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] => 14020565 [patent_doc_number] => 20190072276 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-03-07 [patent_title] => FLOAT WALL COMBUSTOR PANELS HAVING HEAT TRANSFER AUGMENTATION [patent_app_type] => utility [patent_app_number] => 15/696265 [patent_app_country] => US [patent_app_date] => 2017-09-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6393 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [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] => 15696265 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/696265
FLOAT WALL COMBUSTOR PANELS HAVING HEAT TRANSFER AUGMENTATION Sep 5, 2017 Abandoned
Array ( [id] => 12233727 [patent_doc_number] => 20180066591 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-03-08 [patent_title] => 'FUEL METERING UNIT FOR TURBINE ENGINE' [patent_app_type] => utility [patent_app_number] => 15/691066 [patent_app_country] => US [patent_app_date] => 2017-08-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 5191 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [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] => 15691066 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/691066
Fuel metering unit for turbine engine Aug 29, 2017 Issued
Array ( [id] => 12219864 [patent_doc_number] => 20180058223 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-03-01 [patent_title] => 'GAS TURBINE' [patent_app_type] => utility [patent_app_number] => 15/689132 [patent_app_country] => US [patent_app_date] => 2017-08-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 5438 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 2 [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] => 15689132 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/689132
GAS TURBINE Aug 28, 2017 Abandoned
Array ( [id] => 17816274 [patent_doc_number] => 11421877 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-08-23 [patent_title] => Vibration control for a gas turbine engine [patent_app_type] => utility [patent_app_number] => 15/689460 [patent_app_country] => US [patent_app_date] => 2017-08-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 8 [patent_no_of_words] => 9008 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 124 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15689460 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/689460
Vibration control for a gas turbine engine Aug 28, 2017 Issued
Array ( [id] => 13988191 [patent_doc_number] => 20190063253 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-02-28 [patent_title] => ON-WING ENGINE FLUID SENSING AND CONTROL [patent_app_type] => utility [patent_app_number] => 15/686925 [patent_app_country] => US [patent_app_date] => 2017-08-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3852 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 47 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15686925 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/686925
ON-WING ENGINE FLUID SENSING AND CONTROL Aug 24, 2017 Abandoned
Array ( [id] => 12220123 [patent_doc_number] => 20180058483 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-03-01 [patent_title] => 'VARIABLE GEOMETRY THRUSTER' [patent_app_type] => utility [patent_app_number] => 15/685975 [patent_app_country] => US [patent_app_date] => 2017-08-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 2320 [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] => 15685975 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/685975
Variable geometry thruster Aug 23, 2017 Issued
Array ( [id] => 13988349 [patent_doc_number] => 20190063332 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-02-28 [patent_title] => SYSTEMS AND METHODS FOR NOX PREDICTION IN A POWER PLANT [patent_app_type] => utility [patent_app_number] => 15/683158 [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] => 4970 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 152 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15683158 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/683158
SYSTEMS AND METHODS FOR NOX PREDICTION IN A POWER PLANT Aug 21, 2017 Abandoned
Array ( [id] => 13959531 [patent_doc_number] => 20190056109 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-02-21 [patent_title] => MAIN FUEL NOZZLE FOR COMBUSTION DYNAMICS ATTENUATION [patent_app_type] => utility [patent_app_number] => 15/681918 [patent_app_country] => US [patent_app_date] => 2017-08-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4794 [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] => 15681918 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/681918
MAIN FUEL NOZZLE FOR COMBUSTION DYNAMICS ATTENUATION Aug 20, 2017 Abandoned
Array ( [id] => 13959541 [patent_doc_number] => 20190056114 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-02-21 [patent_title] => COMBUSTION SYSTEM AND METHOD FOR ATTENUATION OF COMBUSTION DYNAMICS IN A GAS TURBINE ENGINE [patent_app_type] => utility [patent_app_number] => 15/681875 [patent_app_country] => US [patent_app_date] => 2017-08-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7151 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 84 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15681875 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/681875
Combustion system and method for attenuation of combustion dynamics in a gas turbine engine Aug 20, 2017 Issued
Array ( [id] => 12185095 [patent_doc_number] => 20180044031 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-02-15 [patent_title] => 'TURBOFAN ENGINE COMPRISING AN OVERPRESSURE FLAP AT A FAIRING BEING LOCATED AT THE SECONDARY FLOW CHANNEL' [patent_app_type] => utility [patent_app_number] => 15/672837 [patent_app_country] => US [patent_app_date] => 2017-08-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 11 [patent_no_of_words] => 8649 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 1 [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] => 15672837 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/672837
