Search

David W Duffy

Examiner (ID: 931, Phone: (571)272-1574 , Office: P/3716 )

Most Active Art Unit
3716
Art Unit(s)
3700, 3714, 3716, 3715
Total Applications
553
Issued Applications
291
Pending Applications
12
Abandoned Applications
250

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 18880174 [patent_doc_number] => 20240003543 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-01-04 [patent_title] => ACOUSTIC LINER FOR A GAS TURBINE ENGINE [patent_app_type] => utility [patent_app_number] => 17/853200 [patent_app_country] => US [patent_app_date] => 2022-06-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9092 [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] => 17853200 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/853200
ACOUSTIC LINER FOR A GAS TURBINE ENGINE Jun 28, 2022 Pending
Array ( [id] => 17946605 [patent_doc_number] => 20220333624 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-10-20 [patent_title] => VARIABLE GEOMETRY THRUSTER [patent_app_type] => utility [patent_app_number] => 17/853665 [patent_app_country] => US [patent_app_date] => 2022-06-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2281 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 100 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17853665 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/853665
Variable geometry thruster Jun 28, 2022 Issued
Array ( [id] => 18794487 [patent_doc_number] => 11828248 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2023-11-28 [patent_title] => Rotatably driven exhaust mixer [patent_app_type] => utility [patent_app_number] => 17/809033 [patent_app_country] => US [patent_app_date] => 2022-06-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 4368 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 160 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17809033 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/809033
Rotatably driven exhaust mixer Jun 26, 2022 Issued
Array ( [id] => 18123958 [patent_doc_number] => 20230009569 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-01-12 [patent_title] => VARIABLE GEOMETRY THRUSTER [patent_app_type] => utility [patent_app_number] => 17/837892 [patent_app_country] => US [patent_app_date] => 2022-06-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2279 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 100 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17837892 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/837892
VARIABLE GEOMETRY THRUSTER Jun 9, 2022 Abandoned
Array ( [id] => 18421229 [patent_doc_number] => 20230175692 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-06-08 [patent_title] => DOME-INTEGRATED ACOUSTIC DAMPER FOR GAS TURBINE COMBUSTOR APPLICATIONS [patent_app_type] => utility [patent_app_number] => 17/806116 [patent_app_country] => US [patent_app_date] => 2022-06-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5301 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 82 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17806116 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/806116
DOME-INTEGRATED ACOUSTIC DAMPER FOR GAS TURBINE COMBUSTOR APPLICATIONS Jun 8, 2022 Pending
Array ( [id] => 17883488 [patent_doc_number] => 20220298965 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-09-22 [patent_title] => SYSTEMS AND METHODS FOR OXIDATION OF HYDROCARBON GASES [patent_app_type] => utility [patent_app_number] => 17/832247 [patent_app_country] => US [patent_app_date] => 2022-06-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7625 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [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] => 17832247 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/832247
SYSTEMS AND METHODS FOR OXIDATION OF HYDROCARBON GASES Jun 2, 2022 Pending
Array ( [id] => 18078168 [patent_doc_number] => 20220403780 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-12-22 [patent_title] => GAS TURBINE ENGINE [patent_app_type] => utility [patent_app_number] => 17/748768 [patent_app_country] => US [patent_app_date] => 2022-05-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8391 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 428 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17748768 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/748768
GAS TURBINE ENGINE May 18, 2022 Pending
Array ( [id] => 18786767 [patent_doc_number] => 20230374944 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-11-23 [patent_title] => SYSTEMS AND METHODS OF DUAL-SPOOL POWER MANAGEMENT [patent_app_type] => utility [patent_app_number] => 17/749009 [patent_app_country] => US [patent_app_date] => 2022-05-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7177 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [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] => 17749009 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/749009
SYSTEMS AND METHODS OF DUAL-SPOOL POWER MANAGEMENT May 18, 2022 Pending
Array ( [id] => 18650417 [patent_doc_number] => 20230296250 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-09-21 [patent_title] => TURBINE ENGINE COMBUSTOR AND COMBUSTOR LINER [patent_app_type] => utility [patent_app_number] => 17/740443 [patent_app_country] => US [patent_app_date] => 2022-05-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9684 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 178 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17740443 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/740443
TURBINE ENGINE COMBUSTOR AND COMBUSTOR LINER May 9, 2022 Pending
Array ( [id] => 18754750 [patent_doc_number] => 20230358176 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-11-09 [patent_title] => TRANSMISSION AND METHOD FOR CONTROL OF BOOST SPOOL [patent_app_type] => utility [patent_app_number] => 17/662204 [patent_app_country] => US [patent_app_date] => 2022-05-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9115 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 178 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17662204 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/662204
Transmission and method for control of boost spool May 4, 2022 Issued
