C23F 2213/20
Constructional parts or assemblies of the anodic or cathodic protection apparatus
C23F2213/20 (Constructional parts or assemblies of the anodic or cathodic protection apparatus) appears on 81 US grants and 85 published applications in this corpus.
Search patents in C23F- Granted patents
- 81
- Published applications
- 85
- Assignees
- 60
- Inventors
- 168
- Latest grant
- 11 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 2 | 4 |
| 2007 | 2 | 0 |
| 2008 | 0 | 3 |
| 2009 | 0 | 3 |
| 2010 | 2 | 3 |
| 2011 | 6 | 7 |
| 2012 | 5 | 3 |
| 2013 | 5 | 4 |
| 2014 | 1 | 10 |
| 2015 | 6 | 13 |
| 2016 | 5 | 2 |
| 2017 | 6 | 6 |
| 2018 | 6 | 5 |
| 2019 | 7 | 8 |
| 2020 | 4 | 2 |
| 2021 | 2 | 3 |
| 2022 | 2 | 2 |
| 2023 | 4 | 2 |
| 2024 | 3 | 4 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Impressed current cathodic protection system and a method of operating the system11 Nov 2025US 12,467,148 B2AB Volvo Penta
- Cathodic protection system and method24 Dec 2024US 12,173,414 B2Xerox Corporation
- Corrosion protection using a sacrificial anode11 Jun 2024US RE50,006 E1Vector Corrosion Technologies Ltd.
- Corrosion protection using a sacrificial anode26 Mar 2024US RE49,882 E1Vector Corrosion Technologies Ltd.
- Cathodic corrosion protection with current limiter10 Oct 2023US 11,781,226 B2Vector Remediation Ltd.
- Anode assembly for selective corrosion protection of metal parts in concrete10 Jul 2025US 2025/0223706 A1INPROM Est.
- Cathodic corrosion protection27 Jun 2024US 2024/0209515 A1
- Electrolysis device13 Jun 2024US 2024/0191371 A1Siemens Energy Global GmbH & Co. KG
- Electrolysis device6 Jun 2024US 2024/0183045 A1Siemens Energy Global GmbH & Co. KG
- Method and apparatus for cathodic protection of steel in a concrete structure located in an ionically conductive liquid21 Mar 2024US 2024/0093461 A1
Most cited
By later US patents
- System for protecting gasifier surfaces from corrosion77US 8,372,251 B2General Electric Company · 2013
- Repair of corroded reinforcement in concrete using sacrificial anodes45US 6,022,469 AAston Material Services Limited · 2000
- Ionically conductive agent, system for cathodic protection of galvanically active metals, and method and apparatus for using same35US 5,650,060 AMinnesota Mining and Manufacturing Company · 1997
- Method of use of dual bed cathodic protection system with automatic controls32US 5,139,634 AColorado Interstate Gas Company · 1992
- Method of installing an unbonded flexible pipe28US 10,513,896 B2National Oilwell Varco Denmark I/S · 2019