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TransDigm Group Incorporated (TDG)

NYSE: TDG · Aircraft Parts & Auxiliary Equipment, NEC · Cleveland, OH · filing with the SEC since 2003
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Patents

US patents through Dec 31, 2025 · PatentsView, from the USPTO’s Open Data Portal · read Oct 27, 2026

710 patents granted to the 92 names below, as the owner printed on each patent when it was granted. A later sale, a lapse or an expiry is not read, so this is what was granted to TransDigm Group Incorporated’s names, not what it holds today.

Patents granted
710
687 utility, 21 design, 2 reissue, 1976 to Dec 31, 2025
Granted in 2025
16
Against 19 in 2024 and 15 in 2023
Applications published
453
22 of them in 2025
Names they are printed under
92
a subsidiary
By yearGrantedApplications published
'11'12'13'14'15'16'17'18'19'20'21'22'23'24'25
Each pair is one calendar year. Applications are published about eighteen months after filing, so the newest years read low.
What they are aboutgrants since 2021
Transport24
Measurement15
Civil engineering14
Mechanical elements12
Electrical machinery, apparatus, energy8
Handling3
Basic materials chemistry3
Computer technology2
Environmental technology2
Chemical engineering2
Engines, pumps, turbines2
Digital communication1
The main technology area of each patent, in the World Intellectual Property Organization’s 35 fields.
Under which name92 counted
Hartwell Corporation a subsidiary
US, as the owner printed on each patent
121 granted
7 published
TELAIR INTERNATIONAL GMBH a subsidiary
DE, as the owner printed on each patent. 2 more under the same name are not counted (printed in US)
63 granted
35 published
Calspan Corporation a subsidiary
US, as the owner printed on each patent
91 granted
4 published
AmSafe, Inc. a subsidiary
US, as the owner printed on each patent
48 granted
21 published
WESTON AEROSPACE LIMITED a subsidiary
GB, as the owner printed on each patent
27 granted
21 published
AMSAFE BRIDPORT LIMITED a subsidiary
GB, as the owner printed on each patent
21 granted
15 published
AmSafe, Inc. a subsidiary
named as the applicant on its applications, in US
0 granted
32 published
Korry Electronics Co. a subsidiary
US, as the owner printed on each patent
20 granted
12 published
Armtec Defense Products Co. a subsidiary
US, as the owner printed on each patent
18 granted
12 published
AUXITROL S.A. a subsidiary
FR, as the owner printed on each patent
19 granted
3 published
Mason Electric Co. a subsidiary
US, as the owner printed on each patent. 2 more under the same name are not counted (printed in CA)
16 granted
5 published
CHAMPION AEROSPACE LLC a subsidiary
US, as the owner printed on each patent
10 granted
10 published
MarathonNorco Aerospace a subsidiary
US, as the owner printed on each patent
13 granted
6 published
TELAIR INTERNATIONAL GMBH a subsidiary
named as the applicant on its applications, in DE. 1 more under the same name are not counted (printed in SE)
0 granted
19 published
Adams Rite Aerospace, Inc. a subsidiary
US, as the owner printed on each patent
12 granted
6 published
Apical Industries, Inc. a subsidiary
US, as the owner printed on each patent
16 granted
2 published
HarcoSemco, LLC a subsidiary
US, as the owner printed on each patent
10 granted
8 published
LEACH INTERNATIONAL CORPORATION a subsidiary
US, as the owner printed on each patent
16 granted
2 published
Shield Restraint Systems, Inc. a subsidiary
US, as the owner printed on each patent
18 granted
0 published
HARTWELL CORPORATION a subsidiary
named as the applicant on its applications, in US
0 granted
17 published
Shield Restraint Systems, Inc. a subsidiary
named as the applicant on its applications, in US
0 granted
17 published
Young & Franklin, Inc. a subsidiary
US, as the owner printed on each patent
12 granted
5 published
Semco Instruments, Inc. a subsidiary
US, as the owner printed on each patent
16 granted
0 published
Armtec Defense Products Co. a subsidiary
named as the applicant on its applications, in US
0 granted
14 published
AIRBORNE SYSTEMS NORTH AMERICA OF NJ INC. a subsidiary
