F16L 23/20
Made exclusively of metal
Official title: made exclusively of metal
F16L23/20 (Made exclusively of metal) appears on 195 US grants and 173 published applications in this corpus.
Search patents in F16L- Granted patents
- 195
- Published applications
- 173
- Assignees
- 154
- Inventors
- 403
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 3 | 0 |
| 1979 | 5 | 0 |
| 1980 | 4 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 6 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 5 |
| 2003 | 5 | 5 |
| 2004 | 3 | 9 |
| 2005 | 4 | 4 |
| 2006 | 3 | 4 |
| 2007 | 0 | 5 |
| 2008 | 4 | 6 |
| 2009 | 5 | 5 |
| 2010 | 5 | 5 |
| 2011 | 1 | 8 |
| 2012 | 6 | 6 |
| 2013 | 4 | 6 |
| 2014 | 3 | 5 |
| 2015 | 7 | 9 |
| 2016 | 6 | 13 |
| 2017 | 7 | 10 |
| 2018 | 4 | 8 |
| 2019 | 6 | 7 |
| 2020 | 11 | 9 |
| 2021 | 9 | 9 |
| 2022 | 7 | 9 |
| 2023 | 9 | 6 |
| 2024 | 11 | 7 |
| 2025 | 4 | 7 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Sealing member for repairing a pipeline and method of use15 Sep 2026US 12,736,157 B2Oceaneering International, Inc.
- Flange assembly24 Mar 2026US 12,584,573 B2Schlumberger Technology Corporation
- Ring seal with trough17 Feb 2026US 12,553,518 B2Microflex Technologies LLC
- Closures for pressure vessels, and associated systems and methods27 Jan 2026US 12,537,111 B2NuScale Power, LLC
- Device for receiving and/or conducting bulk materials and/or powders with a flange connection device, and sealing element29 Jul 2025US 12,372,176 B2Gericke AG
- Injector apparatus, semiconductor processing systems including injector apparatus, and methods of depositing material layers onto workpieces using semiconductor processing systems and injector apparatus11 Jun 2026US 2026/0159948 A1ASM IP Holding B. V.
- Flange assembly19 Mar 2026US 2026/0078850 A1Schlumberger Technology Corporation
- Vacuum-insulated pipe assembly5 Feb 2026US 2026/0036245 A1Airbus Operations GmbH
- Closures for pressure vessels, and associated systems and methods8 Jan 2026US 2026/0011458 A1NuScale Power, LLC
- Closures for pressure vessels, and associated systems and methods8 Jan 2026US 2026/0011459 A1NuScale Power, LLC
Most cited
By later US patents
- Split ring seal with slip joint55US 4,759,555 AEG&G Pressure Science, Inc. · 1988
- Low friction remotely operable clamp type pipe connector53US 4,225,160 AExxon Production Research Company · 1980
- Sealing system for pressurized flanged joints52US 4,410,186 APetroleum Designers, Inc. · 1983
- Temperature resistant joint packing with E-shaped spring seal49US 4,452,462 AGray Tool Company · 1984
- Face seal assembly47US 4,998,740 ARockwell International Corporation · 1991