F16L 58/02
Protection of pipes or pipe fittings against corrosion or incrustation: by means
Official title: by means of internal or external coatings
F16L58/02 (Protection of pipes or pipe fittings against corrosion or incrustation: by means) appears on 1,022 US grants and 925 published applications in this corpus.
Search patents in F16L- Granted patents
- 1,022
- Published applications
- 925
- Assignees
- 660
- Inventors
- 2,254
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 18 | 0 |
| 1978 | 12 | 0 |
| 1979 | 6 | 0 |
| 1980 | 16 | 0 |
| 1981 | 13 | 0 |
| 1982 | 7 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 8 | 0 |
| 1986 | 8 | 0 |
| 1987 | 10 | 0 |
| 1988 | 14 | 0 |
| 1989 | 17 | 0 |
| 1990 | 13 | 0 |
| 1991 | 13 | 0 |
| 1992 | 8 | 0 |
| 1993 | 15 | 0 |
| 1994 | 22 | 0 |
| 1995 | 19 | 0 |
| 1996 | 31 | 0 |
| 1997 | 19 | 0 |
| 1998 | 18 | 0 |
| 1999 | 21 | 0 |
| 2000 | 24 | 0 |
| 2001 | 21 | 4 |
| 2002 | 9 | 9 |
| 2003 | 15 | 14 |
| 2004 | 10 | 9 |
| 2005 | 6 | 25 |
| 2006 | 7 | 17 |
| 2007 | 5 | 28 |
| 2008 | 9 | 13 |
| 2009 | 12 | 30 |
| 2010 | 15 | 36 |
| 2011 | 11 | 27 |
| 2012 | 13 | 41 |
| 2013 | 32 | 49 |
| 2014 | 22 | 45 |
| 2015 | 30 | 61 |
| 2016 | 34 | 59 |
| 2017 | 50 | 65 |
| 2018 | 52 | 75 |
| 2019 | 54 | 47 |
| 2020 | 66 | 64 |
| 2021 | 40 | 47 |
| 2022 | 36 | 36 |
| 2023 | 37 | 37 |
| 2024 | 41 | 43 |
| 2025 | 25 | 29 |
| 2026 | 18 | 15 |
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
- Corrosion resistant tube and method of manufacture21 Jul 2026US 12,687,252 B2Indiana Tube Corporation
- Abrasion resistant coated tube14 Jul 2026US 12,680,629 B2Cooper-Standard Automotive Inc.
- Multilayer permeation barrier for spoolable composite pipes14 Jul 2026US 12,680,630 B2Saudi Arabian Oil Company
- Multifunctional device for removing film from pipe16 Jun 2026US 12,655,927 B2Dcseng Co., Ltd.
- Oil-well metal pipe27 Aug 2026US 2026/0251256 A1Nippon Steel Corporation
- Thermoplastic polyurethane based coating composition13 Aug 2026US 2026/0234414 A1BASF SE
- Vapor barrier element and method for use thereof30 Jul 2026US 2026/0218013 A1Evolution Mechanical Products, LLC
- A corrosion protective wrapping23 Jul 2026US 2026/0209568 A1
- Coating composition9 Jul 2026US 2026/0193490 A1The University of Melbourne
Most cited
By later US patents
- Method of lining a pipe194US 4,009,063 AInsituform (Pipes & Structures) Ltd. · 1977
- Stainless steel liner in oil well pipe144US 4,026,583 AHydril Company · 1977
- Method of rock bolting and tube-formed expansion bolt114US 4,634,317 AAtlas Copco Aktiebolag · 1987
- Dual gasket lined pipe connector113US 5,405,171 AUnion Oil Company of California · 1995
- Method for making refractory lined duct and duct formed thereby106US 5,078,822 A1992