US, as the owner printed on each patent
8 granted
5 published
AVTECHTYEE INC. a subsidiary
named as the applicant on its applications, in US
0 granted
12 published
Weston Aerospace Limited a subsidiary
named as the applicant on its applications, in GB
0 granted
12 published
SCHNELLER LLC a subsidiary
US, as the owner printed on each patent
10 granted
1 published
Avionic Instruments, Inc. a subsidiary
US, as the owner printed on each patent
10 granted
0 published
Data Device Corporation a subsidiary
US, as the owner printed on each patent
4 granted
6 published
King Nutronics, LLC a subsidiary
US, as the owner printed on each patent. 1 more under the same name are not counted (printed in CA)
9 granted
1 published
MarathonNorco Aerospace, Inc. a subsidiary
named as the applicant on its applications, in US
0 granted
10 published
Mason Electric Co. a subsidiary
named as the applicant on its applications, in US
0 granted
10 published
AVTECHTYEE, INC. a subsidiary
US, as the owner printed on each patent
7 granted
1 published
CMC ELECTRONICS INC a subsidiary
CA, as the owner printed on each patent
5 granted
3 published
Schneller LLC a subsidiary
named as the applicant on its applications, in US
0 granted
8 published
Simplex Manufacturing Co. a subsidiary
named as the applicant on its applications, in US
0 granted
8 published
AEROCONTROLEX GROUP INC. a subsidiary
US, as the owner printed on each patent
6 granted
1 published
Adams Rite Aerospace, Inc. a subsidiary
named as the applicant on its applications, in US
0 granted
7 published
BREEZE-EASTERN LLC a subsidiary
named as the applicant on its applications, in US
0 granted
7 published
Simplex Manufacturing Co. a subsidiary
US, as the owner printed on each patent
6 granted
1 published
BREEZE-EASTERN LLC a subsidiary
US, as the owner printed on each patent
6 granted
0 published
Champion Aerospace LLC a subsidiary
named as the applicant on its applications, in US
0 granted
6 published
King Nutronics Corporation a subsidiary
named as the applicant on its applications, in US
0 granted
6 published
Space Electronics, Inc. a subsidiary
US, as the owner printed on each patent
5 granted
1 published
Whippany Actuation Systems LLC a subsidiary
US, as the owner printed on each patent
5 granted
1 published
AEROSONIC LLC a subsidiary
US, as the owner printed on each patent
5 granted
0 published
Aero Controlex Group Inc. a subsidiary
named as the applicant on its applications, in US
0 granted
5 published
Aerosonic Corporation a subsidiary
named as the applicant on its applications, in US
0 granted
5 published
Airborne Systems NA Inc a subsidiary
US, as the owner printed on each patent
2 granted
3 published
DUKES AEROSPACE, INC. a subsidiary
US, as the owner printed on each patent
4 granted
1 published
IRVINGQ LIMITED a subsidiary
GB, as the owner printed on each patent
3 granted
2 published
NMC GROUP, INC. a subsidiary
named as the applicant on its applications, in US
0 granted
5 published
Pneu-Draulics, Inc. a subsidiary
US, as the owner printed on each patent
5 granted
0 published
TEAC Aerospace Technologies, Inc. a subsidiary
US, as the owner printed on each patent
2 granted
3 published
AUXITROL S.A. a subsidiary
named as the applicant on its applications, in FR
0 granted
4 published
Dukes Aerospace, Inc. a subsidiary
named as the applicant on its applications, in US
0 granted
4 published
LEACH INTERNATIONAL CORPORATION a subsidiary
named as the applicant on its applications, in US
0 granted
4 published
Nordisk Aviation Products AS a subsidiary
NO, as the owner printed on each patent
4 granted
0 published
Palomar Products, Inc. a subsidiary
US, as the owner printed on each patent
3 granted
1 published
Pexco Aerospace, Inc. a subsidiary
US, as the owner printed on each patent
3 granted
1 published
Pexco Aerospace, Inc. a subsidiary
named as the applicant on its applications, in US
0 granted
4 published
TRANSICOIL LLC a subsidiary
US, as the owner printed on each patent
3 granted
1 published
Tactair Fluid Controls a subsidiary
US, as the owner printed on each patent
4 granted
0 published
