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] => 16956764 [patent_doc_number] => 11060613 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-07-13 [patent_title] => Radial segmented seal with air curtain generator [patent_app_type] => utility [patent_app_number] => 16/193528 [patent_app_country] => US [patent_app_date] => 2018-11-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 15 [patent_figures_cnt] => 15 [patent_no_of_words] => 3986 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 112 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16193528 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/193528
Radial segmented seal with air curtain generator Nov 15, 2018 Issued
Array ( [id] => 15979433 [patent_doc_number] => 10670032 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-06-02 [patent_title] => Sealing structure for casing [patent_app_type] => utility [patent_app_number] => 16/183118 [patent_app_country] => US [patent_app_date] => 2018-11-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 17 [patent_no_of_words] => 7489 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 160 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16183118 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/183118
Sealing structure for casing Nov 6, 2018 Issued
Array ( [id] => 16407826 [patent_doc_number] => 10816373 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2020-10-27 [patent_title] => Friction control and captive sealant for pressed windows [patent_app_type] => utility [patent_app_number] => 16/178851 [patent_app_country] => US [patent_app_date] => 2018-11-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 2305 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 128 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16178851 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/178851
Friction control and captive sealant for pressed windows Nov 1, 2018 Issued
Array ( [id] => 15423261 [patent_doc_number] => 10544548 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-01-28 [patent_title] => Expansion joint seal system with spring centering and ribs with protuberances [patent_app_type] => utility [patent_app_number] => 16/176486 [patent_app_country] => US [patent_app_date] => 2018-10-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 22 [patent_no_of_words] => 18057 [patent_no_of_claims] => 66 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 91 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16176486 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/176486
Expansion joint seal system with spring centering and ribs with protuberances Oct 30, 2018 Issued
Array ( [id] => 15818081 [patent_doc_number] => 10634213 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-04-28 [patent_title] => Sealing structure with damper and oil seal [patent_app_type] => utility [patent_app_number] => 16/171792 [patent_app_country] => US [patent_app_date] => 2018-10-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 11310 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 402 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16171792 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/171792
Sealing structure with damper and oil seal Oct 25, 2018 Issued
Array ( [id] => 17770089 [patent_doc_number] => 11402022 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-08-02 [patent_title] => Mechanical seal having auxiliary lubricating device [patent_app_type] => utility [patent_app_number] => 16/765163 [patent_app_country] => US [patent_app_date] => 2018-10-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 1461 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 239 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16765163 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/765163
Mechanical seal having auxiliary lubricating device Oct 23, 2018 Issued
Array ( [id] => 16448752 [patent_doc_number] => 10840685 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-11-17 [patent_title] => Cable-holding device with sealing assembly [patent_app_type] => utility [patent_app_number] => 16/168225 [patent_app_country] => US [patent_app_date] => 2018-10-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 3536 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 289 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16168225 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/168225
Cable-holding device with sealing assembly Oct 22, 2018 Issued
Array ( [id] => 13931001 [patent_doc_number] => 20190049016 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-02-14 [patent_title] => GASKET FOR CORROSION PREVENTION [patent_app_type] => utility [patent_app_number] => 16/159898 [patent_app_country] => US [patent_app_date] => 2018-10-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4787 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -1 [patent_words_short_claim] => 48 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16159898 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/159898
GASKET FOR CORROSION PREVENTION Oct 14, 2018 Abandoned
Array ( [id] => 19652017 [patent_doc_number] => 12173794 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-12-24 [patent_title] => Sealing arrangement for a connection between two connecting elements of an offshore structure and method for producing same [patent_app_type] => utility [patent_app_number] => 16/755646 [patent_app_country] => US [patent_app_date] => 2018-10-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 10 [patent_no_of_words] => 7008 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 84 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16755646 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/755646
Sealing arrangement for a connection between two connecting elements of an offshore structure and method for producing same Oct 11, 2018 Issued
Array ( [id] => 17697898 [patent_doc_number] => 11371617 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-06-28 [patent_title] => Secondary seal in a non-contact seal assembly [patent_app_type] => utility [patent_app_number] => 17/280600 [patent_app_country] => US [patent_app_date] => 2018-10-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 8 [patent_no_of_words] => 3057 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 311 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17280600 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/280600
