
Evan H. Langdon
Examiner (ID: 2900)
| Most Active Art Unit | 3654 |
| Art Unit(s) | 3654 |
| Total Applications | 586 |
| Issued Applications | 403 |
| Pending Applications | 5 |
| Abandoned Applications | 178 |
Applications
| Application number | Title of the application | Filing Date | Status |
|---|---|---|---|
Array
(
[id] => 20426241
[patent_doc_number] => 20250388328
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2025-12-25
[patent_title] => ICE PROTECTION SYSTEMS FOR AIRCRAFT FUELED BY HYDROGEN
[patent_app_type] => utility
[patent_app_number] => 19/309195
[patent_app_country] => US
[patent_app_date] => 2025-08-25
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 7176
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -17
[patent_words_short_claim] => 28
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => publication
[pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19309195
[rel_patent_id] =>[rel_patent_doc_number] =>) 19/309195 | ICE PROTECTION SYSTEMS FOR AIRCRAFT FUELED BY HYDROGEN | Aug 24, 2025 | Pending |
Array
(
[id] => 20364706
[patent_doc_number] => 20250354518
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2025-11-20
[patent_title] => GAS TURBINE ENGINE HAVING COOLING SYSTEMS
[patent_app_type] => utility
[patent_app_number] => 19/280257
[patent_app_country] => US
[patent_app_date] => 2025-07-25
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 30473
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -17
[patent_words_short_claim] => 162
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => publication
[pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19280257
[rel_patent_id] =>[rel_patent_doc_number] =>) 19/280257 | GAS TURBINE ENGINE HAVING COOLING SYSTEMS | Jul 24, 2025 | Pending |
Array
(
[id] => 20364707
[patent_doc_number] => 20250354519
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2025-11-20
[patent_title] => GAS TURBINE ENGINE HAVING COOLING SYSTEMS
[patent_app_type] => utility
[patent_app_number] => 19/280223
[patent_app_country] => US
[patent_app_date] => 2025-07-25
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 33989
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -18
[patent_words_short_claim] => 162
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => publication
[pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19280223
[rel_patent_id] =>[rel_patent_doc_number] =>) 19/280223 | GAS TURBINE ENGINE HAVING COOLING SYSTEMS | Jul 24, 2025 | Pending |
Array
(
[id] => 20421005
[patent_doc_number] => 20250383090
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2025-12-18
[patent_title] => INJECTOR ASSEMBLY FOR AN ENGINE, AND AIRCRAFT
[patent_app_type] => utility
[patent_app_number] => 19/235235
[patent_app_country] => US
[patent_app_date] => 2025-06-11
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 0
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -14
[patent_words_short_claim] => 188
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => publication
[pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19235235
[rel_patent_id] =>[rel_patent_doc_number] =>) 19/235235 | INJECTOR ASSEMBLY FOR AN ENGINE, AND AIRCRAFT | Jun 10, 2025 | Pending |
Array
(
[id] => 20350559
[patent_doc_number] => 20250347411
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2025-11-13
[patent_title] => RAPID BULK SWIRL QUENCH ZONE FOR SUPER COMPACT COMBUSTOR
[patent_app_type] => utility
[patent_app_number] => 19/201172
[patent_app_country] => US
[patent_app_date] => 2025-05-07
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 2878
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -18
[patent_words_short_claim] => 251
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => publication
[pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19201172
[rel_patent_id] =>[rel_patent_doc_number] =>) 19/201172 | RAPID BULK SWIRL QUENCH ZONE FOR SUPER COMPACT COMBUSTOR | May 6, 2025 | Pending |
Array
(
[id] => 20220498
[patent_doc_number] => 20250283429
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2025-09-11
[patent_title] => HYDROGEN FUELLED GAS TURBINE ENGINE
[patent_app_type] => utility
[patent_app_number] => 19/050368
[patent_app_country] => US
[patent_app_date] => 2025-02-11
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 0
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -14
[patent_words_short_claim] => 137
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => publication
[pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19050368
[rel_patent_id] =>[rel_patent_doc_number] =>) 19/050368 | HYDROGEN FUELLED GAS TURBINE ENGINE | Feb 10, 2025 | Pending |
