Search

Leonard Chang

Supervisory Patent Examiner (ID: 7771, Phone: (571)270-3691 , Office: P/4166 )

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

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 18606219 [patent_doc_number] => 11747682 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-09-05 [patent_title] => Pixel electrode, display panel, and display device [patent_app_type] => utility [patent_app_number] => 17/046796 [patent_app_country] => US [patent_app_date] => 2020-09-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 3395 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 348 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17046796 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/046796
Pixel electrode, display panel, and display device Sep 7, 2020 Issued
Array ( [id] => 18584241 [patent_doc_number] => 20230266504 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-08-24 [patent_title] => Optical Element [patent_app_type] => utility [patent_app_number] => 18/041056 [patent_app_country] => US [patent_app_date] => 2020-09-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3189 [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] => 18041056 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/041056
Optical Element Aug 31, 2020 Pending
Array ( [id] => 17924203 [patent_doc_number] => 11467450 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-10-11 [patent_title] => Optical assembly, liquid crystal display panel, and display apparatus [patent_app_type] => utility [patent_app_number] => 17/290484 [patent_app_country] => US [patent_app_date] => 2020-08-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 16 [patent_figures_cnt] => 17 [patent_no_of_words] => 7947 [patent_no_of_claims] => 11 [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] => 17290484 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/290484
Optical assembly, liquid crystal display panel, and display apparatus Aug 25, 2020 Issued
Array ( [id] => 17636369 [patent_doc_number] => 11347090 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-05-31 [patent_title] => Liquid crystal display panel, driving method thereof, and display device [patent_app_type] => utility [patent_app_number] => 17/286640 [patent_app_country] => US [patent_app_date] => 2020-08-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 9 [patent_no_of_words] => 10478 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 407 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17286640 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/286640
Liquid crystal display panel, driving method thereof, and display device Aug 24, 2020 Issued
Array ( [id] => 16675063 [patent_doc_number] => 20210063827 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-03-04 [patent_title] => LIQUID CRYSTAL DISPLAY DEVICE [patent_app_type] => utility [patent_app_number] => 16/998725 [patent_app_country] => US [patent_app_date] => 2020-08-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5752 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [patent_words_short_claim] => 108 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16998725 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/998725
LIQUID CRYSTAL DISPLAY DEVICE Aug 19, 2020 Abandoned
Array ( [id] => 16526944 [patent_doc_number] => 20200401024 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-12-24 [patent_title] => Active optical rotator and optical system for LCD projector [patent_app_type] => utility [patent_app_number] => 16/997959 [patent_app_country] => US [patent_app_date] => 2020-08-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3339 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [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] => 16997959 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/997959
Active optical rotator and optical system for LCD projector Aug 19, 2020 Abandoned
Array ( [id] => 17379439 [patent_doc_number] => 11237451 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-02-01 [patent_title] => Optical device, imaging device, focus driving method, and method for moving lens center [patent_app_type] => utility [patent_app_number] => 16/988648 [patent_app_country] => US [patent_app_date] => 2020-08-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 29 [patent_figures_cnt] => 62 [patent_no_of_words] => 18012 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 454 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16988648 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/988648
Optical device, imaging device, focus driving method, and method for moving lens center Aug 7, 2020 Issued
Array ( [id] => 17324888 [patent_doc_number] => 11215895 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-01-04 [patent_title] => Variable-focus virtual image devices based on polarization conversion [patent_app_type] => utility [patent_app_number] => 16/986106 [patent_app_country] => US [patent_app_date] => 2020-08-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 58 [patent_figures_cnt] => 67 [patent_no_of_words] => 38925 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 155 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16986106 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/986106
Variable-focus virtual image devices based on polarization conversion Aug 4, 2020 Issued
Array ( [id] => 17046271 [patent_doc_number] => 11099447 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-08-24 [patent_title] => Optical stack for privacy display [patent_app_type] => utility [patent_app_number] => 16/945355 [patent_app_country] => US [patent_app_date] => 2020-07-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 18 [patent_figures_cnt] => 33 [patent_no_of_words] => 16732 [patent_no_of_claims] => 30 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 152 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16945355 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/945355
Optical stack for privacy display Jul 30, 2020 Issued
Array ( [id] => 17529524 [patent_doc_number] => 11302222 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-04-12 [patent_title] => Display device [patent_app_type] => utility [patent_app_number] => 16/937604 [patent_app_country] => US [patent_app_date] => 2020-07-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 13 [patent_no_of_words] => 9579 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 121 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16937604 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/937604