Secondary seal in a non-contact seal assembly Oct 8, 2018 Issued
Array ( [id] => 16092349 [patent_doc_number] => 20200200161 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-06-25 [patent_title] => A PISTON ROD SEALING SYSTEM FOR A RECIPROCATING MACHINE AND METHOD FOR SEALING SUCH PISTON ROD [patent_app_type] => utility [patent_app_number] => 16/638971 [patent_app_country] => US [patent_app_date] => 2018-10-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5868 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -32 [patent_words_short_claim] => 163 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16638971 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/638971
Piston rod sealing system for a reciprocating machine and method for sealing such piston rod Oct 2, 2018 Issued
Array ( [id] => 16298627 [patent_doc_number] => 20200284350 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-09-10 [patent_title] => MECHANICAL SEAL FOR SEALING A FLUID-CONDUCTING CHANNEL AND/OR SPACE AND METHOD FOR MONITORING THE WEAR OF A MECHANICAL SEAL [patent_app_type] => utility [patent_app_number] => 16/757379 [patent_app_country] => US [patent_app_date] => 2018-10-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3799 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 142 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16757379 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/757379
Mechanical seal for sealing a fluid-conducting channel and/or space and method for monitoring the wear of a mechanical seal Oct 1, 2018 Issued
Array ( [id] => 13872883 [patent_doc_number] => 20190032782 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-01-31 [patent_title] => Gasket Retainer for Mating an Electrical Device Enclosure [patent_app_type] => utility [patent_app_number] => 16/147924 [patent_app_country] => US [patent_app_date] => 2018-10-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1707 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [patent_words_short_claim] => 169 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16147924 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/147924
Gasket retainer for mating an electrical device enclosure Sep 30, 2018 Issued
Array ( [id] => 17421993 [patent_doc_number] => 11255440 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-02-22 [patent_title] => Gas-lubricated mechanical seal having improved soiling protection [patent_app_type] => utility [patent_app_number] => 16/756322 [patent_app_country] => US [patent_app_date] => 2018-10-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 3368 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 173 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16756322 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/756322
Gas-lubricated mechanical seal having improved soiling protection Sep 30, 2018 Issued
Array ( [id] => 16886330 [patent_doc_number] => 20210172526 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-06-10 [patent_title] => SEAL RING [patent_app_type] => utility [patent_app_number] => 16/761358 [patent_app_country] => US [patent_app_date] => 2018-09-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4797 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -2 [patent_words_short_claim] => 157 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16761358 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/761358
SEAL RING Sep 24, 2018 Abandoned
Array ( [id] => 16520018 [patent_doc_number] => 10871230 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-12-22 [patent_title] => Dynamic sealing device [patent_app_type] => utility [patent_app_number] => 16/136577 [patent_app_country] => US [patent_app_date] => 2018-09-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 8 [patent_no_of_words] => 6538 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 313 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16136577 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/136577
Dynamic sealing device Sep 19, 2018 Issued
Array ( [id] => 17163765 [patent_doc_number] => 11149856 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-10-19 [patent_title] => Dynamic sealing device [patent_app_type] => utility [patent_app_number] => 16/135330 [patent_app_country] => US [patent_app_date] => 2018-09-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 3853 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 196 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16135330 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/135330
Dynamic sealing device Sep 18, 2018 Issued
Array ( [id] => 14082971 [patent_doc_number] => 20190090373 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-03-21 [patent_title] => SEALING STRUCTURE [patent_app_type] => utility [patent_app_number] => 16/131697 [patent_app_country] => US [patent_app_date] => 2018-09-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6224 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [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] => 16131697 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/131697
Sealing structure Sep 13, 2018 Issued
Array ( [id] => 15651535 [patent_doc_number] => 20200088297 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-03-19 [patent_title] => PISTON RING WITH WEAR RESISTANT COATING [patent_app_type] => utility [patent_app_number] => 16/130504 [patent_app_country] => US [patent_app_date] => 2018-09-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1648 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 57 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16130504 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/130504
Piston ring with wear resistant coating Sep 12, 2018 Issued
Array ( [id] => 16650791 [patent_doc_number] => 10927958 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-02-23 [patent_title] => Non-axisymmetric brush seal assembly [patent_app_type] => utility [patent_app_number] => 16/127714 [patent_app_country] => US [patent_app_date] => 2018-09-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 5 [patent_no_of_words] => 3538 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 75 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16127714 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/127714
Non-axisymmetric brush seal assembly Sep 10, 2018 Issued
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