C23F 2213/32
Pipes
C23F2213/32 (Pipes) appears on 141 US grants and 179 published applications in this corpus.
Search patents in C23F- Granted patents
- 141
- Published applications
- 179
- Assignees
- 134
- Inventors
- 348
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 3 |
| 2003 | 0 | 3 |
| 2004 | 2 | 3 |
| 2005 | 2 | 2 |
| 2006 | 2 | 1 |
| 2007 | 5 | 2 |
| 2008 | 2 | 1 |
| 2009 | 1 | 3 |
| 2010 | 1 | 9 |
| 2011 | 1 | 6 |
| 2012 | 6 | 5 |
| 2013 | 2 | 6 |
| 2014 | 7 | 5 |
| 2015 | 4 | 7 |
| 2016 | 1 | 10 |
| 2017 | 7 | 11 |
| 2018 | 4 | 14 |
| 2019 | 9 | 14 |
| 2020 | 12 | 12 |
| 2021 | 6 | 13 |
| 2022 | 10 | 6 |
| 2023 | 12 | 13 |
| 2024 | 15 | 16 |
| 2025 | 3 | 13 |
| 2026 | 6 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Test station assemblies for monitoring cathodic protection of structures and related methods18 Aug 2026US 12,709,808 B2Marathon Petroleum Company LP
- Method and inspection device for examining the cathodic protection of a ferromagnetic pipeline12 May 2026US 12,625,061 B2Rosen IP AG
- Assessment of metallic structures in contact with an electrolyte12 May 2026US 12,625,174 B2
- Method of pretreating a pipeline or apparatus17 Mar 2026US 12,576,430 B2Pig Sweep, LLC
- Models for predicting resistance trends17 Mar 2026US 12,579,445 B2Mobiltex Data Ltd.
- Apparatus for detecting corrosion rate of soil-covered storage tank after cathodic protection18 Jun 2026US 2026/0168914 A1China Construction Industrial & Energy Engineering Group Co., Ltd.
- Method and system for corrosion protection11 Dec 2025US 2025/0377286 A1Deakin University
- Autonomous underwater vehicle20 Nov 2025US 2025/0354957 A1Kawasaki Jukogyo Kabushiki Kaisha
- Systems and methods to remotely obtain pipeline potentials6 Nov 2025US 2025/0341457 A1
- Corrosion protection system9 Oct 2025US 2025/0313961 A1Corrosion Instruments Pty Ltd
Most cited
By later US patents
- Subsea clamping apparatus69US 4,705,331 AWayne Graham & Associates International, Inc. · 1987
- Cathodic protection system for metallic structures49US 7,186,321 B22007
- Cathodic lead insulator41US 7,294,913 B2Chase Corporation · 2007
- System for assessing pipeline condition39US 8,310,251 B2University of Florida Research Foundation, Inc. · 2012
- Double coupon reference cell and methods of making same36US 9,550,247 B2APS Materials, Inc. · 2017