TURBOFAN ENGINE COMPRISING AN OVERPRESSURE FLAP AT A FAIRING BEING LOCATED AT THE SECONDARY FLOW CHANNEL Aug 8, 2017 Abandoned
Array ( [id] => 13827917 [patent_doc_number] => 20190017443 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-01-17 [patent_title] => RAPIDLY AVAILABLE ELECTRIC POWER FROM A TURBINE-GENERATOR SYSTEM HAVING AN AUXILIARY POWER SOURCE [patent_app_type] => utility [patent_app_number] => 15/666012 [patent_app_country] => US [patent_app_date] => 2017-08-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6610 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 72 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15666012 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/666012
RAPIDLY AVAILABLE ELECTRIC POWER FROM A TURBINE-GENERATOR SYSTEM HAVING AN AUXILIARY POWER SOURCE Jul 31, 2017 Abandoned
Array ( [id] => 18045392 [patent_doc_number] => 11519334 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-12-06 [patent_title] => Torch igniter for a combustor [patent_app_type] => utility [patent_app_number] => 15/664025 [patent_app_country] => US [patent_app_date] => 2017-07-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 8 [patent_no_of_words] => 3932 [patent_no_of_claims] => 12 [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] => 15664025 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/664025
Torch igniter for a combustor Jul 30, 2017 Issued
Array ( [id] => 13870031 [patent_doc_number] => 20190031356 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-01-31 [patent_title] => NACELLE [patent_app_type] => utility [patent_app_number] => 15/660687 [patent_app_country] => US [patent_app_date] => 2017-07-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6209 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 176 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15660687 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/660687
Nacelle Jul 25, 2017 Issued
Array ( [id] => 14408359 [patent_doc_number] => 20190170023 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-06-06 [patent_title] => Steam and Gas Turbine Device [patent_app_type] => utility [patent_app_number] => 16/321369 [patent_app_country] => US [patent_app_date] => 2017-07-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3232 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 215 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16321369 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/321369
Steam and Gas Turbine Device Jul 25, 2017 Abandoned
Array ( [id] => 16415531 [patent_doc_number] => 10823413 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-11-03 [patent_title] => Combustion chamber assembly and a combustion chamber segment [patent_app_type] => utility [patent_app_number] => 15/658863 [patent_app_country] => US [patent_app_date] => 2017-07-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 39 [patent_no_of_words] => 17892 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 348 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15658863 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/658863
Combustion chamber assembly and a combustion chamber segment Jul 24, 2017 Issued
Array ( [id] => 13839853 [patent_doc_number] => 20190023411 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-01-24 [patent_title] => HYDROCARBON FUEL SYSTEM [patent_app_type] => utility [patent_app_number] => 15/657727 [patent_app_country] => US [patent_app_date] => 2017-07-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4076 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 133 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15657727 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/657727
HYDROCARBON FUEL SYSTEM Jul 23, 2017 Abandoned
Array ( [id] => 13827913 [patent_doc_number] => 20190017441 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-01-17 [patent_title] => GAS TURBINE ENGINE COMBUSTOR [patent_app_type] => utility [patent_app_number] => 15/651088 [patent_app_country] => US [patent_app_date] => 2017-07-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9045 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [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] => 15651088 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/651088
GAS TURBINE ENGINE COMBUSTOR Jul 16, 2017 Abandoned
Array ( [id] => 17363958 [patent_doc_number] => 11230976 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-01-25 [patent_title] => Integrated fuel nozzle connection [patent_app_type] => utility [patent_app_number] => 15/649853 [patent_app_country] => US [patent_app_date] => 2017-07-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 6 [patent_no_of_words] => 3855 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 467 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15649853 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/649853
Integrated fuel nozzle connection Jul 13, 2017 Issued
Array ( [id] => 12093225 [patent_doc_number] => 20170350318 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2017-12-07 [patent_title] => 'HYBRID COMPRESSED AIR ENERGY STORAGE SYSTEM AND PROCESS' [patent_app_type] => utility [patent_app_number] => 15/602179 [patent_app_country] => US [patent_app_date] => 2017-05-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 6826 [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] => 15602179 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/602179
HYBRID COMPRESSED AIR ENERGY STORAGE SYSTEM AND PROCESS May 22, 2017 Abandoned
Array ( [id] => 13691397 [patent_doc_number] => 20170356653 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2017-12-14 [patent_title] => COMBUSTION CHAMBER [patent_app_type] => utility [patent_app_number] => 15/599519 [patent_app_country] => US [patent_app_date] => 2017-05-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7912 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 301 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15599519 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/599519
COMBUSTION CHAMBER May 18, 2017 Abandoned
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