Search

Kai J. Chang

Examiner (ID: 16715, Phone: (571)270-5448 , Office: P/2468 )

Most Active Art Unit
2468
Art Unit(s)
2468
Total Applications
459
Issued Applications
326
Pending Applications
38
Abandoned Applications
108

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 16469911 [patent_doc_number] => 20200371448 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-11-26 [patent_title] => METHOD FOR MASK AND SUBSTRATE ALIGNMENT [patent_app_type] => utility [patent_app_number] => 16/807860 [patent_app_country] => US [patent_app_date] => 2020-03-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 12180 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 65 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16807860 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/807860
Method for mask and substrate alignment Mar 2, 2020 Issued
Array ( [id] => 16094403 [patent_doc_number] => 20200201188 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-06-25 [patent_title] => IMAGE EXPOSURE DEVICE [patent_app_type] => utility [patent_app_number] => 16/807364 [patent_app_country] => US [patent_app_date] => 2020-03-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9092 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [patent_words_short_claim] => 100 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16807364 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/807364
Image exposure device Mar 2, 2020 Issued
Array ( [id] => 16682985 [patent_doc_number] => 10942459 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-03-09 [patent_title] => Lithography system and cleaning method thereof [patent_app_type] => utility [patent_app_number] => 16/805857 [patent_app_country] => US [patent_app_date] => 2020-03-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 9 [patent_no_of_words] => 7482 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 95 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16805857 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/805857
Lithography system and cleaning method thereof Mar 1, 2020 Issued
Array ( [id] => 16787597 [patent_doc_number] => 10990023 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2021-04-27 [patent_title] => Method and apparatus for diffraction-based overlay measurement [patent_app_type] => utility [patent_app_number] => 16/803981 [patent_app_country] => US [patent_app_date] => 2020-02-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 15 [patent_figures_cnt] => 21 [patent_no_of_words] => 12744 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 161 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16803981 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/803981
Method and apparatus for diffraction-based overlay measurement Feb 26, 2020 Issued
Array ( [id] => 20303740 [patent_doc_number] => 12449726 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-10-21 [patent_title] => Apparatus for assembly of a reticle assembly [patent_app_type] => utility [patent_app_number] => 17/433038 [patent_app_country] => US [patent_app_date] => 2020-02-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 30 [patent_figures_cnt] => 37 [patent_no_of_words] => 27640 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [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] => 17433038 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/433038
Apparatus for assembly of a reticle assembly Feb 24, 2020 Issued
Array ( [id] => 16926695 [patent_doc_number] => 11048171 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-06-29 [patent_title] => Conveying type washing device [patent_app_type] => utility [patent_app_number] => 16/801120 [patent_app_country] => US [patent_app_date] => 2020-02-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 7 [patent_no_of_words] => 9305 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 136 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16801120 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/801120
Conveying type washing device Feb 24, 2020 Issued
Array ( [id] => 16666266 [patent_doc_number] => 10935504 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2021-03-02 [patent_title] => Equipment inspection apparatus [patent_app_type] => utility [patent_app_number] => 16/798564 [patent_app_country] => US [patent_app_date] => 2020-02-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 5 [patent_no_of_words] => 2809 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 211 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16798564 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/798564
Equipment inspection apparatus Feb 23, 2020 Issued
Array ( [id] => 16565174 [patent_doc_number] => 10890539 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2021-01-12 [patent_title] => Semiconductor defect inspection apparatus [patent_app_type] => utility [patent_app_number] => 16/798990 [patent_app_country] => US [patent_app_date] => 2020-02-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 10 [patent_no_of_words] => 5326 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 122 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16798990 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/798990
Semiconductor defect inspection apparatus Feb 23, 2020 Issued
Array ( [id] => 16054675 [patent_doc_number] => 20200189192 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-06-18 [patent_title] => MODEL-BASED SCANNER TUNING SYSTEMS AND METHODS [patent_app_type] => utility [patent_app_number] => 16/797012 [patent_app_country] => US [patent_app_date] => 2020-02-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 12108 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [patent_words_short_claim] => 132 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16797012 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/797012
MODEL-BASED SCANNER TUNING SYSTEMS AND METHODS Feb 20, 2020 Abandoned
Array ( [id] => 17491813 [patent_doc_number] => 11281112 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-03-22 [patent_title] => Method of measuring misregistration in the manufacture of topographic semiconductor device wafers [patent_app_type] => utility [patent_app_number] => 16/647092 [patent_app_country] => US [patent_app_date] => 2020-02-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 8878 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 166 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16647092 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/647092
Method of measuring misregistration in the manufacture of topographic semiconductor device wafers Feb 13, 2020 Issued
