Flange fastening structure
US-10844984-B2 · Nov 24, 2020 · US
made exclusively of a material other than metal
made exclusively of a material other than metal · 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 | F16L23/22 |
| Official title | made exclusively of a material other than metal |
| Display label | made exclusively of a material other than metal |
| Total patents | 153 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 14 |
| 2016 | 5 |
| 2017 | 10 |
| 2018 | 12 |
| 2019 | 16 |
| 2020 | 16 |
| 2021 | 13 |
| 2022 | 18 |
| 2023 | 16 |
| 2024 | 17 |
| 2025 | 14 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Composite connectors and methods of manufacturing the same
US-2020049284-A1 · Feb 13, 2020 · US
Composite connectors and methods of manufacturing the same
US-2020049283-A1 · Feb 13, 2020 · US
Gasket-mounting structure
US-2019390772-A1 · Dec 26, 2019 · US
Gasket-mounting structure
US-2019390773-A1 · Dec 26, 2019 · US
Isolated flexible fluid connection system
US-2019383429-A1 · Dec 19, 2019 · US
Gasket-mounting structure and gasket
US-2019368609-A1 · Dec 5, 2019 · US
Gasket-mounting structure and gasket
US-2019368611-A1 · Dec 5, 2019 · US
Connected part seal structure, and seal member
US-2019301608-A1 · Oct 3, 2019 · US
Flange fastening structure
US-2019285210-A1 · Sep 19, 2019 · US
Adapter Coupling
US-2019271420-A1 · Sep 5, 2019 · US
Gasket with multiple seal rings
US-10400923-B2 · Sep 3, 2019 · US
Plastic seal fitting
US-10378686-B2 · Aug 13, 2019 · US
Metal seal fitting for in-tank transmission oil cooler
US-10344863-B2 · Jul 9, 2019 · US
Pipe joint, separation prevention member, and method of connecting pipes
US-2019137017-A1 · May 9, 2019 · US
Half-ring segment, connection clamp, and connection device
US-2019128456-A1 · May 2, 2019 · US
Metal seal fitting for in-tank transmission oil cooler
US-2019063607-A1 · Feb 28, 2019 · US
Vacuum system pipe couplings
US-10203054-B2 · Feb 12, 2019 · US
Pipe couplings
US-2019017635-A1 · Jan 17, 2019 · US
Sealing material and joint
US-2018292033-A1 · Oct 11, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16L23/22?
- CPC F16L23/22 is the Cooperative Patent Classification code for “made exclusively of a material other than metal.”
- How many patents are filed under CPC F16L23/22 (made exclusively of a material other than metal)?
- Our database includes 153 publications tagged with this CPC code.
- Is patent activity under CPC F16L23/22 growing?
- Publication counts under this code: 17 in 2024 vs 14 in 2025 (latest complete years).