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] => 18737041 [patent_doc_number] => 20230345931 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-11-02 [patent_title] => WILDLIFE DETERRING WINDMILL [patent_app_type] => utility [patent_app_number] => 18/309945 [patent_app_country] => US [patent_app_date] => 2023-05-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6801 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 134 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18309945 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/309945
WILDLIFE DETERRING WINDMILL Apr 30, 2023 Abandoned
Array ( [id] => 19544002 [patent_doc_number] => 20240361038 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-10-31 [patent_title] => INDUCTIVE INTELLIGENT WATER HEATER [patent_app_type] => utility [patent_app_number] => 18/309201 [patent_app_country] => US [patent_app_date] => 2023-04-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 12440 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 206 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18309201 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/309201
INDUCTIVE INTELLIGENT WATER HEATER Apr 27, 2023 Pending
Array ( [id] => 18745492 [patent_doc_number] => 20230354486 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-11-02 [patent_title] => METHOD AND APPARATUS FOR CONTROLLING ELECTROMAGNETIC HEATING DEVICE, AND ELECTROMAGNETIC HEATING DEVICE [patent_app_type] => utility [patent_app_number] => 18/308251 [patent_app_country] => US [patent_app_date] => 2023-04-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6168 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 81 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18308251 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/308251
METHOD AND APPARATUS FOR CONTROLLING ELECTROMAGNETIC HEATING DEVICE, AND ELECTROMAGNETIC HEATING DEVICE Apr 26, 2023 Pending
Array ( [id] => 19218628 [patent_doc_number] => 20240183332 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-06-06 [patent_title] => WIND TURBINE [patent_app_type] => utility [patent_app_number] => 18/138843 [patent_app_country] => US [patent_app_date] => 2023-04-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3124 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 132 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18138843 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/138843
WIND TURBINE Apr 24, 2023 Abandoned
Array ( [id] => 18764582 [patent_doc_number] => 11814971 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-11-14 [patent_title] => Probe placement optimization in gas turbine engines [patent_app_type] => utility [patent_app_number] => 18/138658 [patent_app_country] => US [patent_app_date] => 2023-04-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 11 [patent_no_of_words] => 4989 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 118 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18138658 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/138658
Probe placement optimization in gas turbine engines Apr 23, 2023 Issued
Array ( [id] => 18771549 [patent_doc_number] => 20230366370 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-11-16 [patent_title] => WIND TURBINE ROTOR BLADE AND WIND TURBINE [patent_app_type] => utility [patent_app_number] => 18/302450 [patent_app_country] => US [patent_app_date] => 2023-04-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4228 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 111 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18302450 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/302450
WIND TURBINE ROTOR BLADE AND WIND TURBINE Apr 17, 2023 Abandoned
Array ( [id] => 19948978 [patent_doc_number] => 12320332 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-06-03 [patent_title] => Vertical axis wind turbine with variable thickness blade [patent_app_type] => utility [patent_app_number] => 18/295077 [patent_app_country] => US [patent_app_date] => 2023-04-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 10 [patent_no_of_words] => 7914 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 133 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18295077 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/295077
Vertical axis wind turbine with variable thickness blade Apr 2, 2023 Issued
Array ( [id] => 18845363 [patent_doc_number] => 20230407767 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-12-21 [patent_title] => SPLIT CASE STRUCTURE FOR A GAS TURBINE ENGINE [patent_app_type] => utility [patent_app_number] => 18/126774 [patent_app_country] => US [patent_app_date] => 2023-03-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7339 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 70 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18126774 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/126774
SPLIT CASE STRUCTURE FOR A GAS TURBINE ENGINE Mar 26, 2023 Pending
Array ( [id] => 19464934 [patent_doc_number] => 20240318603 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-09-26 [patent_title] => COMBINED CONTROL VALVE AND AIR TURBINE STARTER [patent_app_type] => utility [patent_app_number] => 18/189384 [patent_app_country] => US [patent_app_date] => 2023-03-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1342 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [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] => 18189384 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/189384
Combined control valve and air turbine starter Mar 23, 2023 Issued
Array ( [id] => 19810012 [patent_doc_number] => 12241386 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-03-04 [patent_title] => Turbine engine airfoil with a woven core and woven layer [patent_app_type] => utility [patent_app_number] => 18/171938 [patent_app_country] => US [patent_app_date] => 2023-02-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 8380 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 115 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18171938 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/171938
Turbine engine airfoil with a woven core and woven layer Feb 20, 2023 Issued
