Search

Yean Hsi Chang

Examiner (ID: 16947)

Most Active Art Unit
2835
Art Unit(s)
2835
Total Applications
607
Issued Applications
482
Pending Applications
15
Abandoned Applications
110

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 17968977 [patent_doc_number] => 11486496 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-11-01 [patent_title] => Spoked rotary seal [patent_app_type] => utility [patent_app_number] => 17/137888 [patent_app_country] => US [patent_app_date] => 2020-12-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 14 [patent_no_of_words] => 3673 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 114 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17137888 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/137888
Spoked rotary seal Dec 29, 2020 Issued
Array ( [id] => 19856251 [patent_doc_number] => 12259077 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-03-25 [patent_title] => Device for a sealed passage of longitudinal elements through a partition [patent_app_type] => utility [patent_app_number] => 17/790387 [patent_app_country] => US [patent_app_date] => 2020-12-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 7 [patent_no_of_words] => 4433 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 190 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17790387 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/790387
Device for a sealed passage of longitudinal elements through a partition Dec 29, 2020 Issued
Array ( [id] => 16763144 [patent_doc_number] => 20210108725 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-04-15 [patent_title] => ELASTOMERIC GEL BODY GASKET HAVING A SUBSTANTIALLY INCOMPRESSIBLE SKELETON, A METHOD OF MAKING AND USING THE SAME [patent_app_type] => utility [patent_app_number] => 17/247641 [patent_app_country] => US [patent_app_date] => 2020-12-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7285 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 140 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17247641 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/247641
Elastomeric gel body gasket having a substantially incompressible skeleton, a method of making and using the same Dec 17, 2020 Issued
Array ( [id] => 18238237 [patent_doc_number] => 20230070548 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-03-09 [patent_title] => Sealant Having Fireworthy Properties for Use With Aircraft Parts [patent_app_type] => utility [patent_app_number] => 17/247599 [patent_app_country] => US [patent_app_date] => 2020-12-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8528 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 131 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17247599 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/247599
Sealant having fireworthy properties for use with aircraft parts Dec 16, 2020 Issued
Array ( [id] => 16933308 [patent_doc_number] => 20210199197 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-07-01 [patent_title] => DYNAMIC SEAL [patent_app_type] => utility [patent_app_number] => 17/121855 [patent_app_country] => US [patent_app_date] => 2020-12-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 12256 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [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] => 17121855 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/121855
Dynamic seal Dec 14, 2020 Issued
Array ( [id] => 19731675 [patent_doc_number] => 12209666 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-01-28 [patent_title] => Sealing elements with integrated intrinsic energizers [patent_app_type] => utility [patent_app_number] => 17/637114 [patent_app_country] => US [patent_app_date] => 2020-12-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 6 [patent_no_of_words] => 4212 [patent_no_of_claims] => 18 [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] => 17637114 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/637114
Sealing elements with integrated intrinsic energizers Dec 7, 2020 Issued
Array ( [id] => 19044314 [patent_doc_number] => 11933407 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-03-19 [patent_title] => Compression ring [patent_app_type] => utility [patent_app_number] => 17/784434 [patent_app_country] => US [patent_app_date] => 2020-12-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 7 [patent_no_of_words] => 6049 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 153 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17784434 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/784434
Compression ring Dec 2, 2020 Issued
Array ( [id] => 18078322 [patent_doc_number] => 20220403934 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-12-22 [patent_title] => SEAL WITH DIFFERENT COMPRESSIONS [patent_app_type] => utility [patent_app_number] => 17/776632 [patent_app_country] => US [patent_app_date] => 2020-11-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2120 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 93 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17776632 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/776632
Seal with different compressions Nov 23, 2020 Issued
Array ( [id] => 17785396 [patent_doc_number] => 11408511 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-08-09 [patent_title] => Circumferential seal assembly [patent_app_type] => utility [patent_app_number] => 17/100635 [patent_app_country] => US [patent_app_date] => 2020-11-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 10 [patent_no_of_words] => 2197 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 267 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17100635 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/100635
Circumferential seal assembly Nov 19, 2020 Issued
Array ( [id] => 16855727 [patent_doc_number] => 20210156472 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-05-27 [patent_title] => BELLOWS SEAL ASSEMBLY [patent_app_type] => utility [patent_app_number] => 17/100678 [patent_app_country] => US [patent_app_date] => 2020-11-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2215 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 107 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17100678 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/100678