Array ( [id] => 16666643 [patent_doc_number] => 10935885 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2021-03-02 [patent_title] => System and method for cleaning mesa sidewalls [patent_app_type] => utility [patent_app_number] => 16/787626 [patent_app_country] => US [patent_app_date] => 2020-02-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 20 [patent_figures_cnt] => 35 [patent_no_of_words] => 9503 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 76 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16787626 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/787626
System and method for cleaning mesa sidewalls Feb 10, 2020 Issued
Array ( [id] => 16479530 [patent_doc_number] => 10854484 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2020-12-01 [patent_title] => Method and system for managing liquid supply [patent_app_type] => utility [patent_app_number] => 16/788065 [patent_app_country] => US [patent_app_date] => 2020-02-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 2224 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 2 [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] => 16788065 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/788065
Method and system for managing liquid supply Feb 10, 2020 Issued
Array ( [id] => 19413124 [patent_doc_number] => 12078938 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-09-03 [patent_title] => Method and apparatus for predicting aberrations in a projection system [patent_app_type] => utility [patent_app_number] => 17/438314 [patent_app_country] => US [patent_app_date] => 2020-02-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 16 [patent_no_of_words] => 7693 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 87 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17438314 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/438314
Method and apparatus for predicting aberrations in a projection system Feb 9, 2020 Issued
Array ( [id] => 15997005 [patent_doc_number] => 20200174373 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-06-04 [patent_title] => EXPOSURE APPARATUS, MANUFACTURING METHOD OF FLAT-PANEL DISPLAY, DEVICE MANUFACTURING METHOD, AND EXPOSURE METHOD [patent_app_type] => utility [patent_app_number] => 16/781370 [patent_app_country] => US [patent_app_date] => 2020-02-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 15031 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [patent_words_short_claim] => 116 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16781370 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/781370
Exposure apparatus, manufacturing method of flat-panel display, device manufacturing method, and exposure method Feb 3, 2020 Issued
Array ( [id] => 16431036 [patent_doc_number] => 10831115 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2020-11-10 [patent_title] => Reticle management method and semiconductor device fabrication method including the same [patent_app_type] => utility [patent_app_number] => 16/774543 [patent_app_country] => US [patent_app_date] => 2020-01-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 11 [patent_no_of_words] => 5121 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 60 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16774543 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/774543
Reticle management method and semiconductor device fabrication method including the same Jan 27, 2020 Issued
Array ( [id] => 19212091 [patent_doc_number] => 12001149 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-06-04 [patent_title] => Component for use in a lithographic apparatus, method of protecting a component and method of protecting tables in a lithographic apparatus [patent_app_type] => utility [patent_app_number] => 17/428897 [patent_app_country] => US [patent_app_date] => 2020-01-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 5437 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 2 [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] => 17428897 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/428897
Component for use in a lithographic apparatus, method of protecting a component and method of protecting tables in a lithographic apparatus Jan 23, 2020 Issued
Array ( [id] => 17379473 [patent_doc_number] => 11237485 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-02-01 [patent_title] => System, software application, and method for lithography stitching [patent_app_type] => utility [patent_app_number] => 16/748202 [patent_app_country] => US [patent_app_date] => 2020-01-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 13 [patent_no_of_words] => 5697 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 238 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16748202 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/748202
System, software application, and method for lithography stitching Jan 20, 2020 Issued
Array ( [id] => 16690173 [patent_doc_number] => 20210072650 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-03-11 [patent_title] => Imaging Overlay Targets Using Moire Elements and Rotational Symmetry Arrangements [patent_app_type] => utility [patent_app_number] => 16/743124 [patent_app_country] => US [patent_app_date] => 2020-01-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13131 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -57 [patent_words_short_claim] => 148 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16743124 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/743124
Imaging overlay targets using Moire elements and rotational symmetry arrangements Jan 14, 2020 Issued
Array ( [id] => 17331102 [patent_doc_number] => 11221561 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-01-11 [patent_title] => System and method for wafer-by-wafer overlay feedforward and lot-to-lot feedback control [patent_app_type] => utility [patent_app_number] => 16/742209 [patent_app_country] => US [patent_app_date] => 2020-01-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 10 [patent_no_of_words] => 12469 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 186 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16742209 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/742209
System and method for wafer-by-wafer overlay feedforward and lot-to-lot feedback control Jan 13, 2020 Issued
Array ( [id] => 16592063 [patent_doc_number] => 10901319 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-01-26 [patent_title] => Apparatus for forming an ophthalmic lens [patent_app_type] => utility [patent_app_number] => 16/740607 [patent_app_country] => US [patent_app_date] => 2020-01-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 19 [patent_figures_cnt] => 19 [patent_no_of_words] => 24439 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 241 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16740607 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/740607
Apparatus for forming an ophthalmic lens Jan 12, 2020 Issued
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