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] => 18222973 [patent_doc_number] => 20230061967 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-03-02 [patent_title] => METHODS AND SYSTEMS FOR MASKLESS LITHOGRAPHY [patent_app_type] => utility [patent_app_number] => 17/793726 [patent_app_country] => US [patent_app_date] => 2020-12-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 17950 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 96 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17793726 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/793726
Methods and systems for maskless lithography Dec 27, 2020 Issued
Array ( [id] => 16765473 [patent_doc_number] => 20210111055 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-04-15 [patent_title] => ALIGNER AND CORRECTION VALUE CALCULATION METHOD FOR ALIGNER [patent_app_type] => utility [patent_app_number] => 17/128199 [patent_app_country] => US [patent_app_date] => 2020-12-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 14584 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 256 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17128199 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/128199
Aligner and correction value calculation method for aligner Dec 20, 2020 Issued
Array ( [id] => 16993635 [patent_doc_number] => 20210232055 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-07-29 [patent_title] => MASK BLANK FOR LITHOGRAPHY AND METHOD OF MANUFACTURING THE SAME [patent_app_type] => utility [patent_app_number] => 17/129841 [patent_app_country] => US [patent_app_date] => 2020-12-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5984 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 17129841 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/129841
Mask blank for lithography and method of manufacturing the same Dec 20, 2020 Issued
Array ( [id] => 19703117 [patent_doc_number] => 12197141 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-01-14 [patent_title] => Suction clamp, object handler, stage apparatus and lithographic apparatus [patent_app_type] => utility [patent_app_number] => 17/792335 [patent_app_country] => US [patent_app_date] => 2020-12-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 17 [patent_no_of_words] => 10988 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 144 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17792335 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/792335
Suction clamp, object handler, stage apparatus and lithographic apparatus Dec 17, 2020 Issued
Array ( [id] => 16729322 [patent_doc_number] => 20210096469 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-04-01 [patent_title] => RETICLE-MASKING STRUCTURE, EXTREME ULTRAVIOLET APPARATUS, AND METHOD OF FORMING THE SAME [patent_app_type] => utility [patent_app_number] => 17/121588 [patent_app_country] => US [patent_app_date] => 2020-12-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7638 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 42 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17121588 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/121588
Reticle-masking structure, extreme ultraviolet apparatus, and method of forming the same Dec 13, 2020 Issued
Array ( [id] => 17157569 [patent_doc_number] => 20210318620 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-10-14 [patent_title] => SYSTEMS AND METHODS FOR OPTIMIZATION OF PARAMETERS FOR EXPOSING FLEXOGRAPHIC PHOTOPOLYMER PLATES [patent_app_type] => utility [patent_app_number] => 17/114642 [patent_app_country] => US [patent_app_date] => 2020-12-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7172 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -30 [patent_words_short_claim] => 96 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17114642 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/114642
SYSTEMS AND METHODS FOR OPTIMIZATION OF PARAMETERS FOR EXPOSING FLEXOGRAPHIC PHOTOPOLYMER PLATES Dec 7, 2020 Pending
Array ( [id] => 18164846 [patent_doc_number] => 20230031443 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-02-02 [patent_title] => WAFER CLAMP HARD BURL PRODUCTION AND REFURBISHMENT [patent_app_type] => utility [patent_app_number] => 17/788806 [patent_app_country] => US [patent_app_date] => 2020-12-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10927 [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] => 17788806 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/788806
WAFER CLAMP HARD BURL PRODUCTION AND REFURBISHMENT Dec 7, 2020 Abandoned
Array ( [id] => 19292947 [patent_doc_number] => 12032299 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-07-09 [patent_title] => Metrology method and associated metrology and lithographic apparatuses [patent_app_type] => utility [patent_app_number] => 17/784566 [patent_app_country] => US [patent_app_date] => 2020-12-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 7 [patent_no_of_words] => 11113 [patent_no_of_claims] => 25 [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] => 17784566 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/784566
Metrology method and associated metrology and lithographic apparatuses Dec 2, 2020 Issued
Array ( [id] => 17172117 [patent_doc_number] => 20210325787 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-10-21 [patent_title] => EXPOSURE APPARATUS AND METHOD OF MANUFACTURING DISPLAY DEVICE USING THE SAME [patent_app_type] => utility [patent_app_number] => 16/952953 [patent_app_country] => US [patent_app_date] => 2020-11-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8784 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 74 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16952953 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/952953
EXPOSURE APPARATUS AND METHOD OF MANUFACTURING DISPLAY DEVICE USING THE SAME Nov 18, 2020 Abandoned
Array ( [id] => 17172122 [patent_doc_number] => 20210325792 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-10-21 [patent_title] => ALIGNMENT STRUCTURE [patent_app_type] => utility [patent_app_number] => 17/086464 [patent_app_country] => US [patent_app_date] => 2020-11-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2690 [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] => 17086464 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/086464
Alignment structure Nov 1, 2020 Issued
