C23F 13/00
Inhibiting corrosion of metals by anodic or cathodic protection
C23F13/00 (Inhibiting corrosion of metals by anodic or cathodic protection) appears on 1,067 US grants and 744 published applications in this corpus.
Search patents in C23F- Granted patents
- 1,067
- Published applications
- 744
- Assignees
- 641
- Inventors
- 2,086
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 18 | 0 |
| 1977 | 19 | 0 |
| 1978 | 21 | 0 |
| 1979 | 24 | 0 |
| 1980 | 24 | 0 |
| 1981 | 21 | 0 |
| 1982 | 14 | 0 |
| 1983 | 18 | 0 |
| 1984 | 27 | 0 |
| 1985 | 24 | 0 |
| 1986 | 16 | 0 |
| 1987 | 21 | 0 |
| 1988 | 13 | 0 |
| 1989 | 24 | 0 |
| 1990 | 27 | 0 |
| 1991 | 19 | 0 |
| 1992 | 15 | 0 |
| 1993 | 9 | 0 |
| 1994 | 31 | 0 |
| 1995 | 20 | 0 |
| 1996 | 19 | 0 |
| 1997 | 8 | 0 |
| 1998 | 11 | 0 |
| 1999 | 16 | 0 |
| 2000 | 10 | 0 |
| 2001 | 28 | 1 |
| 2002 | 15 | 17 |
| 2003 | 20 | 9 |
| 2004 | 13 | 28 |
| 2005 | 18 | 16 |
| 2006 | 19 | 24 |
| 2007 | 27 | 25 |
| 2008 | 22 | 24 |
| 2009 | 12 | 18 |
| 2010 | 19 | 29 |
| 2011 | 26 | 36 |
| 2012 | 25 | 23 |
| 2013 | 17 | 25 |
| 2014 | 17 | 44 |
| 2015 | 19 | 39 |
| 2016 | 25 | 35 |
| 2017 | 25 | 37 |
| 2018 | 25 | 39 |
| 2019 | 31 | 46 |
| 2020 | 43 | 45 |
| 2021 | 24 | 41 |
| 2022 | 27 | 22 |
| 2023 | 30 | 33 |
| 2024 | 34 | 41 |
| 2025 | 20 | 34 |
| 2026 | 17 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Device for the cathodic protection of metal components of boats8 Sep 2026US 12,729,444 B2
- Test station assemblies for monitoring cathodic protection of structures and related methods18 Aug 2026US 12,709,808 B2Marathon Petroleum Company LP
- Cathodic protection of a fluid end21 Jul 2026US 12,687,163 B1Caterpillar Inc.
- Methods for controlling and monitoring the degree of cathodic protection for metal structures and buried pipelines using coupled multielectrode sensors9 Jun 2026US 12,649,973 B2C2 Ventures LLC
- Methods and electric circuit arrangements for protection of metallic components from corrosion via stray currents26 May 2026US 12,636,956 B2Bender GmbH & Co. KG
- Cathodic protection system and method for oil and gas heater treater vessel1 Oct 2026US 2026/0297759 A1
- Cathodic protection systems for mitigation of corrosion under insulation and methods for preparing same24 Sep 2026US 2026/0286532 A1Saudi Arabian Oil Company
- Method and system for corrosion-resistant fastening of carbon fiber and metal structures17 Sep 2026US 2026/0275533 A1Textron Aviation Inc.
- Methods for controlling and monitoring the degree of cathodic protection for metal structures and buried pipelines using coupled multielectrode sensors17 Sep 2026US 2026/0275534 A1C2 Ventures LLC
- Alloy containing bismuth used for a sacrificial anode, and preparation process10 Sep 2026US 2026/0265871 A1Tecnoseal Foundry S.r.l.
Most cited
By later US patents
- Underground utility equipment vault1,529US 4,709,120 A1987
- Power supply for cathodic protection system78US 5,077,486 A1991
- Downhole power generation78US 6,253,847 B1Schlumberger Technology Corporation · 2001
- System for protecting gasifier surfaces from corrosion77US 8,372,251 B2General Electric Company · 2013
- Subsea clamping apparatus69US 4,705,331 AWayne Graham & Associates International, Inc. · 1987