PRATT & WHITNEY CANADA CORP.

Architectures for hybrid-electric propulsion

#3 | 2023-05-04 ✅ Patent 12,037,946 granted on 2024-07-16

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Dual cycle intercooled hydrogen engine architecture

#4 | 2023-02-23 ✅ Patent 12,466,288 granted on 2025-11-11

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NESTED CONTROL LOOP STRUCTURE FOR HYBRID PROPULSION SYSTEM

#5 | 2023-02-16 ✅ Patent 11,719,101 granted on 2023-08-08

US20230052410A1

Mechanical drive shaft arrangements for tail cone generators

#6 | 2023-02-16 ✅ Patent 11,746,711 granted on 2023-09-05

US20230050741A1

Pulse width modulation drive for staged fuel manifolds

#7 | 2023-02-16

US20230047326A1

CONTROL FOR ELECTRICALLY ASSISTED TURBINES

#8 | 2023-02-16 ✅ Patent 11,649,065 granted on 2023-05-16

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DC bus voltage control

#9 | 2023-02-16 ✅ Patent 11,761,381 granted on 2023-09-19

US20230045911A1

Gas turbine engine comprising liquid hydrogen evaporators and heaters

#10 | 2023-02-09 ✅ Patent 12,140,086 granted on 2024-11-12

US20230043433A1

Transient gaseous fuel flow scheduling

#11 | 2023-02-09 ✅ Patent 11,994,068 granted on 2024-05-28

US20230040971A1

Buffer heat exchangers for hydrogen engines

#12 | 2023-02-02

US20230036266A1

CONTROLLING GASEOUS FUEL FLOW

#13 | 2023-01-26

US20230022809A1

DUAL CYCLE INTERCOOLED ENGINE ARCHITECTURES

#14 | 2023-01-19 ✅ Patent 12,208,910 granted on 2025-01-28

US20230019138A1

Cooling system configurations for an aircraft having hybrid-electric propulsion system

