Search

Richard K. Chang

Examiner (ID: 15304, Phone: (571)270-3368 , Office: P/2464 )

Most Active Art Unit
2464
Art Unit(s)
2663, 2464, 2616
Total Applications
302
Issued Applications
252
Pending Applications
10
Abandoned Applications
46

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 12586698 [patent_doc_number] => 20180087395 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-03-29 [patent_title] => GAS TURBINE ENGINE [patent_app_type] => utility [patent_app_number] => 15/714082 [patent_app_country] => US [patent_app_date] => 2017-09-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8070 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 166 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15714082 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/714082
GAS TURBINE ENGINE Sep 24, 2017 Abandoned
Array ( [id] => 14073637 [patent_doc_number] => 20190085706 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-03-21 [patent_title] => TURBINE ENGINE AIRFOIL ASSEMBLY [patent_app_type] => utility [patent_app_number] => 15/707464 [patent_app_country] => US [patent_app_date] => 2017-09-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5099 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -27 [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] => 15707464 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/707464
TURBINE ENGINE AIRFOIL ASSEMBLY Sep 17, 2017 Abandoned
Array ( [id] => 14044725 [patent_doc_number] => 20190078469 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-03-14 [patent_title] => FAN EXIT STATOR ASSEMBLY RETENTION SYSTEM [patent_app_type] => utility [patent_app_number] => 15/700608 [patent_app_country] => US [patent_app_date] => 2017-09-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3405 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 86 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15700608 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/700608
FAN EXIT STATOR ASSEMBLY RETENTION SYSTEM Sep 10, 2017 Abandoned
Array ( [id] => 14503169 [patent_doc_number] => 20190195239 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-06-27 [patent_title] => INTERFACE MEMBER FOR RECONDITIONING A CONTROL RING OF AN ENGINE COMPRESSOR, AND ASSOCIATED RECONDITIONING METHOD [patent_app_type] => utility [patent_app_number] => 16/326866 [patent_app_country] => US [patent_app_date] => 2017-08-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2771 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 91 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16326866 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/326866
Interface member for reconditioning a control ring of an engine compressor, and associated reconditioning method Aug 21, 2017 Issued
Array ( [id] => 17968978 [patent_doc_number] => 11486497 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-11-01 [patent_title] => Compact brush seal [patent_app_type] => utility [patent_app_number] => 15/653892 [patent_app_country] => US [patent_app_date] => 2017-07-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 6 [patent_no_of_words] => 6278 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 104 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15653892 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/653892
Compact brush seal Jul 18, 2017 Issued
Array ( [id] => 17588352 [patent_doc_number] => 11326613 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-05-10 [patent_title] => Fan for ventilating or conditioning environment [patent_app_type] => utility [patent_app_number] => 16/303087 [patent_app_country] => US [patent_app_date] => 2017-05-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 5106 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 343 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16303087 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/303087
Fan for ventilating or conditioning environment May 17, 2017 Issued
Array ( [id] => 17588351 [patent_doc_number] => 11326612 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-05-10 [patent_title] => Fan for ventilating or conditioning environment [patent_app_type] => utility [patent_app_number] => 16/303066 [patent_app_country] => US [patent_app_date] => 2017-05-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 6 [patent_no_of_words] => 5074 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [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] => 16303066 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/303066
Fan for ventilating or conditioning environment May 17, 2017 Issued
Array ( [id] => 13445957 [patent_doc_number] => 20180274521 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-09-27 [patent_title] => Method for Securing a Lightning Receptor Cable Within a Segmented Rotor Blade [patent_app_type] => utility [patent_app_number] => 15/466109 [patent_app_country] => US [patent_app_date] => 2017-03-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4955 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 146 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15466109 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/466109
Method for securing a lightning receptor cable within a segmented rotor blade Mar 21, 2017 Issued
Array ( [id] => 16573349 [patent_doc_number] => 10895265 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-01-19 [patent_title] => Sealing arrangement for adjustable elements of a pump [patent_app_type] => utility [patent_app_number] => 16/086116 [patent_app_country] => US [patent_app_date] => 2017-03-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 12 [patent_no_of_words] => 6556 [patent_no_of_claims] => 23 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 194 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16086116 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/086116
Sealing arrangement for adjustable elements of a pump Mar 9, 2017 Issued
Array ( [id] => 14809431 [patent_doc_number] => 20190271325 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-09-05 [patent_title] => ROTATING MACHINE [patent_app_type] => utility [patent_app_number] => 16/344270 [patent_app_country] => US [patent_app_date] => 2017-02-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7168 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [patent_words_short_claim] => 187 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16344270 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/344270
Rotating machine Feb 1, 2017 Issued