AMSAFE BRIDPORT LIMITED a subsidiary
named as the applicant on its applications, in GB
0 granted
3 published
Arkwin Industries Incorporated a subsidiary
US, as the owner printed on each patent
3 granted
0 published
Avionics Specialties, Inc. a subsidiary
US, as the owner printed on each patent
3 granted
0 published
CEF Industries, LLC a subsidiary
US, as the owner printed on each patent
3 granted
0 published
Calspan SRL Corporation a subsidiary
US, as the owner printed on each patent
2 granted
1 published
HarcoSemco LLC a subsidiary
named as the applicant on its applications, in US
0 granted
3 published
Korry Electronics Co. a subsidiary
named as the applicant on its applications, in US
0 granted
3 published
LEACH INTERNATIONAL EUROPE SAS a subsidiary
FR, as the owner printed on each patent
2 granted
1 published
Whippany Actuation Systems LLC a subsidiary
named as the applicant on its applications, in US
0 granted
3 published
Bruce Aerospace Inc. a subsidiary
named as the applicant on its applications, in US
0 granted
2 published
Bruce Aerospace, Inc. a subsidiary
US, as the owner printed on each patent
1 granted
1 published
DART AEROSPACE LTD. a subsidiary
CA, as the owner printed on each patent
1 granted
1 published
Data Device Corporation a subsidiary
named as the applicant on its applications, in US
0 granted
2 published
Esterline Technologies Corporation a subsidiary
US, as the owner printed on each patent
2 granted
0 published
LEACH INTERNATIONAL EUROPE a subsidiary
named as the applicant on its applications, in FR
0 granted
2 published
Nordisk Aviation Products AS a subsidiary
named as the applicant on its applications, in NO
0 granted
2 published
TMD Technologies Limited a subsidiary
GB, as the owner printed on each patent. 1 more under the same name are not counted (printed in US)
1 granted
1 published
AIRBORNE SYSTEMS CANADA LTD. a subsidiary
CA, as the owner printed on each patent
0 granted
1 published
Acme Aerospace, Inc. a subsidiary
US, as the owner printed on each patent
1 granted
0 published
Aircraft Materials Limited a subsidiary
GB, as the owner printed on each patent
1 granted
0 published
CMC ELECTRONICS INC. a subsidiary
named as the applicant on its applications, in CA
0 granted
1 published
Darchem Engineering Ltd. a subsidiary
GB, as the owner printed on each patent
1 granted
0 published
Elektro-Metall Export GmbH a subsidiary
DE, as the owner printed on each patent
1 granted
0 published
SEI Industries Ltd. a subsidiary
CA, as the owner printed on each patent
1 granted
0 published
Sensor Concepts Incorporated a subsidiary
US, as the owner printed on each patent
1 granted
0 published
Skandia, Inc. a subsidiary
US, as the owner printed on each patent
0 granted
1 published
TA Aerospace a subsidiary
named as the applicant on its applications, in US
0 granted
1 published
Tactair Fluid Controls a subsidiary
named as the applicant on its applications, in US
0 granted
1 published
Names not counted (12)
TA Mfg Limited
Most of its patents print US; this name counts in GB. 10 granted and 0 published under it are not counted.
Pressure Systems International Ltd
Most of its patents print US; this name counts in GB. 9 granted and 0 published under it are not counted.
Airborne Systems NA Inc.
Most of its patents print GB; this name counts in US. 0 granted and 8 published under it are not counted.
Telair International GmbH
Most of its patents print SE; this name counts in DE. 6 granted and 2 published under it are not counted.
Pressure Systems International Ltd
Most of its patents print US; this name counts in GB. 0 granted and 6 published under it are not counted.
Airborne Systems NA Inc.
Most of its patents print GB; this name counts in US. 2 granted and 1 published under it are not counted.
FPT Industries LLC
Most of its patents print GB; this name counts in US. 3 granted and 0 published under it are not counted.
Chelton Limited
Most of its patents print US; this name counts in GB. 2 granted and 0 published under it are not counted.
CEF Industries, LLC
No country is printed for it. 0 granted and 1 published under it are not counted.
Heli Tech, Inc.