Array ( [id] => 19863171 [patent_doc_number] => 20250101957 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-03-27 [patent_title] => WIND TURBINE ROTOR BLADE AND WIND TURBINE [patent_app_type] => utility [patent_app_number] => 18/832517 [patent_app_country] => US [patent_app_date] => 2023-02-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8557 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 132 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18832517 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/832517
WIND TURBINE ROTOR BLADE AND WIND TURBINE Feb 19, 2023 Pending
Array ( [id] => 20121034 [patent_doc_number] => 20250236065 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-24 [patent_title] => METHOD FOR APPLYING A PROTECTIVE FILM ON AT LEAST ONE PORTION OF A WIND TURBINE BLADE, WIND TURBINE BLADE, AND APPARATUS FOR FORMING A GROOVE ON A SURFACE OF AT LEAST ONE PORTION OF A WIND TURBINE BLADE [patent_app_type] => utility [patent_app_number] => 18/838774 [patent_app_country] => US [patent_app_date] => 2023-02-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1291 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [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] => 18838774 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/838774
METHOD FOR APPLYING A PROTECTIVE FILM ON AT LEAST ONE PORTION OF A WIND TURBINE BLADE, WIND TURBINE BLADE, AND APPARATUS FOR FORMING A GROOVE ON A SURFACE OF AT LEAST ONE PORTION OF A WIND TURBINE BLADE Feb 15, 2023 Pending
Array ( [id] => 18583565 [patent_doc_number] => 20230265826 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-08-24 [patent_title] => ROTOR BLADE OF A WIND POWER INSTALLATION [patent_app_type] => utility [patent_app_number] => 18/167636 [patent_app_country] => US [patent_app_date] => 2023-02-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6475 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -20 [patent_words_short_claim] => 99 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18167636 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/167636
ROTOR BLADE OF A WIND POWER INSTALLATION Feb 9, 2023 Abandoned
Array ( [id] => 19615880 [patent_doc_number] => 20240401560 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-12-05 [patent_title] => Improved hybrid pultrusion plates for a conductive spar cap of a wind turbine blade [patent_app_type] => utility [patent_app_number] => 18/718607 [patent_app_country] => US [patent_app_date] => 2023-02-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9258 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [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] => 18718607 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/718607
Improved hybrid pultrusion plates for a conductive spar cap of a wind turbine blade Feb 2, 2023 Pending
Array ( [id] => 19143052 [patent_doc_number] => 20240141909 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-02 [patent_title] => FAN FRAME AND FAN MODULE [patent_app_type] => utility [patent_app_number] => 18/104752 [patent_app_country] => US [patent_app_date] => 2023-02-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2792 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [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] => 18104752 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/104752
FAN FRAME AND FAN MODULE Jan 31, 2023 Abandoned
Array ( [id] => 19846358 [patent_doc_number] => 20250091709 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-03-20 [patent_title] => ROTOR BLADE [patent_app_type] => utility [patent_app_number] => 18/726917 [patent_app_country] => US [patent_app_date] => 2023-01-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 15807 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [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] => 18726917 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/726917
ROTOR BLADE Jan 29, 2023 Pending
Array ( [id] => 19800079 [patent_doc_number] => 20250066004 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-02-27 [patent_title] => WINGSAIL AND METHOD [patent_app_type] => utility [patent_app_number] => 18/725010 [patent_app_country] => US [patent_app_date] => 2022-12-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 15587 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [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] => 18725010 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/725010
WINGSAIL AND METHOD Dec 22, 2022 Pending
Array ( [id] => 19027851 [patent_doc_number] => 11927200 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-03-12 [patent_title] => Rotary machine [patent_app_type] => utility [patent_app_number] => 18/067842 [patent_app_country] => US [patent_app_date] => 2022-12-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 6 [patent_no_of_words] => 5427 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 208 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18067842 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/067842
Rotary machine Dec 18, 2022 Issued
Array ( [id] => 19631891 [patent_doc_number] => 20240410340 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-12-12 [patent_title] => LIGHTNING PROTECTION SYSTEM [patent_app_type] => utility [patent_app_number] => 18/717503 [patent_app_country] => US [patent_app_date] => 2022-12-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7066 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 80 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18717503 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/717503
LIGHTNING PROTECTION SYSTEM Dec 7, 2022 Pending
Array ( [id] => 20180157 [patent_doc_number] => 20250264115 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-08-21 [patent_title] => METHOD OF DESIGNING SINGLE-CHANNEL PUMP AND SINGLE-CHANNEL PUMP [patent_app_type] => utility [patent_app_number] => 18/698357 [patent_app_country] => US [patent_app_date] => 2022-11-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5581 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 205 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18698357 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/698357
METHOD OF DESIGNING SINGLE-CHANNEL PUMP AND SINGLE-CHANNEL PUMP Nov 29, 2022 Pending
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