Array ( [id] => 17990807 [patent_doc_number] => 20220356844 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-11-10 [patent_title] => HEAT EXCHANGE DEVICE AND AIRCRAFT TURBINE ENGINE WITH THE DEVICE [patent_app_type] => utility [patent_app_number] => 17/736800 [patent_app_country] => US [patent_app_date] => 2022-05-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2747 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 50 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17736800 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/736800
HEAT EXCHANGE DEVICE AND AIRCRAFT TURBINE ENGINE WITH THE DEVICE May 3, 2022 Pending
Array ( [id] => 18452548 [patent_doc_number] => 20230193827 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-06-22 [patent_title] => FAN CASE ASSEMBLY FOR A GAS TURBINE ENGINE [patent_app_type] => utility [patent_app_number] => 17/721764 [patent_app_country] => US [patent_app_date] => 2022-04-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9091 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 67 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17721764 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/721764
FAN CASE ASSEMBLY FOR A GAS TURBINE ENGINE Apr 14, 2022 Pending
Array ( [id] => 19060930 [patent_doc_number] => 11940151 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-03-26 [patent_title] => Combustor with baffle [patent_app_type] => utility [patent_app_number] => 17/694978 [patent_app_country] => US [patent_app_date] => 2022-03-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 13 [patent_no_of_words] => 6899 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 192 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17694978 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/694978
Combustor with baffle Mar 14, 2022 Issued
Array ( [id] => 18794703 [patent_doc_number] => 11828465 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-11-28 [patent_title] => Combustor fuel assembly [patent_app_type] => utility [patent_app_number] => 17/685883 [patent_app_country] => US [patent_app_date] => 2022-03-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 7623 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 286 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17685883 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/685883
Combustor fuel assembly Mar 2, 2022 Issued
Array ( [id] => 18552743 [patent_doc_number] => 20230250754 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-08-10 [patent_title] => MULTIPLE TURBOEXPANDER SYSTEM HAVING SELECTIVE COUPLER [patent_app_type] => utility [patent_app_number] => 17/666754 [patent_app_country] => US [patent_app_date] => 2022-02-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11069 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 140 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17666754 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/666754
MULTIPLE TURBOEXPANDER SYSTEM HAVING SELECTIVE COUPLER Feb 7, 2022 Pending
Array ( [id] => 19013867 [patent_doc_number] => 11920790 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-03-05 [patent_title] => Wavy annular dilution slots for lower emissions [patent_app_type] => utility [patent_app_number] => 17/649220 [patent_app_country] => US [patent_app_date] => 2022-01-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 15 [patent_no_of_words] => 11185 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 388 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17649220 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/649220
Wavy annular dilution slots for lower emissions Jan 27, 2022 Issued
Array ( [id] => 18530631 [patent_doc_number] => 20230235701 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-07-27 [patent_title] => FUEL SYSTEMS [patent_app_type] => utility [patent_app_number] => 17/581506 [patent_app_country] => US [patent_app_date] => 2022-01-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3962 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [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] => 17581506 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/581506
Fuel systems Jan 20, 2022 Issued
Array ( [id] => 18498101 [patent_doc_number] => 20230220804 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-07-13 [patent_title] => AIRCRAFT FUEL SYSTEMS WITH ELECTRIC MOTOR DRIVEN AUGMENTOR PUMPS [patent_app_type] => utility [patent_app_number] => 17/570691 [patent_app_country] => US [patent_app_date] => 2022-01-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2013 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 24 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17570691 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/570691
AIRCRAFT FUEL SYSTEMS WITH ELECTRIC MOTOR DRIVEN AUGMENTOR PUMPS Jan 6, 2022 Pending
Array ( [id] => 17564087 [patent_doc_number] => 20220128236 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-04-28 [patent_title] => PRESSURE REGULATED PISTON SEAL FOR A GAS TURBINE COMBUSTOR LINER [patent_app_type] => utility [patent_app_number] => 17/647235 [patent_app_country] => US [patent_app_date] => 2022-01-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9526 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [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] => 17647235 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/647235
PRESSURE REGULATED PISTON SEAL FOR A GAS TURBINE COMBUSTOR LINER Jan 5, 2022 Pending
Array ( [id] => 18485639 [patent_doc_number] => 20230212977 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-07-06 [patent_title] => SYSTEMS AND METHODS FOR PROVIDING OUTPUT PRODUCTS TO A COMBUSTION CHAMBER OF A GAS TURBINE ENGINE [patent_app_type] => utility [patent_app_number] => 17/568286 [patent_app_country] => US [patent_app_date] => 2022-01-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 16079 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [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] => 17568286 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/568286
Systems and methods for providing output products to a combustion chamber of a gas turbine engine Jan 3, 2022 Issued
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