#15 | 2022-12-15 ✅ Patent 11,846,568 granted on 2023-12-19

US20220397479A1

Leak detection for pressurized fluid systems

#16 | 2022-12-15 ✅ Patent 12,000,758 granted on 2024-06-04

US20220397478A1

Leak detection for pressurized fluid systems

#17 | 2022-12-15 ✅ Patent 11,773,781 granted on 2023-10-03

US20220397065A1

Means for handling gaseous fuel

#18 | 2022-12-15

US20220397063A1

MEANS FOR HANDLING GASEOUS FUEL

#19 | 2022-12-15 ✅ Patent 11,760,501 granted on 2023-09-19

US20220396367A1

Means for handling gaseous fuel

#20 | 2022-12-01 ✅ Patent 11,542,869 granted on 2023-01-03

US20220381183A1

Dual cycle intercooled hydrogen engine architecture

#21 | 2022-11-17 ✅ Patent 12,228,284 granted on 2025-02-18

US20220364509A1

Nozzle tip with shielded core for a dual combustion systems

#22 | 2022-11-17 ✅ Patent 11,999,509 granted on 2024-06-04

US20220363412A1

Hybrid-electric and all-electric aircraft power systems

#23 | 2022-11-03 ✅ Patent 12,092,031 granted on 2024-09-17

US20220349343A1

Sweep flow structures for fuel systems

#24 | 2022-10-13 ✅ Patent 11,808,219 granted on 2023-11-07

US20220325668A1

Fuel systems and methods for purging

#25 | 2022-09-22 ✅ Patent 12,054,274 granted on 2024-08-06

US20220297846A1

Hybrid electric systems for rotorcraft

#26 | 2022-09-22 ✅ Patent 11,926,426 granted on 2024-03-12

US20220297843A1

Electric distributed propulsion using exhaust recovery power

#27 | 2022-07-07 ✅ Patent 12,030,651 granted on 2024-07-09

US20220212807A1

Parallel hybrid power plant with hollow motor

#28 | 2022-06-16 ✅ Patent 11,453,508 granted on 2022-09-27

US20220185494A1

Circulating coolant fluid in hybrid electrical propulsion systems

#29 | 2022-05-05 ✅ Patent 11,939,073 granted on 2024-03-26

US20220135240A1

Starting methods for hybrid-electric aircraft

#30 | 2022-01-13 ✅ Patent 11,649,038 granted on 2023-05-16

US20220009615A1

Hybrid electric powerplant (HEP) control architecture

#31 | 2021-12-09 ✅ Patent 11,530,647 granted on 2022-12-20

US20210381438A1

In flight restart system and method for free turbine engine

#32 | 2021-11-18 ✅ Patent 11,794,917 granted on 2023-10-24

US20210354843A1

Parallel control loops for hybrid electric aircraft

#33 | 2021-11-18 ✅ Patent 11,827,372 granted on 2023-11-28

US20210354842A1

Engine characteristics matching

#34 | 2021-11-18 ✅ Patent 11,958,622 granted on 2024-04-16

US20210354841A1

Protection functions

#35 | 2021-11-18 ✅ Patent 11,794,916 granted on 2023-10-24

US20210354840A1

Control systems for hybrid electric power plants

#36 | 2021-09-30 ✅ Patent 12,319,400 granted on 2025-06-03

US20210300574A1

Aircraft propulsion system and methods of feathering

#37 | 2021-04-08 ✅ Patent 11,884,412 granted on 2024-01-30

US20210101691A1

Hybrid electric powerplant systems and controllers

#38 | 2021-03-04 ✅ Patent 11,912,422 granted on 2024-02-27

US20210061481A1

Hybrid electric aircraft and powerplant arrangements

#39 | 2021-01-07 ✅ Patent 11,518,143 granted on 2022-12-06

US20210001603A1

Oxidation-resistant coated superalloy

#40 | 2020-10-29 ✅ Patent 11,574,548 granted on 2023-02-07

US20200342772A1

Aircraft degraded operation ceiling increase using electric power boost

#41 | 2020-10-29 ✅ Patent 11,597,526 granted on 2023-03-07

US20200339268A1

Control systems for hybrid electric powerplants

#42 | 2020-09-03

US20200277874A1

AIRCRAFT PROPULSION SYSTEM HAVING HYBRID-ELECTRIC POWERPLANT AND COMBUSTION POWERPLANT

#43 | 2020-09-03 ✅ Patent 11,840,356 granted on 2023-12-12

US20200277081A1

Indicators for hybrid electrical powerplants

#44 | 2020-09-03

US20200277078A1

ELECTRICAL POWER SYSTEM FOR AIRCRAFT HAVING HYBRID-ELECTRIC PROPULSION SYSTEM

#45 | 2020-09-03 ✅ Patent 12,240,619 granted on 2025-03-04

US20200277073A1

Torque balancing for hybrid electric propulsion systems and aircraft utilizing hybrid electric propulsion systems

