Non-pneumatic tire having curved spokes and method of making same
US-2025033415-A1 · Jan 30, 2025 · US
for tyres; for rims
for tyres; for rims · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C21D9/34 |
| Official title | for tyres; for rims |
| Display label | for tyres; for rims |
| Total patents | 45 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 2 |
| 2017 | 6 |
| 2018 | 4 |
| 2019 | 6 |
| 2020 | 5 |
| 2021 | 2 |
| 2022 | 5 |
| 2023 | 5 |
| 2024 | 7 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Railway wheel
US-2024399789-A1 · Dec 5, 2024 · US
Spinning process of magnesium alloy wheel hub
US-12091736-B2 · Sep 17, 2024 · US
Ultra-lightweight steel wheel for commercial vehicle
US-2024270012-A1 · Aug 15, 2024 · US
Railway wheel
US-12049102-B2 · Jul 30, 2024 · US
Railway wheel
US-2024181806-A1 · Jun 6, 2024 · US
Method for manufacturing special vehicle wheels with 7000 series aluminum alloy
US-11981985-B2 · May 14, 2024 · US
Railway wheel
US-11890894-B2 · Feb 6, 2024 · US
Methods of forming magnesium-based alloys having a bimodal microstructure and magnesium-based alloy components made therefrom
US-2023383385-A1 · Nov 30, 2023 · US
Method for producing railway wheel and railway wheel
US-11761053-B2 · Sep 19, 2023 · US
Railway wheel
US-2023119875-A1 · Apr 20, 2023 · US
Spinning Process of Magnesium Alloy Wheel Hub
US-2023080640-A1 · Mar 16, 2023 · US
Method and device for producing a wheel rim
US-11577300-B2 · Feb 14, 2023 · US
Railway wheel
US-11458762-B2 · Oct 4, 2022 · US
Method for manufacturing special vehicle wheels with 7000 series aluminum alloy
US-2022307118-A1 · Sep 29, 2022 · US
Wheel disc and method of manufacturing the same
US-2022241840-A1 · Aug 4, 2022 · US
Railway wheel
US-2022032681-A1 · Feb 3, 2022 · US
Railway wheel
US-2022024247-A1 · Jan 27, 2022 · US
Method for the heat treatment of a steel reinforcement element for tires
US-11021770-B2 · Jun 1, 2021 · US
Method and device for producing a wheel rim
US-2021107052-A1 · Apr 15, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C21D9/34?
- CPC C21D9/34 is the Cooperative Patent Classification code for “for tyres; for rims.”
- How many patents are filed under CPC C21D9/34 (for tyres; for rims)?
- Our database includes 45 publications tagged with this CPC code.
- Is patent activity under CPC C21D9/34 growing?
- Publication counts under this code: 7 in 2024 vs 1 in 2025 (latest complete years).