Most of its patents print FR; this name counts in US. 0 granted and 1 published under it are not counted.
Irvin Aerospace Limited
Most of its patents print IT; this name counts in GB. 1 granted and 0 published under it are not counted.
F.P.T. Industries Ltd.
Only generic words.
Newest grantseach row opens the USPTO’s own copy
GrantedPatentTitleFieldOwner as printed
Dec 23, 202512,503,238Fastening device for releasable connection to a perforated rail of an aircraft and method of assemblyTransportTELAIR INTERNATIONAL GMBH
Dec 2, 202512,489,279Aircraft wire harnessElectrical machinery, apparatus, energyHarcoSemco, LLC
Nov 11, 202512,466,565Parachute with canopy slits or openings for preventing canopy inversionTransportAirborne Systems NA Inc
Sep 9, 2025D1,092,476Ruggedized remote control with a display screenMason Electric Co.
Aug 19, 2025D1,088,806Aircraft latch lock keyHartwell Corporation
Jul 29, 2025D1,086,072Junction for a harnessHarcoSemco, LLC
Jul 29, 202512,372,188Fitting collar and tube-fitting assemblies incorporating fitting collarsMechanical elementsAVTECHTYEE, INC.
Jul 15, 202512,359,486Retention device for a hold open rodCivil engineeringMarathonNorco Aerospace
Jun 24, 202512,337,967Aerial delivery systemTransportIRVINGQ LIMITED
Jun 10, 202512,326,485Temperature compensation method for hall effect proximity sensorsMeasurementHarcoSemco, LLC
Newest applications publishedan application is a clue, never a plan
PublishedApplicationTitleFieldOwner as printed
Dec 4, 20252025/0367899CO-CURED MULTI-MATERIAL COMPOSITE TUBES AND COMPOSITE TUBE ASSEMBLIES INCORPORATING SUCH COMPOSITE TUBESSurface technology, coatingAVTECHTYEE INC.
Nov 20, 20252025/0354643FITTING COLLAR AND TUBE-FITTING ASSEMBLIES INCORPORATING FITTING COLLARSMechanical elementsAVTECHTYEE INC.
Nov 13, 20252025/0345832ENCLOSED AUTOMATED CLEANING SYSTEM FOR INTERNAL CAVITIES OF PRESSURE INSTRUMENTSChemical engineeringKing Nutronics Corporation
Oct 23, 20252025/0326386DEVICE FOR DIRECTION CONTROL AND DYNAMIC BRAKING OF ACTUATION APPLICATIONS AND PROCESS FOR IMPLEMENTING THE SAMETransportWhippany Actuation Systems LLC
Oct 9, 20252025/0317030AIRCRAFT PISTON ENGINE MAGNETO AND IGNITION SYSTEMElectrical machinery, apparatus, energyChampion Aerospace LLC
Oct 2, 20252025/0305534THREE PIECE COMPOSITE FITTINGOther special machinesAVTECHTYEE INC.
Sep 11, 20252025/02835053D PRINTED FITTINGS AND METHODS OF FORMING THE SAMEOther special machinesAVTECHTYEE INC.
Sep 11, 20252025/02835043D PRINTED LINKAGEMechanical elementsAVTECHTYEE INC.
Jul 31, 20252025/0242918INFLATABLE PERSONAL RESTRAINT SYSTEMSTransportAmSafe, Inc.
Jul 10, 20252025/0224278TEMPERATURE SENSOR ASSEMBLYMeasurementHarcoSemco LLC
What it applied for, 2024 to 2025: Electrical machinery, apparatus, energy 8 · Measurement 8 · Transport 7 · Civil engineering 3 · Mechanical elements 3 · Other special machines 2.

A patent is counted where the owner printed on it when it was granted carries the company’s own name, a former name, the name of a subsidiary its annual report lists, or its own name with a patent-holding phrase (Technology Licensing, Intellectual Property and the like), once the legal form, case and punctuation are set aside, and prints a country that name counts in. PatentsView’s data are published under the Creative Commons Attribution 4.0 licence. Source: PatentsView's granted patents and pre-grant publications, disambiguated, from the USPTO's Open Data Portal, through Dec 31, 2025, read Oct 27, 2026.

SI Assistanton TDG · research, not advice