Maglev train and moving part thereof
US-11554675-B2 · Jan 17, 2023 · US
without driven axles or wheels
without driven axles or wheels · 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 | B61F3/08 |
| Official title | without driven axles or wheels |
| Display label | without driven axles or wheels |
| Total patents | 26 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 3 |
| 2019 | 6 |
| 2020 | 4 |
| 2021 | 4 |
| 2022 | 2 |
| 2023 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Load sensing system for a railway truck assembly
US-11499862-B2 · Nov 15, 2022 · US
Vehicle guidance system
US-2022009531-A1 · Jan 13, 2022 · US
Vehicle guidance system
US-11155281-B2 · Oct 26, 2021 · US
Railroad car truck with warp restraints
US-11027755-B2 · Jun 8, 2021 · US
Railroad car truck with warp restraints
US-11008027-B2 · May 18, 2021 · US
Railroad car truck bolster
US-10913469-B2 · Feb 9, 2021 · US
Rubbing plate of side bearer of railcar bogie and side bearer
US-2020307655-A1 · Oct 1, 2020 · US
Maglev train and moving part thereof
US-2020290463-A1 · Sep 17, 2020 · US
Railcar bogie, wheel load adjusting method thereof, and wheel load adjusting system
US-10766508-B2 · Sep 8, 2020 · US
Load sensing system for a railway truck assembly
US-2020132537-A1 · Apr 30, 2020 · US
Railroad car truck bolster
US-2019185032-A1 · Jun 20, 2019 · US
Railroad car truck with warp restraints
US-2019185030-A1 · Jun 20, 2019 · US
Railroad car truck with warp restraints
US-2019168786-A1 · Jun 6, 2019 · US
Chassis for a rail vehicle
US-10300932-B2 · May 28, 2019 · US
Adjustable weight transfer system for bogie
US-10272928-B2 · Apr 30, 2019 · US
Railcar bogie, wheel load adjusting method thereof, and wheel load adjusting system
US-2019009799-A1 · Jan 10, 2019 · US
Steering bogie for railcar
US-10131368-B2 · Nov 20, 2018 · US
Vehicle guidance system
US-2018186389-A1 · Jul 5, 2018 · US
Adjustable Weight Transfer System for Bogie
US-2018170408-A1 · Jun 21, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B61F3/08?
- CPC B61F3/08 is the Cooperative Patent Classification code for “without driven axles or wheels.”
- How many patents are filed under CPC B61F3/08 (without driven axles or wheels)?
- Our database includes 26 publications tagged with this CPC code.
- Is patent activity under CPC B61F3/08 growing?
- Publication counts under this code: 2 in 2022 vs 1 in 2023 (latest complete years).