
Joon H. Hwang
Supervisory Patent Examiner (ID: 13115, Phone: (571)272-4036 , Office: P/2447 )
| Most Active Art Unit | 2447 |
| Art Unit(s) | 2166, 2172, 2162, 2447 |
| Total Applications | 416 |
| Issued Applications | 149 |
| Pending Applications | 24 |
| Abandoned Applications | 242 |
Applications
| Application number | Title of the application | Filing Date | Status |
|---|---|---|---|
Array
(
[id] => 17007843
[patent_doc_number] => 20210239004
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2021-08-05
[patent_title] => AIRFOIL WITH COOLING HOLE
[patent_app_type] => utility
[patent_app_number] => 17/078330
[patent_app_country] => US
[patent_app_date] => 2020-10-23
[patent_effective_date] => 0000-00-00
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[rel_patent_id] =>[rel_patent_doc_number] =>) 17/078330 | Airfoil with cooling hole | Oct 22, 2020 | Issued |
Array
(
[id] => 19594769
[patent_doc_number] => 12152600
[patent_country] => US
[patent_kind] => B2
[patent_issue_date] => 2024-11-26
[patent_title] => Impeller, centrifugal fan, and air-conditioning apparatus
[patent_app_type] => utility
[patent_app_number] => 17/915389
[patent_app_country] => US
[patent_app_date] => 2020-10-22
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[rel_patent_id] =>[rel_patent_doc_number] =>) 17/915389 | Impeller, centrifugal fan, and air-conditioning apparatus | Oct 21, 2020 | Issued |
Array
(
[id] => 17506002
[patent_doc_number] => 20220099105
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2022-03-31
[patent_title] => DYNAMIC FLUID MACHINE WITH EXPONENTIAL INLET
[patent_app_type] => utility
[patent_app_number] => 17/039095
[patent_app_country] => US
[patent_app_date] => 2020-09-30
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[rel_patent_id] =>[rel_patent_doc_number] =>) 17/039095 | DYNAMIC FLUID MACHINE WITH EXPONENTIAL INLET | Sep 29, 2020 | Abandoned |
Array
(
[id] => 16557993
[patent_doc_number] => 20210003141
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2021-01-07
[patent_title] => FAN WHEEL DRIVEN IN ONLY ONE ROTATIONAL DIRECTION
[patent_app_type] => utility
[patent_app_number] => 17/025284
[patent_app_country] => US
[patent_app_date] => 2020-09-18
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[rel_patent_id] =>[rel_patent_doc_number] =>) 17/025284 | Fan wheel driven in only one rotational direction | Sep 17, 2020 | Issued |
Array
(
[id] => 18505001
[patent_doc_number] => 11702806
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[patent_issue_date] => 2023-07-18
[patent_title] => Fan for regenerative air vacuum street sweeper, and method of fan manufacture and assembly
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Array
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[patent_doc_number] => 12270413
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[patent_issue_date] => 2025-04-08
[patent_title] => Compressor housing and centrifugal compressor
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Array
(
[id] => 16689204
[patent_doc_number] => 20210071680
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[patent_kind] => A1
[patent_issue_date] => 2021-03-11
[patent_title] => IMPELLER FOR A LIQUID PUMP
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Array
(
[id] => 16437764
[patent_doc_number] => 20200355090
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[patent_kind] => A1
[patent_issue_date] => 2020-11-12
[patent_title] => ELECTRIC HEATING FOR TURBOMACHINERY CLEARANCE CONTROL POWERED BY HYBRID ENERGY STORAGE SYSTEM
[patent_app_type] => utility
[patent_app_number] => 16/938579
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[rel_patent_id] =>[rel_patent_doc_number] =>) 16/938579 | Electric heating for turbomachinery clearance control powered by hybrid energy storage system | Jul 23, 2020 | Issued |
Array
(
[id] => 16484797
[patent_doc_number] => 20200378398
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[patent_issue_date] => 2020-12-03
[patent_title] => IMPELLER, BLOWER, AND VACUUM CLEANER
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Array
(
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[patent_title] => TURBINE RING ASSEMBLY
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Array
(
[id] => 18436964
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[patent_title] => CENTRIFUGAL COMPRESSOR IMPELLER AND CENTRIFUGAL COMPRESSOR
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[rel_patent_id] =>[rel_patent_doc_number] =>) 17/925120 | Centrifugal compressor impeller and centrifugal compressor | May 19, 2020 | Issued |
Array
(
[id] => 17244150
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[patent_title] => FACE SEAL ARRANGEMENT
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Array
(
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[patent_title] => Curved surface processing method for inlet edge of cylindrical blade of centrifugal pump impeller
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Array
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Array
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[patent_title] => FLUID PRESSURIZING STRUCTURE AND FAN USING SAME
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Array
(
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Array
(
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Array
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