Search

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 numberTitle of the applicationFiling DateStatus
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 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5550 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [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] => 17078330 [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 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 32 [patent_figures_cnt] => 35 [patent_no_of_words] => 26013 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 243 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17915389 [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 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4205 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 108 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17039095 [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 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4218 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 177 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17025284 [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 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-07-18 [patent_title] => Fan for regenerative air vacuum street sweeper, and method of fan manufacture and assembly [patent_app_type] => utility [patent_app_number] => 16/948335 [patent_app_country] => US [patent_app_date] => 2020-09-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 7 [patent_no_of_words] => 2092 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [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] => 16948335 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/948335
Fan for regenerative air vacuum street sweeper, and method of fan manufacture and assembly Sep 13, 2020 Issued
Array ( [id] => 19884715 [patent_doc_number] => 12270413 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-04-08 [patent_title] => Compressor housing and centrifugal compressor [patent_app_type] => utility [patent_app_number] => 18/018144 [patent_app_country] => US [patent_app_date] => 2020-09-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 11 [patent_no_of_words] => 8157 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 202 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18018144 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/018144
Compressor housing and centrifugal compressor Sep 6, 2020 Issued
Array ( [id] => 16689204 [patent_doc_number] => 20210071680 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-03-11 [patent_title] => IMPELLER FOR A LIQUID PUMP [patent_app_type] => utility [patent_app_number] => 17/012130 [patent_app_country] => US [patent_app_date] => 2020-09-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1396 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [patent_words_short_claim] => 105 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17012130 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/012130
Impeller for a liquid pump Sep 3, 2020 Issued
Array ( [id] => 16437764 [patent_doc_number] => 20200355090 [patent_country] => US [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 [patent_app_country] => US [patent_app_date] => 2020-07-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9840 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 105 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16938579 [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 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-12-03 [patent_title] => IMPELLER, BLOWER, AND VACUUM CLEANER [patent_app_type] => utility [patent_app_number] => 16/890080 [patent_app_country] => US [patent_app_date] => 2020-06-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4775 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [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] => 16890080 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/890080
IMPELLER, BLOWER, AND VACUUM CLEANER Jun 1, 2020 Abandoned
Array ( [id] => 16313082 [patent_doc_number] => 20200291820 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-09-17 [patent_title] => TURBINE RING ASSEMBLY [patent_app_type] => utility [patent_app_number] => 16/886331 [patent_app_country] => US [patent_app_date] => 2020-05-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5395 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -7 [patent_words_short_claim] => 195 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16886331 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/886331
Turbine ring assembly May 27, 2020 Issued
Array ( [id] => 18436964 [patent_doc_number] => 20230184258 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-06-15 [patent_title] => CENTRIFUGAL COMPRESSOR IMPELLER AND CENTRIFUGAL COMPRESSOR [patent_app_type] => utility [patent_app_number] => 17/925120 [patent_app_country] => US [patent_app_date] => 2020-05-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8819 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 112 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17925120 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/925120
Centrifugal compressor impeller and centrifugal compressor May 19, 2020 Issued
Array ( [id] => 17244150 [patent_doc_number] => 20210363893 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-11-25 [patent_title] => FACE SEAL ARRANGEMENT [patent_app_type] => utility [patent_app_number] => 16/877636 [patent_app_country] => US [patent_app_date] => 2020-05-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3752 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 97 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16877636 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/877636
Face seal arrangement May 18, 2020 Issued
Array ( [id] => 17604685 [patent_doc_number] => 11333161 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-05-17 [patent_title] => Curved surface processing method for inlet edge of cylindrical blade of centrifugal pump impeller [patent_app_type] => utility [patent_app_number] => 17/251816 [patent_app_country] => US [patent_app_date] => 2020-05-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 1918 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 337 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17251816 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/251816
Curved surface processing method for inlet edge of cylindrical blade of centrifugal pump impeller May 17, 2020 Issued
Array ( [id] => 20107081 [patent_doc_number] => 12357780 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-07-15 [patent_title] => Fan unit for a ventilator [patent_app_type] => utility [patent_app_number] => 17/596666 [patent_app_country] => US [patent_app_date] => 2020-05-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 8 [patent_no_of_words] => 1214 [patent_no_of_claims] => 20 [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] => 17596666 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/596666
Fan unit for a ventilator May 17, 2020 Issued
Array ( [id] => 17215287 [patent_doc_number] => 20210348625 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-11-11 [patent_title] => FLUID PRESSURIZING STRUCTURE AND FAN USING SAME [patent_app_type] => utility [patent_app_number] => 16/867569 [patent_app_country] => US [patent_app_date] => 2020-05-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4612 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [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] => 16867569 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/867569
Fluid pressurizing structure and fan using same May 5, 2020 Issued
Array ( [id] => 17178865 [patent_doc_number] => 11156101 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-10-26 [patent_title] => Airfoil tip pocket with augmentation features [patent_app_type] => utility [patent_app_number] => 16/858955 [patent_app_country] => US [patent_app_date] => 2020-04-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 24 [patent_no_of_words] => 5165 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 223 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16858955 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/858955
Airfoil tip pocket with augmentation features Apr 26, 2020 Issued
Array ( [id] => 17688744 [patent_doc_number] => 20220196036 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-06-23 [patent_title] => COMPRESSOR [patent_app_type] => utility [patent_app_number] => 17/604193 [patent_app_country] => US [patent_app_date] => 2020-04-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2925 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -22 [patent_words_short_claim] => 25 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17604193 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/604193
Compressor Apr 14, 2020 Issued
Array ( [id] => 17142488 [patent_doc_number] => 20210310500 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-10-07 [patent_title] => JET STRUCTURE OF FAN ROTOR [patent_app_type] => utility [patent_app_number] => 16/842711 [patent_app_country] => US [patent_app_date] => 2020-04-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4583 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 120 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16842711 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/842711
Jet structure of fan rotor Apr 6, 2020 Issued
Array ( [id] => 19565353 [patent_doc_number] => 12140117 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-11-12 [patent_title] => Detecting rotor blade clearance in a wind turbine using doppler shift and a mathematical model [patent_app_type] => utility [patent_app_number] => 17/598960 [patent_app_country] => US [patent_app_date] => 2020-03-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 5 [patent_no_of_words] => 4019 [patent_no_of_claims] => 5 [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] => 17598960 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/598960
Detecting rotor blade clearance in a wind turbine using doppler shift and a mathematical model Mar 15, 2020 Issued
Array ( [id] => 18666859 [patent_doc_number] => 11773742 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-10-03 [patent_title] => Cooled cooling air for blade air seal through outer chamber [patent_app_type] => utility [patent_app_number] => 16/806168 [patent_app_country] => US [patent_app_date] => 2020-03-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 3079 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 287 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16806168 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/806168
Cooled cooling air for blade air seal through outer chamber Mar 1, 2020 Issued
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