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] => 16825254 [patent_doc_number] => 20210140547 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-05-13 [patent_title] => CARTRIDGE SEAL ASSEMBLY FOR ROTATIONAL EQUIPMENT [patent_app_type] => utility [patent_app_number] => 16/679882 [patent_app_country] => US [patent_app_date] => 2019-11-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5533 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 73 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16679882 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/679882
Cartridge seal assembly for rotational equipment Nov 10, 2019 Issued
Array ( [id] => 17193842 [patent_doc_number] => 11162590 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-11-02 [patent_title] => Sealing ring with a 3D-printed inlay [patent_app_type] => utility [patent_app_number] => 16/675216 [patent_app_country] => US [patent_app_date] => 2019-11-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 22 [patent_no_of_words] => 5816 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 203 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16675216 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/675216
Sealing ring with a 3D-printed inlay Nov 4, 2019 Issued
Array ( [id] => 17650392 [patent_doc_number] => 11353113 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-06-07 [patent_title] => Seal assembly and method of using the same [patent_app_type] => utility [patent_app_number] => 16/671632 [patent_app_country] => US [patent_app_date] => 2019-11-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 15 [patent_no_of_words] => 13139 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 113 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16671632 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/671632
Seal assembly and method of using the same Oct 31, 2019 Issued
Array ( [id] => 18590952 [patent_doc_number] => 11739840 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-08-29 [patent_title] => Piston ring [patent_app_type] => utility [patent_app_number] => 17/291464 [patent_app_country] => US [patent_app_date] => 2019-10-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 5 [patent_no_of_words] => 6965 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 260 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17291464 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/291464
Piston ring Oct 30, 2019 Issued
Array ( [id] => 17697654 [patent_doc_number] => 11371373 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-06-28 [patent_title] => Seal assembly for use in gas turbine engines [patent_app_type] => utility [patent_app_number] => 16/666890 [patent_app_country] => US [patent_app_date] => 2019-10-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 3670 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 151 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16666890 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/666890
Seal assembly for use in gas turbine engines Oct 28, 2019 Issued
Array ( [id] => 18492694 [patent_doc_number] => 11698105 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-07-11 [patent_title] => Surface processing method of disk member of sealing apparatus, and sealing apparatus [patent_app_type] => utility [patent_app_number] => 16/754536 [patent_app_country] => US [patent_app_date] => 2019-10-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 10 [patent_no_of_words] => 11568 [patent_no_of_claims] => 6 [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] => 16754536 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/754536
Surface processing method of disk member of sealing apparatus, and sealing apparatus Oct 23, 2019 Issued
Array ( [id] => 17266994 [patent_doc_number] => 11192400 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-12-07 [patent_title] => Sealing device for a wheel hub unit [patent_app_type] => utility [patent_app_number] => 16/653269 [patent_app_country] => US [patent_app_date] => 2019-10-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 2610 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 181 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16653269 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/653269
Sealing device for a wheel hub unit Oct 14, 2019 Issued
Array ( [id] => 17336987 [patent_doc_number] => 20220003318 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-01-06 [patent_title] => SEAL DEVICE, ELECTRIC MACHINE, AND DRIVE DEVICE [patent_app_type] => utility [patent_app_number] => 17/293210 [patent_app_country] => US [patent_app_date] => 2019-10-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3000 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [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] => 17293210 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/293210
Seal device, electric machine, and drive device Oct 13, 2019 Issued
Array ( [id] => 19594800 [patent_doc_number] => 12152631 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-11-26 [patent_title] => Sliding member [patent_app_type] => utility [patent_app_number] => 17/277282 [patent_app_country] => US [patent_app_date] => 2019-10-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 10245 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 2 [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] => 17277282 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/277282
Sliding member Oct 10, 2019 Issued
Array ( [id] => 16728616 [patent_doc_number] => 20210095763 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-04-01 [patent_title] => CARBON SEAL ASSEMBLY [patent_app_type] => utility [patent_app_number] => 16/589588 [patent_app_country] => US [patent_app_date] => 2019-10-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6217 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 68 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16589588 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/589588
Carbon seal assembly Sep 30, 2019 Issued
