F16L 9/00
Rigid pipes
F16L9/00 (Rigid pipes) appears on 2,992 US grants and 3,147 published applications in this corpus.
Search patents in F16L- Granted patents
- 2,992
- Published applications
- 3,147
- Assignees
- 1,800
- Inventors
- 6,575
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 45 | 0 |
| 1977 | 31 | 0 |
| 1978 | 37 | 0 |
| 1979 | 22 | 0 |
| 1980 | 25 | 0 |
| 1981 | 36 | 0 |
| 1982 | 27 | 0 |
| 1983 | 20 | 0 |
| 1984 | 20 | 0 |
| 1985 | 13 | 0 |
| 1986 | 18 | 0 |
| 1987 | 26 | 0 |
| 1988 | 26 | 0 |
| 1989 | 17 | 0 |
| 1990 | 30 | 0 |
| 1991 | 34 | 0 |
| 1992 | 27 | 0 |
| 1993 | 25 | 0 |
| 1994 | 23 | 0 |
| 1995 | 44 | 0 |
| 1996 | 55 | 0 |
| 1997 | 37 | 0 |
| 1998 | 69 | 0 |
| 1999 | 63 | 0 |
| 2000 | 58 | 0 |
| 2001 | 69 | 21 |
| 2002 | 46 | 64 |
| 2003 | 51 | 63 |
| 2004 | 46 | 93 |
| 2005 | 35 | 95 |
| 2006 | 35 | 85 |
| 2007 | 34 | 67 |
| 2008 | 32 | 73 |
| 2009 | 28 | 74 |
| 2010 | 42 | 101 |
| 2011 | 36 | 107 |
| 2012 | 51 | 111 |
| 2013 | 75 | 197 |
| 2014 | 99 | 204 |
| 2015 | 123 | 188 |
| 2016 | 123 | 180 |
| 2017 | 148 | 166 |
| 2018 | 152 | 193 |
| 2019 | 159 | 175 |
| 2020 | 162 | 172 |
| 2021 | 143 | 142 |
| 2022 | 113 | 147 |
| 2023 | 96 | 120 |
| 2024 | 113 | 130 |
| 2025 | 87 | 105 |
| 2026 | 66 | 74 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F16L 9/12Rigid pipes: of plastics with or without reinforcement869
- F16L 9/18Double-walled pipes645
- F16L 9/02Rigid pipes: of metal511
- F16L 9/14Compound tubes, i.e. made of materials not wholly covered by any one499
- F16L 9/22Pipes composed of a plurality of segments215
- F16L 9/16Wound from sheets or strips, with or without reinforcement201
- F16L 9/006Rigid pipes: specially profiled151
- F16L 9/003Rigid pipes: with a rectangular cross-section137
All 13 subgroupsShow fewer
- F16L 9/17Obtained by bending a sheet longitudinally and connecting the edges105
- F16L 9/08Rigid pipes: of concrete, cement, or asbestos cement, with or without reinforcement84
- F16L 9/21Made of sound-absorbing materials or with sound-absorbing structure78
- F16L 9/10Rigid pipes: of glass or ceramics45
- F16L 9/01Rigid pipes: of wood5
Recent patents
- Metallic fluid tube6 Oct 2026US 12,753,865 B2HDT Veritas Hessen GmbH
- Duplex stainless steel pipe22 Sep 2026US 12,742,233 B2Nippon Steel Corporation
- 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
- Nozzle head, cleaning system, method for cleaning and glass element25 Aug 2026US 12,716,527 B2Schott AG
- Motor vehicle pipeline and method for manufacturing a motor vehicle pipeline1 Oct 2026US 2026/0296393 A1
- High-strength stainless steel seamless pipe for oil wells24 Sep 2026US 2026/0286485 A1Jef Steel Corporation
- Highly efficient and economical fluid flat tube structure24 Sep 2026US 2026/0287092 A1
- 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
Most cited
By later US patents
- Arrangement in a pipe bundle581US 5,979,506 AAker Engineering AS · 1999
- Dual wall safety tube580US 4,653,541 AParker-Hannifin Corporation · 1987
- Guide catheter having selected flexural modulus segments472US 5,911,715 ASciMed Life Systems, Inc. · 1999
- Method of making a kink-resistant catheter405US 6,702,972 B1Diametrics Medical, Inc. · 2004
- Anisotropic hydrogels323US 8,465,771 B2The University of Western Ontario · 2013