
Array ( [id] => 20743213 [patent_doc_number] => 12643097 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-06-02 [patent_title] => Support for analysing by microscope a liquid-based biological substance and system comprising such a support and a microscope [patent_app_type] => utility [patent_app_number] => 18/258916 [patent_app_country] => US [patent_app_date] => 2021-12-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 13 [patent_no_of_words] => 3317 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 548 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18258916 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/258916
Support for analysing by microscope a liquid-based biological substance and system comprising such a support and a microscope Dec 12, 2021 Issued
Array ( [id] => 18904230 [patent_doc_number] => 20240019715 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-01-18 [patent_title] => AIR FLOATING VIDEO DISPLAY APPARATUS [patent_app_type] => utility [patent_app_number] => 18/268329 [patent_app_country] => US [patent_app_date] => 2021-12-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 31382 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -31 [patent_words_short_claim] => 22 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18268329 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/268329
AIR FLOATING VIDEO DISPLAY APPARATUS Dec 12, 2021 Pending
Array ( [id] => 17658795 [patent_doc_number] => 20220179260 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-06-09 [patent_title] => COLOR FILTER ARRAY AND COLOR ELECTROPHORETIC DISPLAY HAVING THE SAME [patent_app_type] => utility [patent_app_number] => 17/457436 [patent_app_country] => US [patent_app_date] => 2021-12-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3368 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 146 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17457436 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/457436
Color filter array and color electrophoretic display having the same Dec 2, 2021 Issued
Array ( [id] => 20358612 [patent_doc_number] => 12474604 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-11-18 [patent_title] => Large area infrared sensor film [patent_app_type] => utility [patent_app_number] => 18/037412 [patent_app_country] => US [patent_app_date] => 2021-12-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 7 [patent_no_of_words] => 0 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 230 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18037412 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/037412
Large area infrared sensor film Dec 1, 2021 Issued
Array ( [id] => 18261770 [patent_doc_number] => 11609470 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2023-03-21 [patent_title] => Writing device including cholesteric liquid crystal and having sectional erase [patent_app_type] => utility [patent_app_number] => 17/535758 [patent_app_country] => US [patent_app_date] => 2021-11-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 7 [patent_no_of_words] => 5548 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 131 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17535758 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/535758
Writing device including cholesteric liquid crystal and having sectional erase Nov 25, 2021 Issued
Array ( [id] => 18991359 [patent_doc_number] => 20240063328 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-22 [patent_title] => LIGHT-EMITTING ELEMENT, OPTICAL DETECTION MODULE, MANUFACTURING METHOD FOR LIGHT-EMITTING ELEMENT, AND SCANNING ELECTRON MICROSCOPE [patent_app_type] => utility [patent_app_number] => 18/270008 [patent_app_country] => US [patent_app_date] => 2021-11-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6930 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 44 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18270008 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/270008
Light-emitting element, optical detection module, manufacturing method for light-emitting element, and scanning electron microscope Nov 24, 2021 Issued
Array ( [id] => 17831823 [patent_doc_number] => 20220269127 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-08-25 [patent_title] => DISPLAY PANEL, TOUCH DISPLAY PANEL, AND DISPLAY DEVICE [patent_app_type] => utility [patent_app_number] => 17/526715 [patent_app_country] => US [patent_app_date] => 2021-11-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5583 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 52 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17526715 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/526715
Display panel, touch display panel, and display device Nov 14, 2021 Issued
Array ( [id] => 19016431 [patent_doc_number] => 11923376 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-03-05 [patent_title] => Electronic device [patent_app_type] => utility [patent_app_number] => 17/522156 [patent_app_country] => US [patent_app_date] => 2021-11-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 10 [patent_no_of_words] => 6613 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 280 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17522156 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/522156
Electronic device Nov 8, 2021 Issued
Array ( [id] => 19122132 [patent_doc_number] => 11966112 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-04-23 [patent_title] => Detection apparatus [patent_app_type] => utility [patent_app_number] => 17/453224 [patent_app_country] => US [patent_app_date] => 2021-11-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 25 [patent_figures_cnt] => 29 [patent_no_of_words] => 17202 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 231 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17453224 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/453224
Detection apparatus Nov 1, 2021 Issued