#46 | 2020-09-03 ✅ Patent 11,697,505 granted on 2023-07-11

US20200277065A1

Distributed propulsion configurations for aircraft having mixed drive systems

#47 | 2020-09-03 ✅ Patent 11,999,495 granted on 2024-06-04

US20200277064A1

Degraded mode operation of hybrid electric propulsion systems

#48 | 2020-09-03 ✅ Patent 11,713,129 granted on 2023-08-01

US20200277063A1

Normal mode operation of hybrid electric propulsion systems

#49 | 2019-03-07

US20190070830A1

Oxidation-Resistant Coated Superalloy

#50 | 2019-01-10 ✅ Patent 11,131,245 granted on 2021-09-28

US20190010874A1

In flight restart system and method for free turbine engine

#51 | 2017-12-21 ✅ Patent 10,156,154 granted on 2018-12-18

US20170362954A1

Post FBO windmilling bumper

#52 | 2017-10-19 ✅ Patent 10,753,229 granted on 2020-08-25

US20170298763A1

Mounting arrangement for mounting a fluid cooler to a gas turbine engine case

#53 | 2016-11-17

US20160333455A1

Chemistry; metallurgy

Thermal Barrier Coating with Lower Thermal Conductivity

#54 | 2016-07-28

US20160214350A1

Oxidation-Resistant Coated Superalloy

#55 | 2016-02-25 ✅ Patent 10,094,293 granted on 2018-10-09

US20160053690A1

In flight restart system and method for free turbine engine

#56 | 2016-01-07 ✅ Patent 9,267,435 granted on 2016-02-23

US20160003154A1

Support links with lockable adjustment feature

#57 | 2015-12-10 ✅ Patent 10,041,675 granted on 2018-08-07

US20150354818A1

Multiple ventilated rails for sealing of combustor heat shields

#58 | 2015-12-03 ✅ Patent 9,625,152 granted on 2017-04-18

US20150345789A1

Combustor heat shield for a gas turbine engine

#59 | 2015-12-03 ✅ Patent 9,932,832 granted on 2018-04-03

US20150345294A1

Method of balancing a spool of a gas turbine engine

#60 | 2015-11-12 ✅ Patent 9,700,986 granted on 2017-07-11

US20150321309A1

Method of machining a shroud and grinding wheel therefor

#61 | 2015-10-29 ✅ Patent 10,190,439 granted on 2019-01-29

US20150308286A1

Frangible mounting arrangement and method for providing same

#62 | 2015-10-15 ✅ Patent 9,618,927 granted on 2017-04-11

US20150292854A1

Method of determining a radius of a cutting end of a tool for a turning machine

#63 | 2015-10-15 ✅ Patent 9,382,011 granted on 2016-07-05

US20150291286A1

Multiple aircraft engine control system and method of communicating data therein

#64 | 2015-10-15 ✅ Patent 9,844,848 granted on 2017-12-19

US20150290756A1

Method of machining a part

#65 | 2015-10-01 ✅ Patent 9,533,485 granted on 2017-01-03

US20150275916A1

Compressor variable vane assembly

#66 | 2015-10-01 ✅ Patent 9,803,550 granted on 2017-10-31

US20150275764A1

Shaft assembly of a gas turbine engine and method of controlling flow therein

#67 | 2015-10-01 ✅ Patent 9,597,759 granted on 2017-03-21

US20150273640A1

Positioning assembly and method

#68 | 2015-09-17 ✅ Patent 10,094,223 granted on 2018-10-09

US20150260103A1

Integrated strut and IGV configuration

#69 | 2015-09-10 ✅ Patent 10,850,863 granted on 2020-12-01

US20150251770A1

System and method for operating a multi-engine aircraft in an auxiliary power unit mode

#70 | 2015-09-03 ✅ Patent 9,683,744 granted on 2017-06-20

US20150247641A1

Combustion system for a gas turbine engine and method of operating same

#71 | 2015-09-03 ✅ Patent 9,447,894 granted on 2016-09-20

US20150247420A1

Flapper valve assembly and method of flowing air therethrough

#72 | 2015-09-03 ✅ Patent 9,650,914 granted on 2017-05-16

US20150247419A1

Turbine blade for a gas turbine engine

#73 | 2015-09-03 ✅ Patent 9,458,723 granted on 2016-10-04

US20150247407A1

Power turbine blade airfoil profile

#74 | 2015-09-03

US20150246371A1

METHOD OF COLD SPRAYING COMPONENTS OF A GAS TURBINE ENGINE MASK THEREFOR

#75 | 2015-08-27 ✅ Patent 9,804,058 granted on 2017-10-31

US20150241309A1

Method of facilitating visual detection of a crack in a component of a gas turbine engine

