Pipe joint
US-12571491-B2 · Mar 10, 2026 · US
using additional rigid rings, sealing directly on at least one pipe end, which is flared either before or during the making of the connection
using additional rigid rings, sealing directly on at least one pipe end, which is flared either before or during the making of the connection · 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 | F16L19/04 |
| Official title | using additional rigid rings, sealing directly on at least one pipe end, which is flared either before or during the making of the connection |
| Display label | using additional rigid rings, sealing directly on at least one pipe end, which is flared either before or during the making of the connection |
| Total patents | 51 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 5 |
| 2017 | 7 |
| 2018 | 3 |
| 2019 | 3 |
| 2020 | 5 |
| 2021 | 2 |
| 2022 | 7 |
| 2023 | 7 |
| 2024 | 4 |
| 2025 | 2 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Grip ring
US-12565954-B2 · Mar 3, 2026 · US
Joint pipe
US-12366311-B2 · Jul 22, 2025 · US
Grip ring
US-2025052349-A1 · Feb 13, 2025 · US
Pipe connecting system
US-12181081-B2 · Dec 31, 2024 · US
Conversion adapter and fitting with the same
US-12158223-B2 · Dec 3, 2024 · US
Pipe joint
US-2024200698-A1 · Jun 20, 2024 · US
Sleeve and fitting with the same
US-11885444-B2 · Jan 30, 2024 · US
Grip ring
US-2023392731-A1 · Dec 7, 2023 · US
Pipe fitting with grip ring
US-11774022-B2 · Oct 3, 2023 · US
Resin joint, channel block, and fluid control device
US-11708928-B2 · Jul 25, 2023 · US
Inner ring and pipe joint
US-2023175621-A1 · Jun 8, 2023 · US
Pipe connecting system
US-2023066673-A1 · Mar 2, 2023 · US
Resin joint, channel block, and fluid control device
US-2023045298-A1 · Feb 9, 2023 · US
High capacity universal connector
US-11572968-B2 · Feb 7, 2023 · US
Method of forming assembly between panel and tube
US-11512800-B2 · Nov 29, 2022 · US
Joint pipe
US-2022356971-A1 · Nov 10, 2022 · US
Hands free gasket retention mechanism
US-11441707-B2 · Sep 13, 2022 · US
Pipe fitting with grip ring
US-2022178479-A1 · Jun 9, 2022 · US
Method of forming assembly between panel and tube
US-2022057026-A1 · Feb 24, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16L19/04?
- CPC F16L19/04 is the Cooperative Patent Classification code for “using additional rigid rings, sealing directly on at least one pipe end, which is flared either before or during the making of the connection.”
- How many patents are filed under CPC F16L19/04 (using additional rigid rings, sealing directly on at least one pipe end, which is flared either before or during the making of the connection)?
- Our database includes 51 publications tagged with this CPC code.
- Is patent activity under CPC F16L19/04 growing?
- Publication counts under this code: 4 in 2024 vs 2 in 2025 (latest complete years).