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] => 18512007 [patent_doc_number] => 20230228202 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-07-20 [patent_title] => STATOR PLENUM WITH COLLET SEAL [patent_app_type] => utility [patent_app_number] => 17/580426 [patent_app_country] => US [patent_app_date] => 2022-01-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8179 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [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] => 17580426 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/580426
Stator plenum for a gas turbine engine Jan 19, 2022 Issued
Array ( [id] => 19034969 [patent_doc_number] => 20240084784 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-03-14 [patent_title] => WIND TURBINE ROTOR BLADE AND METAL SHEET [patent_app_type] => utility [patent_app_number] => 18/262339 [patent_app_country] => US [patent_app_date] => 2022-01-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5916 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -25 [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] => 18262339 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/262339
Wind turbine rotor blade and metal sheet Jan 10, 2022 Issued
Array ( [id] => 19068027 [patent_doc_number] => 20240102453 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-03-28 [patent_title] => HYBRID POLTRUSION PLATES FOR A CONDUCTIVE SPAR CAP OF A WIND TURBINE BLADE [patent_app_type] => utility [patent_app_number] => 18/266794 [patent_app_country] => US [patent_app_date] => 2021-12-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10776 [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] => 18266794 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/266794
HYBRID POLTRUSION PLATES FOR A CONDUCTIVE SPAR CAP OF A WIND TURBINE BLADE Dec 29, 2021 Abandoned
Array ( [id] => 19004366 [patent_doc_number] => 20240068437 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-29 [patent_title] => HYBRID PULTRUSION PLATES FOR A CONDUCTIVE SPAR CAP OF A WIND TURBINE BLADE [patent_app_type] => utility [patent_app_number] => 18/268210 [patent_app_country] => US [patent_app_date] => 2021-12-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7753 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => 0 [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] => 18268210 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/268210
HYBRID PULTRUSION PLATES FOR A CONDUCTIVE SPAR CAP OF A WIND TURBINE BLADE Dec 29, 2021 Pending
Array ( [id] => 18917152 [patent_doc_number] => 11879425 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-01-23 [patent_title] => System and method for controlling blade pitch of wind turbine rotor blades in an idling state of the rotor hub [patent_app_type] => utility [patent_app_number] => 17/545006 [patent_app_country] => US [patent_app_date] => 2021-12-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 8013 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 149 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17545006 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/545006
System and method for controlling blade pitch of wind turbine rotor blades in an idling state of the rotor hub Dec 7, 2021 Issued
Array ( [id] => 17657800 [patent_doc_number] => 20220178265 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-06-09 [patent_title] => FLUID FLOW GUIDING DEVICE AND A GAS TURBINE ENGINE [patent_app_type] => utility [patent_app_number] => 17/544063 [patent_app_country] => US [patent_app_date] => 2021-12-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6455 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 95 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17544063 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/544063
FLUID FLOW GUIDING DEVICE AND A GAS TURBINE ENGINE Dec 6, 2021 Abandoned
Array ( [id] => 19397505 [patent_doc_number] => 12071858 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-08-27 [patent_title] => Fire retardant engine casing apparatus [patent_app_type] => utility [patent_app_number] => 17/543347 [patent_app_country] => US [patent_app_date] => 2021-12-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 14 [patent_no_of_words] => 11058 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 97 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17543347 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/543347
Fire retardant engine casing apparatus Dec 5, 2021 Issued
Array ( [id] => 18903397 [patent_doc_number] => 20240018882 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-01-18 [patent_title] => CASE COMPRISING INTERNAL AND/OR EXTERNAL STIFFENERS [patent_app_type] => utility [patent_app_number] => 18/036035 [patent_app_country] => US [patent_app_date] => 2021-11-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1843 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 104 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18036035 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/036035
CASE COMPRISING INTERNAL AND/OR EXTERNAL STIFFENERS Nov 16, 2021 Issued
Array ( [id] => 18879891 [patent_doc_number] => 20240003260 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-01-04 [patent_title] => COMPOSITE PART, IN PARTICULAR FOR AN AIRCRAFT TURBINE ENGINE [patent_app_type] => utility [patent_app_number] => 18/252753 [patent_app_country] => US [patent_app_date] => 2021-11-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6954 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 30 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18252753 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/252753
Composite part, in particular for an aircraft turbine engine Nov 16, 2021 Issued
Array ( [id] => 18818178 [patent_doc_number] => 20230392518 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-12-07 [patent_title] => ASSEMBLY FOR A TURBOMACHINE [patent_app_type] => utility [patent_app_number] => 18/034659 [patent_app_country] => US [patent_app_date] => 2021-11-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3626 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 161 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18034659 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/034659
Exhaust cone for a turbomachine Nov 2, 2021 Issued
