F16L 47/08
With sealing rings arranged between the outer surface of one pipe end
Official title: with sealing rings arranged between the outer surface of one pipe end and the inner surface of the sleeve or socket, the sealing rings being placed previously in the sleeve or socket
F16L47/08 (With sealing rings arranged between the outer surface of one pipe end) appears on 147 US grants and 72 published applications in this corpus.
Search patents in F16L- Granted patents
- 147
- Published applications
- 72
- Assignees
- 73
- Inventors
- 188
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 11 | 0 |
| 1978 | 6 | 0 |
| 1979 | 6 | 0 |
| 1980 | 12 | 0 |
| 1981 | 4 | 0 |
| 1982 | 9 | 0 |
| 1983 | 4 | 0 |
| 1984 | 5 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 2 |
| 2006 | 1 | 1 |
| 2007 | 1 | 2 |
| 2008 | 1 | 2 |
| 2009 | 2 | 2 |
| 2010 | 0 | 2 |
| 2011 | 0 | 4 |
| 2012 | 1 | 2 |
| 2013 | 0 | 0 |
| 2014 | 0 | 5 |
| 2015 | 2 | 2 |
| 2016 | 3 | 4 |
| 2017 | 2 | 5 |
| 2018 | 3 | 6 |
| 2019 | 4 | 6 |
| 2020 | 7 | 3 |
| 2021 | 4 | 5 |
| 2022 | 4 | 5 |
| 2023 | 3 | 5 |
| 2024 | 4 | 2 |
| 2025 | 5 | 1 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Side wall seal for piping28 Apr 2026US 12,612,990 B2Roof Goose Vent LLC
- Pipe joint insert device, pipe joint assembly, and methods of forming same7 Apr 2026US 12,595,869 B2Westlake Pipe & Fittings Corporation
- Pipe connector and an assembly of a pipe connector with at least two pipes17 Mar 2026US 12,578,041 B2Naber Holding GmbH & Co. KG
- Polymer pipe, a pipe joint insert device, a pipe joint assembly, and methods of forming same6 Jan 2026US 12,516,764 B2Westlake Pipe & Fittings Corporation
- Click fit restrained pipe joining system for plastic pipe30 Dec 2025US 12,510,201 B2S & B Technical Products, Inc.
- Side wall seal for piping30 Jul 2026US 2026/0218829 A1Roof Goose Vent LLC
- Pipe joint insert device, pipe joint assembly, and methods of forming same30 Jul 2026US 2026/0218830 A1Westlake Pipe & Fittings Corporation
- Pipe joint insert device, pipe joint assembly, and methods of forming same30 Jul 2026US 2026/0218831 A1Westlake Pipe & Fittings Corporation
- Pipe bell end reinforcing device pipe stop12 Feb 2026US 2026/0043499 A1Press-Seal Corporation
- Click Fit Restrained Pipe Joining System For Plastic Pipe23 Oct 2025US 2025/0327543 A1S & B Technical Products, Inc.
Most cited
By later US patents
- Reinforced sealing rings for pipe joints74US 4,368,894 ARieber & Son · 1983
- Pipe gasket72US 4,834,398 AS & B Technical Products, Inc. · 1989
- Production of socket ends in thermoplastic pipes63US 4,299,412 ARieber & Son A/S · 1981
- Joint for variable wall thickness conduit51US 6,176,523 B1The Lamson & Sessions Co. · 2001
- Coupling for plastic pipe50US 4,109,941 APhillips Petroleum Company · 1978