Array ( [id] => 16422623 [patent_doc_number] => 20200347821 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-11-05 [patent_title] => METHOD FOR EVALUATING AN INFLOW ON A ROTOR BLADE OF A WIND TURBINE, METHOD FOR CONTROLLING A WIND TURBINE, AND A WIND TURBINE [patent_app_type] => utility [patent_app_number] => 16/069127 [patent_app_country] => US [patent_app_date] => 2017-01-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9479 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 16069127 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/069127
METHOD FOR EVALUATING AN INFLOW ON A ROTOR BLADE OF A WIND TURBINE, METHOD FOR CONTROLLING A WIND TURBINE, AND A WIND TURBINE Jan 12, 2017 Abandoned
Array ( [id] => 16969836 [patent_doc_number] => 11065789 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-07-20 [patent_title] => Method for establishing of erosion resistant surface part on a wind turbine blade, method for creation of an erosion resistant coating, wind turbine blade with retrofitted coating in and around areas where the blade is especially exposed to erosion damages, coating for mounting on a wind turbine blade's front edge [patent_app_type] => utility [patent_app_number] => 16/066384 [patent_app_country] => US [patent_app_date] => 2016-12-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 12 [patent_no_of_words] => 6844 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 284 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16066384 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/066384
Method for establishing of erosion resistant surface part on a wind turbine blade, method for creation of an erosion resistant coating, wind turbine blade with retrofitted coating in and around areas where the blade is especially exposed to erosion damages, coating for mounting on a wind turbine blade's front edge Dec 12, 2016 Issued
Array ( [id] => 11472119 [patent_doc_number] => 20170058902 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2017-03-02 [patent_title] => 'Turbine Cap for Turbo-Molecular Pump' [patent_app_type] => utility [patent_app_number] => 15/340804 [patent_app_country] => US [patent_app_date] => 2016-11-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 2884 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15340804 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/340804
Turbine cap for turbo-molecular pump Oct 31, 2016 Issued
Array ( [id] => 12642981 [patent_doc_number] => 20180106158 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-04-19 [patent_title] => VANE INTERSEGMENT GAP SEALING ARRANGEMENT [patent_app_type] => utility [patent_app_number] => 15/295694 [patent_app_country] => US [patent_app_date] => 2016-10-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6213 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 15295694 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/295694
Vane intersegment gap sealing arrangement Oct 16, 2016 Issued
Array ( [id] => 16177578 [patent_doc_number] => 20200224546 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-07-16 [patent_title] => BIMETAL THERMO MECHANICAL ACTUATOR [patent_app_type] => utility [patent_app_number] => 16/341088 [patent_app_country] => US [patent_app_date] => 2016-10-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3770 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 153 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16341088 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/341088
BIMETAL THERMO MECHANICAL ACTUATOR Oct 12, 2016 Abandoned
Array ( [id] => 17060618 [patent_doc_number] => 11105210 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-08-31 [patent_title] => Blade comprising a leading edge shield and method for producing the blade [patent_app_type] => utility [patent_app_number] => 15/763404 [patent_app_country] => US [patent_app_date] => 2016-09-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 12 [patent_no_of_words] => 4018 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 114 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15763404 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/763404
Blade comprising a leading edge shield and method for producing the blade Sep 26, 2016 Issued
Array ( [id] => 13445951 [patent_doc_number] => 20180274518 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-09-27 [patent_title] => WIND TURBINE ROTOR BLADE AND WIND TURBINE SYSTEM [patent_app_type] => utility [patent_app_number] => 15/764777 [patent_app_country] => US [patent_app_date] => 2016-09-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4944 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [patent_words_short_claim] => 86 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15764777 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/764777
WIND TURBINE ROTOR BLADE AND WIND TURBINE SYSTEM Sep 25, 2016 Abandoned
Array ( [id] => 12261279 [patent_doc_number] => 20180080476 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-03-22 [patent_title] => 'GEARED TURBOFAN FRONT CENTER BODY THERMAL MANAGEMENT' [patent_app_type] => utility [patent_app_number] => 15/269342 [patent_app_country] => US [patent_app_date] => 2016-09-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 4160 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15269342 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/269342
GEARED TURBOFAN FRONT CENTER BODY THERMAL MANAGEMENT Sep 18, 2016 Abandoned
Array ( [id] => 12240572 [patent_doc_number] => 20180073435 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-03-15 [patent_title] => 'NOISE-MITIGATING TRANSFER DUCT FOR ACTIVE TIP CLEARANCE CONTROL SYSTEM OF GAS TURBINE ENGINE' [patent_app_type] => utility [patent_app_number] => 15/260404 [patent_app_country] => US [patent_app_date] => 2016-09-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 4464 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15260404 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/260404
NOISE-MITIGATING TRANSFER DUCT FOR ACTIVE TIP CLEARANCE CONTROL SYSTEM OF GAS TURBINE ENGINE Sep 8, 2016 Abandoned
Array ( [id] => 14552587 [patent_doc_number] => 10344742 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2019-07-09 [patent_title] => Hybrid vertical/horizontal axis wind turbine for deep-water offshore installations [patent_app_type] => utility [patent_app_number] => 15/259969 [patent_app_country] => US [patent_app_date] => 2016-09-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 10 [patent_no_of_words] => 9485 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 393 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15259969 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/259969
Hybrid vertical/horizontal axis wind turbine for deep-water offshore installations Sep 7, 2016 Issued
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