Thermal control systems for aircraft landing gear wheel wells and related methods
US-2021354831-A1 · Nov 18, 2021 · US
Undercarriages
Undercarriages · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B64C25/02 |
| Official title | Undercarriages |
| Display label | Undercarriages |
| Total patents | 94 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 7 |
| 2017 | 7 |
| 2018 | 8 |
| 2019 | 7 |
| 2020 | 14 |
| 2021 | 15 |
| 2022 | 8 |
| 2023 | 7 |
| 2024 | 8 |
| 2025 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Aircraft landing gear assembly
US-2021347467-A1 · Nov 11, 2021 · US
Closed-Loop Feedback Control System for Landing Gear Load Alleviation
US-2021347466-A1 · Nov 11, 2021 · US
Aircraft main landing gear drag brace backup fitting assemblies and related methods
US-11167840-B2 · Nov 9, 2021 · US
Strut for the landing gear of an aircraft
US-11104424-B2 · Aug 31, 2021 · US
Landing gear joint lubrication
US-2021261241-A1 · Aug 26, 2021 · US
Aerodynamic noise reducing thin-skin landing gear structure
US-11084574-B2 · Aug 10, 2021 · US
Hydraulic brake system
US-2021229799-A1 · Jul 29, 2021 · US
Launch and/or recovery for unmanned aircraft and/or other payloads, including via parachute-assist, and associated systems and methods
US-11066185-B2 · Jul 20, 2021 · US
Systems for harvesting rotational wheel energy for landing gear retraction
US-2021214096-A1 · Jul 15, 2021 · US
Aircraft landing gear
US-2021206477-A1 · Jul 8, 2021 · US
Aircraft landing gear assembly
US-2021009258-A1 · Jan 14, 2021 · US
Aircraft part comprising an internal module with improved attachment
US-2020407035-A1 · Dec 31, 2020 · US
Self-lubricating conductive bearing
US-2020392991-A1 · Dec 17, 2020 · US
Hydraulic actuator equipped with an end-of travel slowing device
US-2020362887-A1 · Nov 19, 2020 · US
Additively manufactured lubrication channels
US-2020354085-A1 · Nov 12, 2020 · US
Aircraft landing gear assembly
US-10829209-B2 · Nov 10, 2020 · US
Aircraft undercarriage having an onboard load-measuring device, and an aircraft
US-10816390-B2 · Oct 27, 2020 · US
Aircraft main landing gear drag brace backup fitting assemblies and related methods
US-2020331595-A1 · Oct 22, 2020 · US
Passive fluidic valve for fixed flow rate distribution
US-2020333808-A1 · Oct 22, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B64C25/02?
- CPC B64C25/02 is the Cooperative Patent Classification code for “Undercarriages.”
- How many patents are filed under CPC B64C25/02 (Undercarriages)?
- Our database includes 94 publications tagged with this CPC code.
- Is patent activity under CPC B64C25/02 growing?
- Publication counts under this code: 8 in 2024 vs 8 in 2025 (latest complete years).