Vehicle having a cross-sectionally reduced portion
US-2026042472-A1 · Feb 12, 2026 · US
flexible, e.g. bellows
flexible, e.g. bellows · 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 | B61D17/22 |
| Official title | flexible, e.g. bellows |
| Display label | flexible, e.g. bellows |
| Total patents | 44 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 8 |
| 2020 | 4 |
| 2021 | 4 |
| 2022 | 7 |
| 2023 | 8 |
| 2024 | 2 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Treadplate for a floor of a gangway and gangway
US-12485935-B2 · Dec 2, 2025 · US
Cornerpiece of a convolute of a bellows of a gangway and method for producing such a cornerpiece
US-12448012-B2 · Oct 21, 2025 · US
Gangway with crimping element attachment for a multi-car vehicle
US-12330457-B2 · Jun 17, 2025 · US
Gangway assembly and electrical coupler assembly for a multi-car vehicle, and multi-car vehicle with the gangway assembly or electrical coupler assembly
US-2025158329-A1 · May 15, 2025 · US
Rail vehicle provided with an end wall, a doorway, and footplate catchers
US-12179810-B2 · Dec 31, 2024 · US
Nft roof crossbeam
US-2024343275-A1 · Oct 17, 2024 · US
Convolute for a bellows of a gangway and bellows of a gangway
US-2023286554-A1 · Sep 14, 2023 · US
Gangway for connecting a first car of a multi-car vehicle to a second car
US-11745772-B2 · Sep 5, 2023 · US
Controlled roof drainage via the bellows
US-11718330-B2 · Aug 8, 2023 · US
Convolute for a bellows for a gangway, bellows for a gangway and multi-car vehicle
US-2023191860-A1 · Jun 22, 2023 · US
Gangway with crimping element attachment for a multi-car vehicle
US-2023106246-A1 · Apr 6, 2023 · US
Open gangway for rail vehicle and rail vehicle having same
US-2023087632-A1 · Mar 23, 2023 · US
Flame-retardant rubber composition and outer diaphragm for rail vehicles
US-2023077643-A1 · Mar 16, 2023 · US
Convolute for a gangway, bellows, and gangway
US-2023001961-A1 · Jan 5, 2023 · US
Cornerpiece of a convolute of a bellows of a gangway and method for producing such a cornerpiece
US-2022355833-A1 · Nov 10, 2022 · US
Gangway for a multi-car vehicle and method for attaching a bellows of a gangway to an endframe of a gangway
US-11479070-B2 · Oct 25, 2022 · US
Gangway for connecting a first car of a multi-car vehicle to a second car
US-11479272-B2 · Oct 25, 2022 · US
Controlled Roof Drainage via the Bellows
US-2022204058-A1 · Jun 30, 2022 · US
Folding canopy main body, folding canopy assembly and train ihrough passage
US-11370464-B2 · Jun 28, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B61D17/22?
- CPC B61D17/22 is the Cooperative Patent Classification code for “flexible, e.g. bellows.”
- How many patents are filed under CPC B61D17/22 (flexible, e.g. bellows)?
- Our database includes 44 publications tagged with this CPC code.
- Is patent activity under CPC B61D17/22 growing?
- Publication counts under this code: 2 in 2024 vs 4 in 2025 (latest complete years).