Search

Audrey Y. Chang

Examiner (ID: 12249, Phone: (571)272-2309 , Office: P/2872 )

Most Active Art Unit
2872
Art Unit(s)
2872, 2507
Total Applications
2296
Issued Applications
1157
Pending Applications
180
Abandoned Applications
969

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 19465747 [patent_doc_number] => 20240319417 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-09-26 [patent_title] => WAVEGUIDE WITH ANTI-REFLECTION PROPERTIES [patent_app_type] => utility [patent_app_number] => 18/574956 [patent_app_country] => US [patent_app_date] => 2022-06-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6473 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -21 [patent_words_short_claim] => 62 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18574956 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/574956
WAVEGUIDE WITH ANTI-REFLECTION PROPERTIES Jun 29, 2022 Pending
Array ( [id] => 19362308 [patent_doc_number] => 20240264342 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-08 [patent_title] => DIFFRACTIVE OPTICS HAVING TRANSVERSELY DISTRIBUTED MULTIPLE FOCI [patent_app_type] => utility [patent_app_number] => 18/572941 [patent_app_country] => US [patent_app_date] => 2022-06-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11096 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -30 [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] => 18572941 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/572941
Diffractive optics having transversely distributed multiple foci Jun 14, 2022 Issued
Array ( [id] => 20033666 [patent_doc_number] => 20250171888 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-05-29 [patent_title] => METHOD FOR PRODUCING AN OPTICAL LAYER SYSTEM, AND AN OPTICAL LAYER SYSTEM PRODUCED THEREWITH [patent_app_type] => utility [patent_app_number] => 18/843019 [patent_app_country] => US [patent_app_date] => 2022-06-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1199 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 81 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18843019 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/843019
METHOD FOR PRODUCING AN OPTICAL LAYER SYSTEM, AND AN OPTICAL LAYER SYSTEM PRODUCED THEREWITH Jun 14, 2022 Pending
Array ( [id] => 17931415 [patent_doc_number] => 20220326540 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-10-13 [patent_title] => Micro-Optic Device [patent_app_type] => utility [patent_app_number] => 17/840330 [patent_app_country] => US [patent_app_date] => 2022-06-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 14553 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 102 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17840330 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/840330
Micro-Optic Device Jun 13, 2022 Pending
Array ( [id] => 17884206 [patent_doc_number] => 20220299683 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-09-22 [patent_title] => DIFFRACTION GRATING ARRAY FOR WIDE-ANGLE ILLUMINATION [patent_app_type] => utility [patent_app_number] => 17/805443 [patent_app_country] => US [patent_app_date] => 2022-06-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 14075 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -26 [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] => 17805443 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/805443
Diffraction grating array for wide-angle illumination Jun 2, 2022 Issued
Array ( [id] => 19779699 [patent_doc_number] => 12228729 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-02-18 [patent_title] => Method for designing diffractive optical element and partitioned uniform light illumination system [patent_app_type] => utility [patent_app_number] => 18/572950 [patent_app_country] => US [patent_app_date] => 2022-05-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 12 [patent_no_of_words] => 7214 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 307 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18572950 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/572950
Method for designing diffractive optical element and partitioned uniform light illumination system May 29, 2022 Issued
Array ( [id] => 20208266 [patent_doc_number] => 20250277986 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-09-04 [patent_title] => OPTICAL IMAGING SYSTEM WITH BUILT-IN OPTICAL FILTER BASED ON SMALL-ANGLE LIGHT PASSING [patent_app_type] => utility [patent_app_number] => 18/859544 [patent_app_country] => US [patent_app_date] => 2022-04-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 0 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 120 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18859544 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/859544
OPTICAL IMAGING SYSTEM WITH BUILT-IN OPTICAL FILTER BASED ON SMALL-ANGLE LIGHT PASSING Apr 25, 2022 Pending
Array ( [id] => 17778196 [patent_doc_number] => 20220244546 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-08-04 [patent_title] => HEAD-MOUNTED DISPLAY EYEBALL TRACKER INTEGRATED SYSTEM [patent_app_type] => utility [patent_app_number] => 17/719564 [patent_app_country] => US [patent_app_date] => 2022-04-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5843 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -4 [patent_words_short_claim] => 112 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17719564 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/719564
HEAD-MOUNTED DISPLAY EYEBALL TRACKER INTEGRATED SYSTEM Apr 12, 2022 Abandoned
Array ( [id] => 18677205 [patent_doc_number] => 20230314846 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-10-05 [patent_title] => CONFIGURABLE MULTIFUNCTIONAL DISPLAY PANEL [patent_app_type] => utility [patent_app_number] => 17/710383 [patent_app_country] => US [patent_app_date] => 2022-03-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 15771 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 85 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17710383 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/710383
CONFIGURABLE MULTIFUNCTIONAL DISPLAY PANEL Mar 30, 2022 Abandoned
Array ( [id] => 18346455 [patent_doc_number] => 20230134565 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-05-04 [patent_title] => DISPLAY APPARATUS PROVIDING EXPANDED EYE BOX [patent_app_type] => utility [patent_app_number] => 17/707430 [patent_app_country] => US [patent_app_date] => 2022-03-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7003 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 90 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17707430 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/707430