Array ( [id] => 18818268 [patent_doc_number] => 20230392608 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-12-07 [patent_title] => IMPELLER SEAT WITH A GUIDE PIN FOR A PUMP [patent_app_type] => utility [patent_app_number] => 18/033910 [patent_app_country] => US [patent_app_date] => 2021-10-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6335 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [patent_words_short_claim] => 194 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18033910 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/033910
Impeller seat with a guide pin for a pump Oct 24, 2021 Issued
Array ( [id] => 18188129 [patent_doc_number] => 11578701 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-02-14 [patent_title] => Method of determining an induction factor between a measurement plane and the rotor plane of a wind turbine [patent_app_type] => utility [patent_app_number] => 17/495802 [patent_app_country] => US [patent_app_date] => 2021-10-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 6 [patent_no_of_words] => 8654 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 235 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17495802 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/495802
Method of determining an induction factor between a measurement plane and the rotor plane of a wind turbine Oct 5, 2021 Issued
Array ( [id] => 19458219 [patent_doc_number] => 12098702 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2024-09-24 [patent_title] => Vertical axis wind energy [patent_app_type] => utility [patent_app_number] => 17/490115 [patent_app_country] => US [patent_app_date] => 2021-09-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 4246 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 225 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17490115 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/490115
Vertical axis wind energy Sep 29, 2021 Issued
Array ( [id] => 18549801 [patent_doc_number] => 11723172 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-08-08 [patent_title] => Fan impeller with sections having different blade design geometries [patent_app_type] => utility [patent_app_number] => 17/448700 [patent_app_country] => US [patent_app_date] => 2021-09-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 16 [patent_no_of_words] => 9471 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 190 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17448700 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/448700
Fan impeller with sections having different blade design geometries Sep 22, 2021 Issued
Array ( [id] => 18621059 [patent_doc_number] => 11754087 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-09-12 [patent_title] => Oil dispersion system using actuator for propellers [patent_app_type] => utility [patent_app_number] => 17/479545 [patent_app_country] => US [patent_app_date] => 2021-09-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 5021 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 119 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17479545 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/479545
Oil dispersion system using actuator for propellers Sep 19, 2021 Issued
Array ( [id] => 17474576 [patent_doc_number] => 20220082080 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-03-17 [patent_title] => SECTION WIND TURBINE BLADE AND ASSEMBLY OF A SECTION WIND TURBINE BLADE [patent_app_type] => utility [patent_app_number] => 17/475524 [patent_app_country] => US [patent_app_date] => 2021-09-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8157 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [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] => 17475524 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/475524
Section wind turbine blade and assembly of a section wind turbine blade Sep 14, 2021 Issued
Array ( [id] => 19196909 [patent_doc_number] => 11994141 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-05-28 [patent_title] => Turbomachinery shaft with variable lattice densities [patent_app_type] => utility [patent_app_number] => 17/472184 [patent_app_country] => US [patent_app_date] => 2021-09-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 5570 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 184 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17472184 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/472184
Turbomachinery shaft with variable lattice densities Sep 9, 2021 Issued
Array ( [id] => 19991522 [patent_doc_number] => 20250129744 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-04-24 [patent_title] => CYCLONIC PARTICLE SEPARATOR [patent_app_type] => utility [patent_app_number] => 18/689291 [patent_app_country] => US [patent_app_date] => 2021-09-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3180 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -20 [patent_words_short_claim] => 158 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18689291 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/689291
Gas turbine aerodynamic component cyclonic particle separator with multiple particle traps Sep 8, 2021 Issued
Array ( [id] => 18329768 [patent_doc_number] => 11634999 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-04-25 [patent_title] => Probe placement optimization in gas turbine engines [patent_app_type] => utility [patent_app_number] => 17/461753 [patent_app_country] => US [patent_app_date] => 2021-08-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 11 [patent_no_of_words] => 5168 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 176 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17461753 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/461753
Probe placement optimization in gas turbine engines Aug 29, 2021 Issued
Array ( [id] => 19292171 [patent_doc_number] => 12031521 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2024-07-09 [patent_title] => Bulkhead removal device and method [patent_app_type] => utility [patent_app_number] => 17/459422 [patent_app_country] => US [patent_app_date] => 2021-08-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 25 [patent_figures_cnt] => 26 [patent_no_of_words] => 7392 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 90 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17459422 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/459422
Bulkhead removal device and method Aug 26, 2021 Issued
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