Display device Jul 23, 2020 Issued
Array ( [id] => 17770629 [patent_doc_number] => 11402565 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-08-02 [patent_title] => Display substrate, display panel and display device [patent_app_type] => utility [patent_app_number] => 17/265221 [patent_app_country] => US [patent_app_date] => 2020-07-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 23 [patent_no_of_words] => 8814 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 222 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17265221 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/265221
Display substrate, display panel and display device Jul 23, 2020 Issued
Array ( [id] => 16599674 [patent_doc_number] => 20210026205 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-01-28 [patent_title] => METHOD FOR PRODUCING LIQUID CRYSTAL DISPLAY DEVICE AND ELECTRONIC APPARATUS [patent_app_type] => utility [patent_app_number] => 16/936880 [patent_app_country] => US [patent_app_date] => 2020-07-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7508 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [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] => 16936880 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/936880
Method for producing liquid crystal display device and electronic apparatus Jul 22, 2020 Issued
Array ( [id] => 17961681 [patent_doc_number] => 20220342262 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-10-27 [patent_title] => DISPLAY PANEL AND DISPLAY DEVICE [patent_app_type] => utility [patent_app_number] => 17/422716 [patent_app_country] => US [patent_app_date] => 2020-07-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5537 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [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] => 17422716 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/422716
DISPLAY PANEL AND DISPLAY DEVICE Jul 21, 2020 Abandoned
Array ( [id] => 17276157 [patent_doc_number] => 20210382355 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-12-09 [patent_title] => DISPLAY PANEL AND DISPLAY DEVICE [patent_app_type] => utility [patent_app_number] => 16/980438 [patent_app_country] => US [patent_app_date] => 2020-07-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2164 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 88 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16980438 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/980438
DISPLAY PANEL AND DISPLAY DEVICE Jul 13, 2020 Abandoned
Array ( [id] => 17276152 [patent_doc_number] => 20210382350 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-12-09 [patent_title] => REFLECTIVE FILTER, MANUFACTURING METHOD THEREOF, AND REFLECTIVE DISPLAY DEVICE [patent_app_type] => utility [patent_app_number] => 16/969642 [patent_app_country] => US [patent_app_date] => 2020-07-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5033 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [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] => 16969642 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/969642
REFLECTIVE FILTER, MANUFACTURING METHOD THEREOF, AND REFLECTIVE DISPLAY DEVICE Jul 9, 2020 Abandoned
Array ( [id] => 17128022 [patent_doc_number] => 20210302791 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-09-30 [patent_title] => LIQUID CRYSTAL DISPLAY PANEL AND MANUFACTURING METHOD THEREOF [patent_app_type] => utility [patent_app_number] => 16/970956 [patent_app_country] => US [patent_app_date] => 2020-07-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7436 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [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] => 16970956 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/970956
Liquid crystal display panel and manufacturing method thereof Jul 9, 2020 Issued
Array ( [id] => 19028491 [patent_doc_number] => 11927846 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-03-12 [patent_title] => Liquid crystal display device and electronic apparatus [patent_app_type] => utility [patent_app_number] => 17/625591 [patent_app_country] => US [patent_app_date] => 2020-07-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 31 [patent_figures_cnt] => 38 [patent_no_of_words] => 20682 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 142 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17625591 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/625591
Liquid crystal display device and electronic apparatus Jun 30, 2020 Issued
Array ( [id] => 17046266 [patent_doc_number] => 11099442 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-08-24 [patent_title] => Display device [patent_app_type] => utility [patent_app_number] => 16/912749 [patent_app_country] => US [patent_app_date] => 2020-06-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 25 [patent_figures_cnt] => 25 [patent_no_of_words] => 20659 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 228 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16912749 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/912749
Display device Jun 25, 2020 Issued
Array ( [id] => 17408470 [patent_doc_number] => 11249349 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-02-15 [patent_title] => Liquid crystal devices [patent_app_type] => utility [patent_app_number] => 16/913143 [patent_app_country] => US [patent_app_date] => 2020-06-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 9 [patent_no_of_words] => 4905 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 232 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16913143 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/913143
Liquid crystal devices Jun 25, 2020 Issued
Array ( [id] => 16957433 [patent_doc_number] => 11061290 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2021-07-13 [patent_title] => Liquid crystal module, spatial light modulator, holographic 3D display device, and driving method [patent_app_type] => utility [patent_app_number] => 16/911978 [patent_app_country] => US [patent_app_date] => 2020-06-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 24 [patent_no_of_words] => 11007 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 148 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16911978 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/911978
Liquid crystal module, spatial light modulator, holographic 3D display device, and driving method Jun 24, 2020 Issued
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