Bellows
US-10830352-B2 · Nov 10, 2020 · US
Bellows
Bellows · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F16J3/04 |
| Official title | Bellows |
| Display label | Bellows |
| Total patents | 116 |
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 | 5 |
| 2017 | 16 |
| 2018 | 17 |
| 2019 | 19 |
| 2020 | 20 |
| 2021 | 12 |
| 2022 | 6 |
| 2023 | 8 |
| 2024 | 4 |
| 2025 | 5 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Air springs with improved high temperature performance
US-10519302-B1 · Dec 31, 2019 · US
Capping assembly for inkjet printhead
US-10518536-B2 · Dec 31, 2019 · US
Bellows, and at Least One Disc Brake Having a Bellows
US-2019383338-A1 · Dec 19, 2019 · US
Bellows with grooves
US-2019346042-A1 · Nov 14, 2019 · US
Metal bellows type accumulator
US-10473123-B2 · Nov 12, 2019 · US
Metal bellows
US-10378649-B2 · Aug 13, 2019 · US
Bellows assembly and bellows for vehicles
US-2019242451-A1 · Aug 8, 2019 · US
Actuator
US-2019234229-A1 · Aug 1, 2019 · US
Dust cover
US-2019226581-A1 · Jul 25, 2019 · US
Stabilizer and assembling method therefor
US-2019202255-A1 · Jul 4, 2019 · US
Metal bellows type accumulator
US-10323746-B2 · Jun 18, 2019 · US
Brake boosting device
US-10300893-B2 · May 28, 2019 · US
Dust cover
US-2019154078-A1 · May 23, 2019 · US
Dust cover and sealing structure
US-2019085894-A1 · Mar 21, 2019 · US
Dust seal
US-10234037-B2 · Mar 19, 2019 · US
Dust Cover
US-2019078612-A1 · Mar 14, 2019 · US
Electromechanical brake system
US-2019063529-A1 · Feb 28, 2019 · US
Ball Joint For A Vehicle, In Particular For An Off-Road Vehicle
US-2019032703-A1 · Jan 31, 2019 · US
Cylinder device and cover member
US-10167919-B2 · Jan 1, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16J3/04?
- CPC F16J3/04 is the Cooperative Patent Classification code for “Bellows.”
- How many patents are filed under CPC F16J3/04 (Bellows)?
- Our database includes 116 publications tagged with this CPC code.
- Is patent activity under CPC F16J3/04 growing?
- Publication counts under this code: 4 in 2024 vs 5 in 2025 (latest complete years).