Method for connecting a hose with a pipe socket by a pressure sleeve; pipe socket, pressure sleeve and combination of the two
US-2018356020-A1 · Dec 13, 2018 · US
with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings (F16L21/06, F16L21/08 take precedence; if adjustability is essential F16L27/00)
with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings (F16L21/06, F16L21/08 take precedence; if adjustability is essential F16L27/00) · 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 | F16L21/02 |
| Official title | with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings (F16L21/06, F16L21/08 take precedence; if adjustability is essential F16L27/00) |
| Display label | with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings (F16L21/06, F16L21/08 take precedence; if adjustability is essential F16L27/00) |
| Total patents | 215 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 19 |
| 2017 | 22 |
| 2018 | 23 |
| 2019 | 24 |
| 2020 | 22 |
| 2021 | 14 |
| 2022 | 29 |
| 2023 | 15 |
| 2024 | 15 |
| 2025 | 18 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Coupling Having Seal with Retracting Center Leg
US-2018347730-A1 · Dec 6, 2018 · US
Coupling with tongue and groove
US-2018313483-A1 · Nov 1, 2018 · US
Refining set
US-2018251942-A1 · Sep 6, 2018 · US
Seal with lip projections
US-10036494-B2 · Jul 31, 2018 · US
Pipe joint
US-10006572-B2 · Jun 26, 2018 · US
Pair of connectors
US-2018142816-A1 · May 24, 2018 · US
Fuel injection system having a fuel-carrying component, a fuel injector and a suspension
US-9957937-B2 · May 1, 2018 · US
Cooling systems for gas turbine engine components
US-9920869-B2 · Mar 20, 2018 · US
Gasket and method of producing gasket
US-9845876-B2 · Dec 19, 2017 · US
Method of producing gasket and gasket
US-9845877-B2 · Dec 19, 2017 · US
Capillary connection system
US-2017356575-A1 · Dec 14, 2017 · US
Flow path joint and liquid ejecting apparatus
US-2017341401-A1 · Nov 30, 2017 · US
Method of Preparing a Pre-Assembled Pipe Coupling
US-2017321828-A1 · Nov 9, 2017 · US
Assembly for connecting a line
US-2017307115-A1 · Oct 26, 2017 · US
Sealing device for exhaust manifold
US-2017292434-A1 · Oct 12, 2017 · US
Wellhead assembly and method
US-2017241229-A1 · Aug 24, 2017 · US
Techniques for Joining Lined Pipelines
US-2017227150-A1 · Aug 10, 2017 · US
Combination sealing member and pipe couplings
US-9726310-B2 · Aug 8, 2017 · US
Quick connect connection
US-2017219141-A1 · Aug 3, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16L21/02?
- CPC F16L21/02 is the Cooperative Patent Classification code for “with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings (F16L21/06, F16L21/08 take precedence; if adjustability is essential F16L27/00).”
- How many patents are filed under CPC F16L21/02 (with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings (F16L21/06, F16L21/08 take precedence; if adjustability is essential F16L27/00))?
- Our database includes 215 publications tagged with this CPC code.
- Is patent activity under CPC F16L21/02 growing?
- Publication counts under this code: 15 in 2024 vs 18 in 2025 (latest complete years).