Array
(
[id] => 20060118
[patent_doc_number] => 20250198340
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2025-06-19
[patent_title] => GAS TURBINE ENGINE HEAT EXCHANGE
[patent_app_type] => utility
[patent_app_number] => 19/021605
[patent_app_country] => US
[patent_app_date] => 2025-01-15
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 35931
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -16
[patent_words_short_claim] => 286
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => publication
[pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19021605
[rel_patent_id] =>[rel_patent_doc_number] =>) 19/021605 | GAS TURBINE ENGINE HEAT EXCHANGE | Jan 14, 2025 | Pending |
Array
(
[id] => 20060117
[patent_doc_number] => 20250198339
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2025-06-19
[patent_title] => RECIRCULATION OF FUEL
[patent_app_type] => utility
[patent_app_number] => 18/986854
[patent_app_country] => US
[patent_app_date] => 2024-12-19
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 29028
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -15
[patent_words_short_claim] => 185
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => publication
[pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18986854
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/986854 | RECIRCULATION OF FUEL | Dec 18, 2024 | Pending |
Array
(
[id] => 20387080
[patent_doc_number] => 12486801
[patent_country] => US
[patent_kind] => B2
[patent_issue_date] => 2025-12-02
[patent_title] => Hydrogen steam injected turbine engine with turboexpander heat recovery
[patent_app_type] => utility
[patent_app_number] => 18/975263
[patent_app_country] => US
[patent_app_date] => 2024-12-10
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 3
[patent_figures_cnt] => 3
[patent_no_of_words] => 0
[patent_no_of_claims] => 14
[patent_no_of_ind_claims] => 3
[patent_words_short_claim] => 156
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => patent
[pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18975263
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/975263 | Hydrogen steam injected turbine engine with turboexpander heat recovery | Dec 9, 2024 | Issued |
Array
(
[id] => 20016679
[patent_doc_number] => 20250154901
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2025-05-15
[patent_title] => OPEN ROTOR NOSE CONE RAM AIR HEAT EXCHANGER WITH EXHAUST OF COOLING AIR THROUGH STATIC STRUCTURE
[patent_app_type] => utility
[patent_app_number] => 18/934682
[patent_app_country] => US
[patent_app_date] => 2024-11-01
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 0
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -17
[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] => 18934682
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/934682 | OPEN ROTOR NOSE CONE RAM AIR HEAT EXCHANGER WITH EXHAUST OF COOLING AIR THROUGH STATIC STRUCTURE | Oct 31, 2024 | Pending |
Array
(
[id] => 20136772
[patent_doc_number] => 20250243816
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2025-07-31
[patent_title] => TURBINE ENGINE HAVING AN ENGINE CORE AND A BLEED AIR CONDUIT
[patent_app_type] => utility
[patent_app_number] => 18/915727
[patent_app_country] => US
[patent_app_date] => 2024-10-15
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 10198
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -19
[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] => 18915727
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/915727 | TURBINE ENGINE HAVING AN ENGINE CORE AND A BLEED AIR CONDUIT | Oct 14, 2024 | Pending |
Array
(
[id] => 19983707
[patent_doc_number] => 20250121929
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2025-04-17
[patent_title] => PROPULSION ASSEMBLY FOR AN AIRCRAFT
[patent_app_type] => utility
[patent_app_number] => 18/909029
[patent_app_country] => US
[patent_app_date] => 2024-10-08
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 0
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -7
[patent_words_short_claim] => 183
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => publication
[pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18909029
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/909029 | PROPULSION ASSEMBLY FOR AN AIRCRAFT | Oct 7, 2024 | Pending |
Array
(
[id] => 19983705
[patent_doc_number] => 20250121927
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2025-04-17
[patent_title] => PROPULSION ASSEMBLY FOR AN AIRCRAFT
[patent_app_type] => utility
[patent_app_number] => 18/908982
[patent_app_country] => US
[patent_app_date] => 2024-10-08
