F16L 9/12
Rigid pipes: of plastics with or without reinforcement
Official title: of plastics with or without reinforcement (F16L9/16 - F16L9/22 take precedence)
F16L9/12 (Rigid pipes: of plastics with or without reinforcement) appears on 869 US grants and 997 published applications in this corpus.
Search patents in F16L- Granted patents
- 869
- Published applications
- 997
- Assignees
- 577
- Inventors
- 2,078
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 5 | 0 |
| 1978 | 9 | 0 |
| 1979 | 7 | 0 |
| 1980 | 7 | 0 |
| 1981 | 5 | 0 |
| 1982 | 10 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 8 | 0 |
| 1987 | 3 | 0 |
| 1988 | 6 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 8 | 0 |
| 1992 | 8 | 0 |
| 1993 | 10 | 0 |
| 1994 | 8 | 0 |
| 1995 | 22 | 0 |
| 1996 | 15 | 0 |
| 1997 | 12 | 0 |
| 1998 | 22 | 0 |
| 1999 | 20 | 0 |
| 2000 | 21 | 0 |
| 2001 | 36 | 11 |
| 2002 | 22 | 23 |
| 2003 | 20 | 31 |
| 2004 | 15 | 45 |
| 2005 | 13 | 30 |
| 2006 | 11 | 25 |
| 2007 | 15 | 22 |
| 2008 | 7 | 23 |
| 2009 | 9 | 16 |
| 2010 | 12 | 32 |
| 2011 | 9 | 39 |
| 2012 | 17 | 36 |
| 2013 | 21 | 56 |
| 2014 | 27 | 49 |
| 2015 | 25 | 49 |
| 2016 | 27 | 59 |
| 2017 | 33 | 49 |
| 2018 | 48 | 52 |
| 2019 | 39 | 57 |
| 2020 | 43 | 45 |
| 2021 | 43 | 38 |
| 2022 | 33 | 51 |
| 2023 | 28 | 55 |
| 2024 | 40 | 39 |
| 2025 | 35 | 41 |
| 2026 | 14 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hydrogen transport, distribution and storage system, method and apparatus8 Sep 2026US 12,729,814 B2H2C Safety Pipe, Inc.
- Pipe for transporting a fluid, insulated pipe with such, and method for manufacturing a pipe1 Sep 2026US 12,723,682 B2Brugg Rohrsystem AG
- Method and apparatus for delivering fuel gas18 Aug 2026US 12,710,137 B1H2C Safety Pipe, Inc.
- 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
- High Density Polyethylene and Basalt Powder Composition and Methods Related Thereto17 Sep 2026US 2026/0276110 A1
- Thermally stable multilayer pipe17 Sep 2026US 2026/0276111 A1Engineered Profiles LLC
- Arrangement for transporting media3 Sep 2026US 2026/0258887 A1Ti Automotive Technology Center GmbH
- Tube with flame retardant layer3 Sep 2026US 2026/0258899 A1Ti Automotive (Fuldabrueck) GmbH
- Fluorine resin material, laminate, tube, and tube manufacturing method13 Aug 2026US 2026/0234388 A1Daikin Industries, Ltd.
Most cited
By later US patents
- Spoolable composite tubular member with energy conductors188US 5,913,337 AFiber Spar and Ture Corporation · 1999
- Fluoropolymer tubes and methods of making same182US 6,016,848 AW. L. Gore & Associates, Inc. · 2000
- Composite spoolable tube179US 5,921,285 AFiberspar Spoolable Products, Inc. · 1999
- Composite coiled tubing apparatus and methods167US 5,828,003 ADowell, a division of Schlumberger Technology Corporation · 1998
- Spoolable composite tubular member with energy conductors152US 5,908,049 AFiber Spar and Tube Corporation · 1999