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] => 19052619 [patent_doc_number] => 20240094588 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-03-21 [patent_title] => METHOD FOR PRODUCING AN ELECTROCHROMIC DEVICE, ELECTROCHROMIC DEVICE, AND INSULATING GLAZING [patent_app_type] => utility [patent_app_number] => 18/264204 [patent_app_country] => US [patent_app_date] => 2022-01-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2965 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 92 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18264204 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/264204
METHOD FOR PRODUCING AN ELECTROCHROMIC DEVICE, ELECTROCHROMIC DEVICE, AND INSULATING GLAZING Jan 24, 2022 Abandoned
Array ( [id] => 17597146 [patent_doc_number] => 20220146720 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-05-12 [patent_title] => DISPLAY DEVICES INCLUDING MIRROR SUBSTRATES AND METHODS OF MANUFACTURING MIRROR SUBSTRATES [patent_app_type] => utility [patent_app_number] => 17/648770 [patent_app_country] => US [patent_app_date] => 2022-01-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6794 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [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] => 17648770 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/648770
Display devices including mirror substrates and methods of manufacturing mirror substrates Jan 23, 2022 Issued
Array ( [id] => 19587900 [patent_doc_number] => 20240385457 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-11-21 [patent_title] => EYE MOVEMENT TRACKING DEVICE AND EYE MOVEMENT TRACKING METHOD [patent_app_type] => utility [patent_app_number] => 18/027108 [patent_app_country] => US [patent_app_date] => 2022-01-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5953 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 202 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18027108 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/027108
Eye movement tracking device and eye movement tracking method Jan 9, 2022 Issued
Array ( [id] => 17549723 [patent_doc_number] => 20220121065 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-04-21 [patent_title] => DISPLAY DEVICE [patent_app_type] => utility [patent_app_number] => 17/567160 [patent_app_country] => US [patent_app_date] => 2022-01-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5450 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -7 [patent_words_short_claim] => 137 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17567160 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/567160
Display device capable of generating color of light close to or identical to blue primary color of DCI-P3 color gamut Jan 2, 2022 Issued
Array ( [id] => 19764320 [patent_doc_number] => 12222609 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-02-11 [patent_title] => Display panel and display device [patent_app_type] => utility [patent_app_number] => 18/017528 [patent_app_country] => US [patent_app_date] => 2021-12-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 9 [patent_no_of_words] => 7564 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 315 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18017528 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/017528
Display panel and display device Dec 29, 2021 Issued
Array ( [id] => 19021607 [patent_doc_number] => 20240077778 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-03-07 [patent_title] => DEVICE INCLUDING FERROELECTRIC NEMATIC LIQUID CRYSTAL-FORMING MOLECULES AND METHODS OF FORMING AND USING SAME [patent_app_type] => utility [patent_app_number] => 18/270637 [patent_app_country] => US [patent_app_date] => 2021-12-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10834 [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] => 18270637 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/270637
Device including ferroelectric nematic liquid crystal-forming molecules and methods of forming and using same Dec 29, 2021 Issued
Array ( [id] => 18989344 [patent_doc_number] => 20240061313 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-22 [patent_title] => EXTENDED DEPTH RANGE LIGHT FIELD DISPLAY [patent_app_type] => utility [patent_app_number] => 18/259521 [patent_app_country] => US [patent_app_date] => 2021-12-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5923 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 68 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18259521 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/259521
EXTENDED DEPTH RANGE LIGHT FIELD DISPLAY Dec 27, 2021 Abandoned
Array ( [id] => 17549704 [patent_doc_number] => 20220121046 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-04-21 [patent_title] => VARIABLE-FOCUS VIRTUAL IMAGE DEVICES BASED ON POLARIZATION CONVERSION [patent_app_type] => utility [patent_app_number] => 17/646094 [patent_app_country] => US [patent_app_date] => 2021-12-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 38957 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 144 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17646094 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/646094
Variable-focus virtual image devices based on polarization conversion Dec 26, 2021 Issued
Array ( [id] => 19506278 [patent_doc_number] => 12117695 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-10-15 [patent_title] => Liquid crystal lens panel and display device [patent_app_type] => utility [patent_app_number] => 18/273557 [patent_app_country] => US [patent_app_date] => 2021-12-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 13 [patent_no_of_words] => 10526 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 424 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18273557 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/273557
Liquid crystal lens panel and display device Dec 26, 2021 Issued
Array ( [id] => 18826295 [patent_doc_number] => 11841569 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-12-12 [patent_title] => Splicing display device [patent_app_type] => utility [patent_app_number] => 17/597229 [patent_app_country] => US [patent_app_date] => 2021-12-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 10 [patent_no_of_words] => 4701 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 191 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17597229 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/597229