Array ( [id] => 18282578 [patent_doc_number] => 20230098050 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-03-30 [patent_title] => PIXEL UNIT OF A DISPLAY PANEL AND DISPLAY PANEL [patent_app_type] => utility [patent_app_number] => 17/614502 [patent_app_country] => US [patent_app_date] => 2021-10-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4340 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 157 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17614502 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/614502
Pixel unit of a display panel and display panel Oct 27, 2021 Issued
Array ( [id] => 18889234 [patent_doc_number] => 11868003 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-01-09 [patent_title] => Driving backplate and display device [patent_app_type] => utility [patent_app_number] => 17/477133 [patent_app_country] => US [patent_app_date] => 2021-09-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 16 [patent_figures_cnt] => 32 [patent_no_of_words] => 7958 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 149 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17477133 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/477133
Driving backplate and display device Sep 15, 2021 Issued
Array ( [id] => 17320534 [patent_doc_number] => 20210409584 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-12-30 [patent_title] => DISPLAY DEVICE [patent_app_type] => utility [patent_app_number] => 17/447716 [patent_app_country] => US [patent_app_date] => 2021-09-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7478 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [patent_words_short_claim] => 30 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17447716 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/447716
Display device Sep 14, 2021 Issued
Array ( [id] => 17475392 [patent_doc_number] => 20220082896 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-03-17 [patent_title] => FOUR PARTICLE ELECTROPHORETIC MEDIUM PROVIDING FAST, HIGH-CONTRAST OPTICAL STATE SWITCHING [patent_app_type] => utility [patent_app_number] => 17/474582 [patent_app_country] => US [patent_app_date] => 2021-09-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 15202 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 130 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17474582 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/474582
Four particle electrophoretic medium providing fast, high-contrast optical state switching Sep 13, 2021 Issued
Array ( [id] => 18479519 [patent_doc_number] => 11693254 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-07-04 [patent_title] => Light field display device having improved viewing angle [patent_app_type] => utility [patent_app_number] => 17/473121 [patent_app_country] => US [patent_app_date] => 2021-09-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 14 [patent_no_of_words] => 8466 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 1 [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] => 17473121 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/473121
Light field display device having improved viewing angle Sep 12, 2021 Issued
Array ( [id] => 18741263 [patent_doc_number] => 20230350244 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-11-02 [patent_title] => Reflective Polarizer and Display System Including Same [patent_app_type] => utility [patent_app_number] => 18/247209 [patent_app_country] => US [patent_app_date] => 2021-09-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8047 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [patent_words_short_claim] => 261 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18247209 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/247209
Reflective polarizer and display system including same Sep 9, 2021 Issued
Array ( [id] => 18217786 [patent_doc_number] => 11592719 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-02-28 [patent_title] => Liquid crystal display device [patent_app_type] => utility [patent_app_number] => 17/462035 [patent_app_country] => US [patent_app_date] => 2021-08-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 112 [patent_figures_cnt] => 142 [patent_no_of_words] => 37628 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 204 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17462035 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/462035
Liquid crystal display device Aug 30, 2021 Issued
Array ( [id] => 18577056 [patent_doc_number] => 11733581 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-08-22 [patent_title] => Reflective display [patent_app_type] => utility [patent_app_number] => 17/445953 [patent_app_country] => US [patent_app_date] => 2021-08-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 10 [patent_no_of_words] => 4941 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 256 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17445953 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/445953
Reflective display Aug 25, 2021 Issued
Array ( [id] => 17463891 [patent_doc_number] => 20220077197 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-03-10 [patent_title] => DISPLAY DEVICE [patent_app_type] => utility [patent_app_number] => 17/412175 [patent_app_country] => US [patent_app_date] => 2021-08-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 23615 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 76 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17412175 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/412175
Display device Aug 24, 2021 Issued
Array ( [id] => 18727364 [patent_doc_number] => 20230341650 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-10-26 [patent_title] => LENS DRIVING APPARATUS, AND CAMERA MODULE AND OPTICAL DEVICE COMPRISING SAME [patent_app_type] => utility [patent_app_number] => 18/014402 [patent_app_country] => US [patent_app_date] => 2021-08-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 42832 [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] => 18014402 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/014402
LENS DRIVING APPARATUS, AND CAMERA MODULE AND OPTICAL DEVICE COMPRISING SAME Aug 23, 2021 Pending
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