Bellows seal assembly Nov 19, 2020 Issued
Array ( [id] => 17483177 [patent_doc_number] => 20220090681 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-03-24 [patent_title] => MECHANISM FOR SEALING CYLINDER AND CYLINDER HEAD [patent_app_type] => utility [patent_app_number] => 17/099595 [patent_app_country] => US [patent_app_date] => 2020-11-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1485 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [patent_words_short_claim] => 118 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17099595 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/099595
MECHANISM FOR SEALING CYLINDER AND CYLINDER HEAD Nov 15, 2020 Abandoned
Array ( [id] => 16847725 [patent_doc_number] => 20210148470 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-05-20 [patent_title] => HYDRAULIC SEAL [patent_app_type] => utility [patent_app_number] => 17/097832 [patent_app_country] => US [patent_app_date] => 2020-11-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3651 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 125 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17097832 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/097832
Hydraulic seal Nov 12, 2020 Issued
Array ( [id] => 16847724 [patent_doc_number] => 20210148469 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-05-20 [patent_title] => Rotary Joint Shroud Having Set-Up Gauge and Seal Wear Indicator [patent_app_type] => utility [patent_app_number] => 17/089235 [patent_app_country] => US [patent_app_date] => 2020-11-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5359 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 17089235 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/089235
Rotary joint shroud having set-up gauge and seal wear indicator Nov 3, 2020 Issued
Array ( [id] => 18261198 [patent_doc_number] => 11608895 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-03-21 [patent_title] => Dispensing seal [patent_app_type] => utility [patent_app_number] => 17/083729 [patent_app_country] => US [patent_app_date] => 2020-10-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 9 [patent_no_of_words] => 3626 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 111 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17083729 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/083729
Dispensing seal Oct 28, 2020 Issued
Array ( [id] => 17922994 [patent_doc_number] => 11466228 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2022-10-11 [patent_title] => Friction control and captive sealant for pressed windows [patent_app_type] => utility [patent_app_number] => 17/078370 [patent_app_country] => US [patent_app_date] => 2020-10-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 2550 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 127 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17078370 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/078370
Friction control and captive sealant for pressed windows Oct 22, 2020 Issued
Array ( [id] => 18078323 [patent_doc_number] => 20220403935 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-12-22 [patent_title] => SEAL ASSEMBLY AND SEAL ELEMENT [patent_app_type] => utility [patent_app_number] => 17/777628 [patent_app_country] => US [patent_app_date] => 2020-10-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3570 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 106 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17777628 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/777628
SEAL ASSEMBLY AND SEAL ELEMENT Oct 18, 2020 Abandoned
Array ( [id] => 16855734 [patent_doc_number] => 20210156479 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-05-27 [patent_title] => DEPLOYABLE PRESSURE ENERGIZED SEALING BACKUP SYSTEMS FOR IMPROVED LONG TERM RELIABILITY [patent_app_type] => utility [patent_app_number] => 17/070156 [patent_app_country] => US [patent_app_date] => 2020-10-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4039 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -24 [patent_words_short_claim] => 56 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17070156 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/070156
Deployable pressure energized sealing backup systems for improved long term reliability Oct 13, 2020 Issued
Array ( [id] => 18838288 [patent_doc_number] => 11846353 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-12-19 [patent_title] => Gasket ring and flange connection using such gasket ring [patent_app_type] => utility [patent_app_number] => 17/641724 [patent_app_country] => US [patent_app_date] => 2020-09-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 2170 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 170 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17641724 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/641724
Gasket ring and flange connection using such gasket ring Sep 27, 2020 Issued
Array ( [id] => 16728618 [patent_doc_number] => 20210095765 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-04-01 [patent_title] => HYDRAULIC MOTOR SHAFT SEAL ASSEMBLY [patent_app_type] => utility [patent_app_number] => 17/032088 [patent_app_country] => US [patent_app_date] => 2020-09-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3841 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 133 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17032088 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/032088
HYDRAULIC MOTOR SHAFT SEAL ASSEMBLY Sep 24, 2020 Abandoned
Array ( [id] => 19227396 [patent_doc_number] => 12007030 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-06-11 [patent_title] => Two position medical handpiece seal [patent_app_type] => utility [patent_app_number] => 17/026366 [patent_app_country] => US [patent_app_date] => 2020-09-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 11 [patent_no_of_words] => 4973 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [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] => 17026366 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/026366
Two position medical handpiece seal Sep 20, 2020 Issued
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