F16L 58/00
Protection of pipes or pipe fittings against corrosion or incrustation
Official title: Protection of pipes or pipe fittings against corrosion or incrustation (compound tubes F16L9/14)
F16L58/00 (Protection of pipes or pipe fittings against corrosion or incrustation) appears on 1,564 US grants and 1,392 published applications in this corpus.
Search patents in F16L- Granted patents
- 1,564
- Published applications
- 1,392
- Assignees
- 941
- Inventors
- 3,297
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 20 | 0 |
| 1977 | 25 | 0 |
| 1978 | 20 | 0 |
| 1979 | 12 | 0 |
| 1980 | 25 | 0 |
| 1981 | 21 | 0 |
| 1982 | 12 | 0 |
| 1983 | 8 | 0 |
| 1984 | 15 | 0 |
| 1985 | 18 | 0 |
| 1986 | 18 | 0 |
| 1987 | 19 | 0 |
| 1988 | 22 | 0 |
| 1989 | 27 | 0 |
| 1990 | 21 | 0 |
| 1991 | 20 | 0 |
| 1992 | 16 | 0 |
| 1993 | 23 | 0 |
| 1994 | 30 | 0 |
| 1995 | 23 | 0 |
| 1996 | 35 | 0 |
| 1997 | 24 | 0 |
| 1998 | 27 | 0 |
| 1999 | 28 | 0 |
| 2000 | 33 | 0 |
| 2001 | 31 | 5 |
| 2002 | 14 | 16 |
| 2003 | 18 | 22 |
| 2004 | 14 | 21 |
| 2005 | 14 | 30 |
| 2006 | 11 | 23 |
| 2007 | 9 | 42 |
| 2008 | 13 | 19 |
| 2009 | 14 | 37 |
| 2010 | 21 | 51 |
| 2011 | 18 | 40 |
| 2012 | 21 | 59 |
| 2013 | 39 | 66 |
| 2014 | 35 | 65 |
| 2015 | 40 | 85 |
| 2016 | 53 | 105 |
| 2017 | 73 | 108 |
| 2018 | 85 | 92 |
| 2019 | 86 | 82 |
| 2020 | 93 | 91 |
| 2021 | 64 | 70 |
| 2022 | 58 | 61 |
| 2023 | 60 | 59 |
| 2024 | 70 | 62 |
| 2025 | 39 | 55 |
| 2026 | 29 | 26 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Anti-corrosion automatic wrapping device and method for bend pipe with polyethylene composite tape1 Sep 2026US 12,722,340 B2Hebei Hengtong Pipe Fittings Group Co.,Ltd
- Process control for a carbon capture use and storage pipeline using spectroscopy1 Sep 2026US 12,724,434 B2Halliburton Energy Services.Inc.
- Corrosion-free welding connection for reinforced thermoplastic pipes (RTP)18 Aug 2026US 12,710,118 B1Saudi Arabian Oil Company
- Low viscosity sealant to prevent corrosion under insulation4 Aug 2026US 12,698,861 B2Owens Corning Intellectual Capital, LLC
- Corrosion resistant tube and method of manufacture21 Jul 2026US 12,687,252 B2Indiana Tube Corporation
- Methods and systems for controlling iron ochre proliferation in a conduit27 Aug 2026US 2026/0249333 A1
- Oil-well metal pipe27 Aug 2026US 2026/0251256 A1Nippon Steel Corporation
- Corrosion-free welding connection for reinforced thermoplastic pipes (rtp)20 Aug 2026US 2026/0243375 A1Saudi Arabian Oil Company
- Thermoplastic polyurethane based coating composition13 Aug 2026US 2026/0234414 A1BASF SE
- Methods and systems for connecting pipes6 Aug 2026US 2026/0227011 A1Saudi Arabian Oil Company
Most cited
By later US patents
- Method of lining a pipe194US 4,009,063 AInsituform (Pipes & Structures) Ltd. · 1977
- 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