#76 | 2015-08-27 ✅ Patent 9,683,690 granted on 2017-06-20

US20150240976A1

Movement-constraining assembly for fluid-conveying system

#77 | 2015-08-27 ✅ Patent 9,903,275 granted on 2018-02-27

US20150240721A1

Aircraft components with porous portion and methods of making

#78 | 2015-08-27

US20150239010A1

METHOD OF FORMING AN ABRADABLE COATING FOR A GAS TURBINE ENGINE

#79 | 2015-08-13 ✅ Patent 9,803,652 granted on 2017-10-31

US20150226232A1

Centrifugal compressor diffuser and method for controlling same

#80 | 2015-08-13 ✅ Patent 9,556,741 granted on 2017-01-31

US20150226070A1

Shrouded blade for a gas turbine engine

#81 | 2015-08-06 ✅ Patent 9,938,855 granted on 2018-04-10

US20150218963A1

Cooling system and method for supplying a cooling gas flow

#82 | 2015-08-06 ✅ Patent 9,347,136 granted on 2016-05-24

US20150218704A1

Chemistry; metallurgy

Method for applying a coating to a substrate

#83 | 2015-07-30 ✅ Patent 9,759,230 granted on 2017-09-12

US20150211546A1

Multistage axial flow compressor

#84 | 2015-07-30 ✅ Patent 9,644,639 granted on 2017-05-09

US20150211545A1

Shroud treatment for a centrifugal compressor

#85 | 2015-07-30 ✅ Patent 9,651,053 granted on 2017-05-16

US20150211540A1

Bleed valve

#86 | 2015-07-30 ✅ Patent 10,156,189 granted on 2018-12-18

US20150211420A1

Combustor igniter assembly

#87 | 2015-07-30 ✅ Patent 10,010,332 granted on 2018-07-03

US20150209054A1

Human necessities

Cutting tool and corresponding assembly

#88 | 2015-07-23 ✅ Patent 9,784,365 granted on 2017-10-10

US20150204439A1

Variable vane actuating system

#89 | 2015-07-23 ✅ Patent 9,302,369 granted on 2016-04-05

US20150202742A1

Grinding wheel and method

#90 | 2015-07-16 ✅ Patent 9,383,385 granted on 2016-07-05

US20150198627A1

System and method for speed sensor position detection in a multiple channel control system

#91 | 2015-07-16 ✅ Patent 9,797,313 granted on 2017-10-24

US20150198096A1

Internal manifold with fuel inlet

#92 | 2015-07-16 ✅ Patent 9,551,281 granted on 2017-01-24

US20150198091A1

Electric probe assembly, gas turbine engine having same and method of cooling same

#93 | 2015-07-09 ✅ Patent 9,388,741 granted on 2016-07-12

US20150192069A1

Recuperator for gas turbine engine

#94 | 2015-06-25 ✅ Patent 9,874,510 granted on 2018-01-23

US20150177116A1

Magnetic chip detector/collector

#95 | 2015-06-25 ✅ Patent 10,087,761 granted on 2018-10-02

US20150177091A1

Devices and methods for balancing a high-pressure spool of a gas turbine engine

#96 | 2015-06-25 ✅ Patent 9,464,572 granted on 2016-10-11

US20150176492A1

Oil tank and scavenge pipe assembly of a gas turbine engine and method of delivering an oil and air mixture to same

#97 | 2015-06-25 ✅ Patent 9,347,373 granted on 2016-05-24

US20150176486A1

Gas turbine engine with transmission

#98 | 2015-06-25 ✅ Patent 10,227,895 granted on 2019-03-12

US20150176432A1

Gas turbine case and reinforcement strut for same

#99 | 2015-06-25 ✅ Patent 9,777,596 granted on 2017-10-03

US20150176431A1

Double frangible bearing support

#100 | 2015-06-25 ✅ Patent 9,777,592 granted on 2017-10-03

US20150176427A1