
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 number | Title of the application | Filing Date | Status |
|---|---|---|---|
Array
(
[id] => 18188253
[patent_doc_number] => 11578825
[patent_country] => US
[patent_kind] => B2
[patent_issue_date] => 2023-02-14
[patent_title] => Pipe joint seal for polymer piping
[patent_app_type] => utility
[patent_app_number] => 16/854238
[patent_app_country] => US
[patent_app_date] => 2020-04-21
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[rel_patent_id] =>[rel_patent_doc_number] =>) 16/854238 | Pipe joint seal for polymer piping | Apr 20, 2020 | Issued |
Array
(
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[patent_issue_date] => 2022-06-30
[patent_title] => ROTARY JOINT
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Array
(
[id] => 16207481
[patent_doc_number] => 20200240471
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[patent_kind] => A1
[patent_issue_date] => 2020-07-30
[patent_title] => OIL CONTROL FOR SEAL PLATES
[patent_app_type] => utility
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[patent_app_country] => US
[patent_app_date] => 2020-04-16
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[rel_patent_id] =>[rel_patent_doc_number] =>) 16/850497 | Oil control for seal plates | Apr 15, 2020 | Issued |
Array
(
[id] => 16377150
[patent_doc_number] => 20200325992
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[patent_kind] => A1
[patent_issue_date] => 2020-10-15
[patent_title] => METHOD OF FORMING SEALING ELEMENTS FOR USE IN A MECHANICAL SEAL
[patent_app_type] => utility
[patent_app_number] => 16/844371
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Array
(
[id] => 16377149
[patent_doc_number] => 20200325991
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[patent_issue_date] => 2020-10-15
[patent_title] => SEALING COVER ELEMENT IN A MECHANICAL SEAL
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Array
(
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[patent_doc_number] => 20230095849
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[patent_title] => SLIDING COMPONENT
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Array
(
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[patent_doc_number] => 12013039
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[patent_issue_date] => 2024-06-18
[patent_title] => Compact low friction high temperature shaft seal and attachment
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[rel_patent_id] =>[rel_patent_doc_number] =>) 16/841378 | Compact low friction high temperature shaft seal and attachment | Apr 5, 2020 | Issued |
Array
(
[id] => 17860530
[patent_doc_number] => 11441682
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[patent_issue_date] => 2022-09-13
[patent_title] => Piston ring, reciprocating compressor, method for selecting piston ring and method for evaluating life of piston ring
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[patent_app_number] => 16/837538
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[rel_patent_id] =>[rel_patent_doc_number] =>) 16/837538 | Piston ring, reciprocating compressor, method for selecting piston ring and method for evaluating life of piston ring | Mar 31, 2020 | Issued |
Array
(
[id] => 17571789
[patent_doc_number] => 11320051
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[patent_kind] => B2
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[patent_title] => Seal ring
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[rel_patent_id] =>[rel_patent_doc_number] =>) 16/825152 | Seal ring | Mar 19, 2020 | Issued |
Array
(
[id] => 17612548
[patent_doc_number] => 20220154827
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[patent_kind] => A1
[patent_issue_date] => 2022-05-19
[patent_title] => CONTROL APPARATUS AND METHOD FOR SUPPLYING PURGE GAS
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[rel_patent_id] =>[rel_patent_doc_number] =>) 17/440599 | CONTROL APPARATUS AND METHOD FOR SUPPLYING PURGE GAS | Mar 18, 2020 | Abandoned |
Array
(
[id] => 17673551
[patent_doc_number] => 20220186718
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2022-06-16
[patent_title] => Novel Fluid End Packing Assembly
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[rel_patent_id] =>[rel_patent_doc_number] =>) 17/438919 | Fluid end packing assembly | Mar 12, 2020 | Issued |
Array
(
[id] => 17697892
[patent_doc_number] => 11371611
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[patent_kind] => B2
[patent_issue_date] => 2022-06-28
[patent_title] => Seal member for bearing and production method therefor
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[rel_patent_id] =>[rel_patent_doc_number] =>) 16/813015 | Seal member for bearing and production method therefor | Mar 8, 2020 | Issued |
Array
(
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[rel_patent_id] =>[rel_patent_doc_number] =>) 17/434884 | Pressure seal with built in testing system | Feb 25, 2020 | Issued |
Array
(
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Array
(
[id] => 17735601
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[patent_title] => MECHANICAL FACE SEAL ASSEMBLY, IN PARTICULAR FOR HOT MEDIA, AND PUMP ASSEMBLY
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Array
(
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Array
(
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Array
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Array
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