Splicing display device Dec 20, 2021 Issued
Array ( [id] => 18437829 [patent_doc_number] => 20230185124 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-06-15 [patent_title] => DISPLAY PANEL AND DISPLAY DEVICE [patent_app_type] => utility [patent_app_number] => 17/623898 [patent_app_country] => US [patent_app_date] => 2021-12-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4689 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 156 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17623898 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/623898
Display panel and display device Dec 14, 2021 Issued
Array ( [id] => 18846337 [patent_doc_number] => 20230408741 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-12-21 [patent_title] => OPTICAL ANGULAR FILTER [patent_app_type] => utility [patent_app_number] => 18/267053 [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] => 4597 [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] => 18267053 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/267053
OPTICAL ANGULAR FILTER Dec 12, 2021 Abandoned
Array ( [id] => 17740030 [patent_doc_number] => 20220225492 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-07-14 [patent_title] => Electronic Devices With Folding Displays Having Textured Flexible Areas [patent_app_type] => utility [patent_app_number] => 17/542129 [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] => 5633 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 17542129 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/542129
Electronic devices with folding displays having textured flexible areas Dec 2, 2021 Issued
Array ( [id] => 18465960 [patent_doc_number] => 11690272 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-06-27 [patent_title] => Display panel and display device [patent_app_type] => utility [patent_app_number] => 17/539095 [patent_app_country] => US [patent_app_date] => 2021-11-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 19 [patent_no_of_words] => 10007 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 234 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17539095 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/539095
Display panel and display device Nov 29, 2021 Issued
Array ( [id] => 19498874 [patent_doc_number] => 20240337892 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-10-10 [patent_title] => LIQUID CRYSTAL LENS COMPONENT AND DRIVING METHOD THEREFOR, AND DISPLAY DEVICE [patent_app_type] => utility [patent_app_number] => 18/579363 [patent_app_country] => US [patent_app_date] => 2021-11-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10200 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 279 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18579363 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/579363
Liquid crystal lens component and driving method therefor, and display device Nov 28, 2021 Issued
Array ( [id] => 19266898 [patent_doc_number] => 20240210599 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-06-27 [patent_title] => DEVICE AND METHOD FOR ELIMINATING STRAY LIGHT OF FRESNEL LENS, AND OPTICAL APPARATUS [patent_app_type] => utility [patent_app_number] => 17/913272 [patent_app_country] => US [patent_app_date] => 2021-11-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6568 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 111 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17913272 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/913272
Device and method for eliminating stray light of Fresnel lens, and optical apparatus Nov 22, 2021 Issued
Array ( [id] => 18941101 [patent_doc_number] => 20240036240 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-01 [patent_title] => OPTICAL ANGULAR FILTER [patent_app_type] => utility [patent_app_number] => 18/266529 [patent_app_country] => US [patent_app_date] => 2021-11-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5594 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 71 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18266529 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/266529
OPTICAL ANGULAR FILTER Nov 21, 2021 Pending
Array ( [id] => 19136672 [patent_doc_number] => 11971620 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-04-30 [patent_title] => Display panel and electronic device [patent_app_type] => utility [patent_app_number] => 17/907986 [patent_app_country] => US [patent_app_date] => 2021-11-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 8 [patent_no_of_words] => 12201 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 1028 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17907986 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/907986
Display panel and electronic device Nov 21, 2021 Issued
Array ( [id] => 18377561 [patent_doc_number] => 20230152648 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-05-18 [patent_title] => Switchable Transparent Display with Laminated Switching Panel [patent_app_type] => utility [patent_app_number] => 17/526577 [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] => 3724 [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] => 17526577 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/526577
Switchable Transparent Display with Laminated Switching Panel Nov 14, 2021 Abandoned
Array ( [id] => 18872684 [patent_doc_number] => 11860485 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-01-02 [patent_title] => Liquid-crystal display device and electronic apparatus [patent_app_type] => utility [patent_app_number] => 17/515854 [patent_app_country] => US [patent_app_date] => 2021-11-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 29 [patent_figures_cnt] => 47 [patent_no_of_words] => 20319 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 174 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17515854 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/515854
Liquid-crystal display device and electronic apparatus Oct 31, 2021 Issued
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