F16L 9/127
The walls consisting of a single layer
Official title: the walls consisting of a single layer
F16L9/127 (The walls consisting of a single layer) appears on 168 US grants and 218 published applications in this corpus.
Search patents in F16L- Granted patents
- 168
- Published applications
- 218
- Assignees
- 161
- Inventors
- 509
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 4 | 1 |
| 2002 | 2 | 2 |
| 2003 | 2 | 3 |
| 2004 | 2 | 6 |
| 2005 | 3 | 4 |
| 2006 | 0 | 4 |
| 2007 | 2 | 4 |
| 2008 | 2 | 2 |
| 2009 | 2 | 3 |
| 2010 | 4 | 10 |
| 2011 | 2 | 11 |
| 2012 | 2 | 13 |
| 2013 | 4 | 10 |
| 2014 | 5 | 20 |
| 2015 | 8 | 19 |
| 2016 | 12 | 12 |
| 2017 | 10 | 11 |
| 2018 | 12 | 13 |
| 2019 | 10 | 19 |
| 2020 | 12 | 5 |
| 2021 | 11 | 6 |
| 2022 | 1 | 7 |
| 2023 | 7 | 11 |
| 2024 | 10 | 10 |
| 2025 | 6 | 9 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Nestable ducts with rings11 Aug 2026US 12,704,206 B2
- Method for producing a flexible composite pipe, and thermoplastic composite pipe4 Aug 2026US 12,697,793 B2Fibron Pipe GESMBH
- Method and device for manufacturing bent resin pipe5 May 2026US 12,617,137 B2The Yokohama Rubber Co., Ltd.
- Pipe for transport of chlorinated water28 Apr 2026US 12,612,982 B2Sabic Global Technologies B.V.
- Injection molded article3 Feb 2026US 12,539,653 B2Daikin Industries, Ltd.
- Insulation fitting23 Jul 2026US 2026/0213048 A1Georg Fischer Rohrleitungssysteme AG
- Tubes and methods of making same14 May 2026US 2026/0132869 A1Kraton Corporation
- Pipe for transport of chlorinated water19 Mar 2026US 2026/0078846 A1Sabic Global Technologies B.V.
- Pipeline member for ultrapure water and polyethylene-based resin composition for pipeline member for ultrapure water27 Nov 2025US 2025/0361407 A1Japan Polyethylene Corporation
- Polymeric pipe7 Aug 2025US 2025/0250426 A1Uponor Innovation AB
Most cited
By later US patents
- Composite waste and water transport elements and methods of manufacture for use on aircraft123US 9,458,955 B2MAG Aerospace Industries, LLC · 2016
- Thermoplastic multi-walled pipes71US 4,157,194 ATokan Kogyo Co., Ltd. · 1979
- Joining member and method of joining two conductive pieces of fiberglass reinforced plastic pipe49US 5,951,812 AA. O. Smith Corporation · 1999
- Process for the manufacture of a composition comprising ethylene polymers48US 6,225,421 B1Solvay Polyolefins Europe-Belgium (Societe Anonyme) · 2001
- High strength composite pipe structure having leakproof joints42US 4,037,626 AStandard Oil Company (Indiana) · 1977