F16L 58/18
Protection of pipes or pipe fittings against corrosion or incrustation: specially adapted
Official title: specially adapted for pipe fittings
F16L58/18 (Protection of pipes or pipe fittings against corrosion or incrustation: specially adapted) appears on 516 US grants and 463 published applications in this corpus.
Search patents in F16L- Granted patents
- 516
- Published applications
- 463
- Assignees
- 322
- Inventors
- 983
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 4 | 0 |
| 1978 | 7 | 0 |
| 1979 | 3 | 0 |
| 1980 | 7 | 0 |
| 1981 | 8 | 0 |
| 1982 | 5 | 0 |
| 1983 | 4 | 0 |
| 1984 | 7 | 0 |
| 1985 | 10 | 0 |
| 1986 | 9 | 0 |
| 1987 | 10 | 0 |
| 1988 | 10 | 0 |
| 1989 | 12 | 0 |
| 1990 | 6 | 0 |
| 1991 | 3 | 0 |
| 1992 | 9 | 0 |
| 1993 | 8 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 5 | 0 |
| 1999 | 8 | 0 |
| 2000 | 10 | 0 |
| 2001 | 11 | 1 |
| 2002 | 5 | 4 |
| 2003 | 2 | 10 |
| 2004 | 5 | 13 |
| 2005 | 8 | 11 |
| 2006 | 4 | 6 |
| 2007 | 2 | 14 |
| 2008 | 5 | 8 |
| 2009 | 7 | 8 |
| 2010 | 6 | 18 |
| 2011 | 8 | 16 |
| 2012 | 5 | 18 |
| 2013 | 11 | 20 |
| 2014 | 13 | 26 |
| 2015 | 13 | 23 |
| 2016 | 16 | 42 |
| 2017 | 18 | 31 |
| 2018 | 33 | 30 |
| 2019 | 21 | 28 |
| 2020 | 33 | 29 |
| 2021 | 21 | 20 |
| 2022 | 26 | 21 |
| 2023 | 24 | 19 |
| 2024 | 26 | 17 |
| 2025 | 15 | 22 |
| 2026 | 8 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Corrosion-free welding connection for reinforced thermoplastic pipes (RTP)18 Aug 2026US 12,710,118 B1Saudi Arabian Oil Company
- Connector system for use in ultra-high vacuum systems2 Jun 2026US 12,644,557 B2Atlas Bimetals Labs, Inc.
- Union screw for a pipeline provided with at least one flange, in particular a brake pipe21 Apr 2026US 12,606,144 B2Cooper-Standard Automotive (Deutschland) GmbH
- Electrolytic coating for aluminum components with weld joints7 Apr 2026US 12,595,873 B2Hamilton Sundstrand Corporation
- Monitoring of lined pipeline31 Mar 2026US 12,590,665 B2Pioneer Lining Technology Limited
- Corrosion-free welding connection for reinforced thermoplastic pipes (rtp)20 Aug 2026US 2026/0243375 A1Saudi Arabian Oil Company
- Methods and systems for connecting pipes6 Aug 2026US 2026/0227011 A1Saudi Arabian Oil Company
- Compression member for a fluid transport pipe provided with an internal protective lining18 Jun 2026US 2026/0168612 A1Saipem S.P.A.
- Connection part structure, corrosion prevention system, device, and corrosion prevention method11 Jun 2026US 2026/0160377 A1Sumitomo Chemical Company, Limited
- Metal pipes with anticorrosive polyolefin covering layer4 Jun 2026US 2026/0153184 A1Winn & Coales International Limited
Most cited
By later US patents
- Corrosion resistant tube assembly172US 4,366,971 AAllegheny Ludlum Steel Corporation · 1983
- Connector for the use of pipes147US 3,997,193 AKubota Corporation · 1976
- Stainless steel liner in oil well pipe144US 4,026,583 AHydril Company · 1977
- Oil well pipe joint140US 4,630,849 ASumitomo Metal Industries, Ltd. · 1986
- Tubular article118US 5,070,597 ARaychem Corporation · 1991