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 0
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -7
[patent_words_short_claim] => 136
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => publication
[pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18908982
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/908982 | PROPULSION ASSEMBLY FOR AN AIRCRAFT | Oct 7, 2024 | Pending |
Array
(
[id] => 20122141
[patent_doc_number] => 20250237172
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2025-07-24
[patent_title] => ACOUSTIC DAMPING DEVICE
[patent_app_type] => utility
[patent_app_number] => 18/907020
[patent_app_country] => US
[patent_app_date] => 2024-10-04
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 4349
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -18
[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] => 18907020
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/907020 | ACOUSTIC DAMPING DEVICE | Oct 3, 2024 | Pending |
Array
(
[id] => 19863124
[patent_doc_number] => 20250101910
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2025-03-27
[patent_title] => LIQUID HYDROGEN PUMPING SYSTEM
[patent_app_type] => utility
[patent_app_number] => 18/894953
[patent_app_country] => US
[patent_app_date] => 2024-09-24
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 5614
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -17
[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] => 18894953
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/894953 | LIQUID HYDROGEN PUMPING SYSTEM | Sep 23, 2024 | Pending |
Array
(
[id] => 20407990
[patent_doc_number] => 20250377099
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2025-12-11
[patent_title] => AVIATION FUEL
[patent_app_type] => utility
[patent_app_number] => 18/892641
[patent_app_country] => US
[patent_app_date] => 2024-09-23
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 52569
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -18
[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] => 18892641
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/892641 | AVIATION FUEL | Sep 22, 2024 | Pending |
Array
(
[id] => 20585983
[patent_doc_number] => 20260071575
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2026-03-12
[patent_title] => PROPULSION SYSTEM INCLUDING A TURBINE ENGINE
[patent_app_type] => utility
[patent_app_number] => 18/830090
[patent_app_country] => US
[patent_app_date] => 2024-09-10
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 20210
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -18
[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] => 18830090
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/830090 | PROPULSION SYSTEM INCLUDING A TURBINE ENGINE | Sep 9, 2024 | Pending |
Array
(
[id] => 20542689
[patent_doc_number] => 20260049579
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2026-02-19
[patent_title] => BLEEDING CORE AIR FROM A TURBINE ENGINE CORE FLOWPATH
[patent_app_type] => utility
[patent_app_number] => 18/802477
[patent_app_country] => US
[patent_app_date] => 2024-08-13
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 1087
[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] => 18802477
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/802477 | BLEEDING CORE AIR FROM A TURBINE ENGINE CORE FLOWPATH | Aug 12, 2024 | Pending |
Array
(
[id] => 20151093
[patent_doc_number] => 20250250931
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2025-08-07
[patent_title] => COMPRESSOR ASSEMBLY FOR A GAS TURBINE ENGINE HAVING MULTI-STAGE BLEED EXTRACTION
[patent_app_type] => utility
[patent_app_number] => 18/800415
[patent_app_country] => US
[patent_app_date] => 2024-08-12
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 1054
[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] => 18800415
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/800415 | Compressor assembly for a gas turbine engine having multi-stage bleed extraction | Aug 11, 2024 | Issued |
Array
(
[id] => 20511984
[patent_doc_number] => 20260036085
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2026-02-05
[patent_title] => BIDIRECTIONAL PUMP FOR THERMAL MANAGEMENT SYSTEMS
[patent_app_type] => utility
[patent_app_number] => 18/792855
[patent_app_country] => US
[patent_app_date] => 2024-08-02
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 0
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -17
[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] => 18792855
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/792855 | BIDIRECTIONAL PUMP FOR THERMAL MANAGEMENT SYSTEMS | Aug 1, 2024 | Pending |