Separator and Hydraulic Accumulator Having Such a Separator
US-2025389283-A1 · Dec 25, 2025 · US
Metallic bellows
Metallic 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 | F16J3/047 |
| Official title | {Metallic bellows} |
| Display label | Metallic bellows |
| Total patents | 52 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 7 |
| 2017 | 5 |
| 2018 | 6 |
| 2019 | 5 |
| 2020 | 4 |
| 2021 | 3 |
| 2022 | 5 |
| 2023 | 2 |
| 2024 | 6 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Separator and hydraulic accumulator having such a separator
US-12404879-B2 · Sep 2, 2025 · US
Accumulator
US-2025215905-A1 · Jul 3, 2025 · US
Additive manufactured seal rotor; and method
US-12234734-B2 · Feb 25, 2025 · US
Manufacturing of Wear Resistant Coatings
US-2024410046-A1 · Dec 12, 2024 · US
Separator and Hydraulic Accumulator Having Such a Separator
US-2024271639-A1 · Aug 15, 2024 · US
Bellows with controlled shift of mean effective diameter
US-2024229932-A1 · Jul 11, 2024 · US
Additive manufactured seal rotor; and method
US-2024159159-A1 · May 16, 2024 · US
Gas turbine engine including flow path flex seal with cooling air bifurcation
US-11920487-B1 · Mar 5, 2024 · US
Integral bellows for oilfield equipment
US-11913301-B2 · Feb 27, 2024 · US
Additive manufactured seal rotor; and method
US-11821322-B2 · Nov 21, 2023 · US
Edge-welded bellows
US-11585439-B2 · Feb 21, 2023 · US
Integral bellows for oilfield equipment
US-2022325597-A1 · Oct 13, 2022 · US
Expandable turret for electrical equipment
US-11469039-B2 · Oct 11, 2022 · US
Edge-welded bellows
US-2022186832-A1 · Jun 16, 2022 · US
Additive manufactured seal rotor; and method
US-2022154590-A1 · May 19, 2022 · US
Flexible seal for gas turbine engine
US-11268477-B2 · Mar 8, 2022 · US
Expandable turret for electrical equipment
US-2021319948-A1 · Oct 14, 2021 · US
Actuator having an internal conductive path
US-10995776-B2 · May 4, 2021 · US
Flexible seal for gas turbine engine
US-2021108596-A1 · Apr 15, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16J3/047?
- CPC F16J3/047 is the Cooperative Patent Classification code for “Metallic bellows.”
- How many patents are filed under CPC F16J3/047 (Metallic bellows)?
- Our database includes 52 publications tagged with this CPC code.
- Is patent activity under CPC F16J3/047 growing?
- Publication counts under this code: 6 in 2024 vs 4 in 2025 (latest complete years).