Display apparatus providing expanded eye box Mar 28, 2022 Issued
Array ( [id] => 18677079 [patent_doc_number] => 20230314716 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-10-05 [patent_title] => EMISSION OF PARTICULAR WAVELENGTH BANDS UTILIZING DIRECTED WAVELENGTH EMISSION COMPONENTS IN A DISPLAY SYSTEM [patent_app_type] => utility [patent_app_number] => 17/707552 [patent_app_country] => US [patent_app_date] => 2022-03-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13057 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 43 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17707552 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/707552
EMISSION OF PARTICULAR WAVELENGTH BANDS UTILIZING DIRECTED WAVELENGTH EMISSION COMPONENTS IN A DISPLAY SYSTEM Mar 28, 2022 Abandoned
Array ( [id] => 17898601 [patent_doc_number] => 20220308263 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-09-29 [patent_title] => STACKED METALENS SURFACES FOR 3D SENSORs [patent_app_type] => utility [patent_app_number] => 17/655857 [patent_app_country] => US [patent_app_date] => 2022-03-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5163 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 112 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17655857 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/655857
STACKED METALENS SURFACES FOR 3D SENSORs Mar 21, 2022 Pending
Array ( [id] => 19204392 [patent_doc_number] => 20240176291 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-30 [patent_title] => VOLUMETRIC HOLOGRAPHIC DATA STORAGE DEVICES AND VOLUMETRIC HOLOGRAMS [patent_app_type] => utility [patent_app_number] => 18/551815 [patent_app_country] => US [patent_app_date] => 2022-03-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8768 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -23 [patent_words_short_claim] => 10 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18551815 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/551815
VOLUMETRIC HOLOGRAPHIC DATA STORAGE DEVICES AND VOLUMETRIC HOLOGRAMS Mar 21, 2022 Pending
Array ( [id] => 17689607 [patent_doc_number] => 20220196900 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-06-23 [patent_title] => BACKLIGHT UNIT AND HOLOGRAPHIC DISPLAY APPARATUS INCLUDING THE SAME [patent_app_type] => utility [patent_app_number] => 17/693974 [patent_app_country] => US [patent_app_date] => 2022-03-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13470 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [patent_words_short_claim] => 367 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17693974 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/693974
Backlight unit and holographic display apparatus including the same Mar 13, 2022 Issued
Array ( [id] => 17884463 [patent_doc_number] => 20220299940 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-09-22 [patent_title] => Image Projection [patent_app_type] => utility [patent_app_number] => 17/693508 [patent_app_country] => US [patent_app_date] => 2022-03-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 17047 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 123 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17693508 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/693508
Image Projection Mar 13, 2022 Pending
Array ( [id] => 19924257 [patent_doc_number] => 12298537 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-05-13 [patent_title] => Mirror display with increased brightness [patent_app_type] => utility [patent_app_number] => 17/688169 [patent_app_country] => US [patent_app_date] => 2022-03-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 16 [patent_figures_cnt] => 26 [patent_no_of_words] => 9071 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 176 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17688169 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/688169
Mirror display with increased brightness Mar 6, 2022 Issued
Array ( [id] => 18006500 [patent_doc_number] => 20220365266 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-11-17 [patent_title] => APOCHROMATIC LIQUID CRYSTAL POLARIZATION HOLOGRAM DEVICE [patent_app_type] => utility [patent_app_number] => 17/681191 [patent_app_country] => US [patent_app_date] => 2022-02-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 29587 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 117 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17681191 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/681191
APOCHROMATIC LIQUID CRYSTAL POLARIZATION HOLOGRAM DEVICE Feb 24, 2022 Abandoned
Array ( [id] => 17809118 [patent_doc_number] => 20220260953 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-08-18 [patent_title] => APPARATUS FOR GENERATING HOLOGRAM AND A METHOD FOR GENERATING HOLOGRAM USING THE SAME [patent_app_type] => utility [patent_app_number] => 17/674468 [patent_app_country] => US [patent_app_date] => 2022-02-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8318 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 94 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17674468 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/674468
APPARATUS FOR GENERATING HOLOGRAM AND A METHOD FOR GENERATING HOLOGRAM USING THE SAME Feb 16, 2022 Abandoned
Array ( [id] => 19492776 [patent_doc_number] => 12111481 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-10-08 [patent_title] => Lens and optical component [patent_app_type] => utility [patent_app_number] => 17/669923 [patent_app_country] => US [patent_app_date] => 2022-02-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 10 [patent_no_of_words] => 6236 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 200 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17669923 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/669923
Lens and optical component Feb 10, 2022 Issued
Array ( [id] => 20716641 [patent_doc_number] => 12631886 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-05-19 [patent_title] => Transmission grating beam combiner [patent_app_type] => utility [patent_app_number] => 17/650615 [patent_app_country] => US [patent_app_date] => 2022-02-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 8 [patent_no_of_words] => 10527 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 272 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17650615 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/650615
Transmission grating beam combiner Feb 9, 2022 Issued
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