Array ( [id] => 17179683 [patent_doc_number] => 11156922 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-10-26 [patent_title] => Method and device for determining the heating state of a mirror in an optical system [patent_app_type] => utility [patent_app_number] => 17/081255 [patent_app_country] => US [patent_app_date] => 2020-10-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 3859 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 189 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17081255 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/081255
Method and device for determining the heating state of a mirror in an optical system Oct 26, 2020 Issued
Array ( [id] => 18066746 [patent_doc_number] => 20220397834 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-12-15 [patent_title] => MEASURING METHOD AND MEASURING APPARATUS [patent_app_type] => utility [patent_app_number] => 17/774743 [patent_app_country] => US [patent_app_date] => 2020-10-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 16154 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [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] => 17774743 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/774743
Measuring method and measuring apparatus Oct 19, 2020 Issued
Array ( [id] => 18066746 [patent_doc_number] => 20220397834 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-12-15 [patent_title] => MEASURING METHOD AND MEASURING APPARATUS [patent_app_type] => utility [patent_app_number] => 17/774743 [patent_app_country] => US [patent_app_date] => 2020-10-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 16154 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [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] => 17774743 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/774743
Measuring method and measuring apparatus Oct 19, 2020 Issued
Array ( [id] => 19794650 [patent_doc_number] => 12235595 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-02-25 [patent_title] => Systems for cleaning a portion of a lithography apparatus [patent_app_type] => utility [patent_app_number] => 17/771044 [patent_app_country] => US [patent_app_date] => 2020-10-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 16 [patent_figures_cnt] => 17 [patent_no_of_words] => 18218 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 1 [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] => 17771044 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/771044
Systems for cleaning a portion of a lithography apparatus Oct 19, 2020 Issued
Array ( [id] => 18040814 [patent_doc_number] => 20220385031 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-12-01 [patent_title] => CONTROLLING A SPECTRAL PROPERTY OF AN OUTPUT LIGHT BEAM PRODUCED BY AN OPTICAL SOURCE [patent_app_type] => utility [patent_app_number] => 17/770344 [patent_app_country] => US [patent_app_date] => 2020-10-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13423 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -23 [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] => 17770344 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/770344
CONTROLLING A SPECTRAL PROPERTY OF AN OUTPUT LIGHT BEAM PRODUCED BY AN OPTICAL SOURCE Oct 15, 2020 Pending
Array ( [id] => 18040814 [patent_doc_number] => 20220385031 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-12-01 [patent_title] => CONTROLLING A SPECTRAL PROPERTY OF AN OUTPUT LIGHT BEAM PRODUCED BY AN OPTICAL SOURCE [patent_app_type] => utility [patent_app_number] => 17/770344 [patent_app_country] => US [patent_app_date] => 2020-10-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13423 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -23 [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] => 17770344 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/770344
CONTROLLING A SPECTRAL PROPERTY OF AN OUTPUT LIGHT BEAM PRODUCED BY AN OPTICAL SOURCE Oct 15, 2020 Pending
Array ( [id] => 17557470 [patent_doc_number] => 11314170 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-04-26 [patent_title] => System and process for direct curing of photopolymer printing plates [patent_app_type] => utility [patent_app_number] => 17/066698 [patent_app_country] => US [patent_app_date] => 2020-10-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 7 [patent_no_of_words] => 5839 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 169 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17066698 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/066698
System and process for direct curing of photopolymer printing plates Oct 8, 2020 Issued
Array ( [id] => 18037908 [patent_doc_number] => 20220382124 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-12-01 [patent_title] => AN ILLUMINATION SOURCE AND ASSOCIATED METROLOGY APPARATUS [patent_app_type] => utility [patent_app_number] => 17/769725 [patent_app_country] => US [patent_app_date] => 2020-10-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 16679 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [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] => 17769725 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/769725
Illumination source and associated metrology apparatus Oct 6, 2020 Issued
Array ( [id] => 18122864 [patent_doc_number] => 20230008474 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-01-12 [patent_title] => LITHOGRAPHIC APPARATUS AND ELECTROSTATIC CLAMP DESIGNS [patent_app_type] => utility [patent_app_number] => 17/773004 [patent_app_country] => US [patent_app_date] => 2020-10-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9034 [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] => 17773004 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/773004
Lithographic apparatus and electrostatic clamp designs Oct 4, 2020 Issued
Array ( [id] => 17698616 [patent_doc_number] => 11372337 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-06-28 [patent_title] => Method of performing model-based scanner tuning [patent_app_type] => utility [patent_app_number] => 17/062251 [patent_app_country] => US [patent_app_date] => 2020-10-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 10 [patent_no_of_words] => 8577 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 124 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17062251 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/062251
Method of performing model-based scanner tuning Oct 1, 2020 Issued
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