Array ( [id] => 15712527 [patent_doc_number] => 20200103029 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-04-02 [patent_title] => SEALING ELEMENT [patent_app_type] => utility [patent_app_number] => 16/587417 [patent_app_country] => US [patent_app_date] => 2019-09-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4515 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [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] => 16587417 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/587417
Sealing element Sep 29, 2019 Issued
Array ( [id] => 17379074 [patent_doc_number] => 11237080 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-02-01 [patent_title] => Mechanical seal with integrated RFID sensor [patent_app_type] => utility [patent_app_number] => 16/585912 [patent_app_country] => US [patent_app_date] => 2019-09-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 3509 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 131 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16585912 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/585912
Mechanical seal with integrated RFID sensor Sep 26, 2019 Issued
Array ( [id] => 15712529 [patent_doc_number] => 20200103030 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-04-02 [patent_title] => GASKET AND SANITARY EQUIPMENT [patent_app_type] => utility [patent_app_number] => 16/584393 [patent_app_country] => US [patent_app_date] => 2019-09-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3063 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [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] => 16584393 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/584393
GASKET AND SANITARY EQUIPMENT Sep 25, 2019 Abandoned
Array ( [id] => 17681399 [patent_doc_number] => 11365640 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-06-21 [patent_title] => Seal assembly with anti-rotation lock [patent_app_type] => utility [patent_app_number] => 16/576206 [patent_app_country] => US [patent_app_date] => 2019-09-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 15 [patent_no_of_words] => 6129 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 108 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16576206 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/576206
Seal assembly with anti-rotation lock Sep 18, 2019 Issued
Array ( [id] => 18545770 [patent_doc_number] => 11719114 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-08-08 [patent_title] => Low friction carbon--carbon seal assembly [patent_app_type] => utility [patent_app_number] => 16/574586 [patent_app_country] => US [patent_app_date] => 2019-09-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 5 [patent_no_of_words] => 2042 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 150 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16574586 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/574586
Low friction carbon--carbon seal assembly Sep 17, 2019 Issued
Array ( [id] => 17222450 [patent_doc_number] => 11174942 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-11-16 [patent_title] => Sealing ring made of a high-performance thermoplastic material and liquid silicone [patent_app_type] => utility [patent_app_number] => 16/568553 [patent_app_country] => US [patent_app_date] => 2019-09-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 5 [patent_no_of_words] => 3351 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 1 [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] => 16568553 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/568553
Sealing ring made of a high-performance thermoplastic material and liquid silicone Sep 11, 2019 Issued
Array ( [id] => 17364092 [patent_doc_number] => 11231110 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-01-25 [patent_title] => Shaft seal having a shaft sealing ring [patent_app_type] => utility [patent_app_number] => 16/562797 [patent_app_country] => US [patent_app_date] => 2019-09-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 4549 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 139 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16562797 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/562797
Shaft seal having a shaft sealing ring Sep 5, 2019 Issued
Array ( [id] => 17967666 [patent_doc_number] => 11485172 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-11-01 [patent_title] => Sealing device for a wheel hub unit [patent_app_type] => utility [patent_app_number] => 16/558786 [patent_app_country] => US [patent_app_date] => 2019-09-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 3 [patent_no_of_words] => 1411 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 187 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16558786 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/558786
Sealing device for a wheel hub unit Sep 2, 2019 Issued
Array ( [id] => 17268174 [patent_doc_number] => 11193593 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-12-07 [patent_title] => Hydrostatic seal [patent_app_type] => utility [patent_app_number] => 16/558900 [patent_app_country] => US [patent_app_date] => 2019-09-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 3244 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 137 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16558900 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/558900
Hydrostatic seal Sep 2, 2019 Issued
Array ( [id] => 17570528 [patent_doc_number] => 11318783 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-05-03 [patent_title] => Sealing device for a wheel hub unit [patent_app_type] => utility [patent_app_number] => 16/558807 [patent_app_country] => US [patent_app_date] => 2019-09-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 1814 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 180 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16558807 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/558807
Sealing device for a wheel hub unit Sep 2, 2019 Issued
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