C25D 13/20
Pretreatment
C25D13/20 (Pretreatment) appears on 207 US grants and 260 published applications in this corpus.
Search patents in C25D- Granted patents
- 207
- Published applications
- 260
- Assignees
- 154
- Inventors
- 657
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 4 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 3 |
| 2003 | 1 | 7 |
| 2004 | 3 | 8 |
| 2005 | 4 | 5 |
| 2006 | 3 | 1 |
| 2007 | 3 | 4 |
| 2008 | 4 | 14 |
| 2009 | 1 | 6 |
| 2010 | 3 | 9 |
| 2011 | 3 | 13 |
| 2012 | 8 | 11 |
| 2013 | 6 | 12 |
| 2014 | 9 | 12 |
| 2015 | 8 | 14 |
| 2016 | 12 | 23 |
| 2017 | 12 | 13 |
| 2018 | 11 | 18 |
| 2019 | 16 | 14 |
| 2020 | 14 | 10 |
| 2021 | 6 | 13 |
| 2022 | 9 | 17 |
| 2023 | 6 | 9 |
| 2024 | 5 | 15 |
| 2025 | 7 | 3 |
| 2026 | 6 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Chemical conversion coating agent, surface-treated metal and surface treatment method5 May 2026US 12,618,159 B2Nippon Paint Surf Chemicals Co., Ltd.
- Functional material and method for manufacturing the same21 Apr 2026US 12,606,927 B2Sookmyung Women's University Industry-Academic Cooperation Foundation
- Casing structure of electronic device and manufacturing method thereof24 Mar 2026US 12,584,234 B2Acer Incorporated
- Nanodiamond article and associated methods of fabrication17 Mar 2026US 12,577,697 B2Eagle Technology, LLC
- Method of producing a phosphatable part from a sheet coated with an aluminum-based coating and a zinc coating10 Mar 2026US 12,571,086 B2ArcelorMittal
- Compositions, systems, and methods for treating a substrate6 Aug 2026US 2026/0226371 A1PPG Industries Ohio, Inc.
- Method of producing a phosphatable part from a sheet coated with an aluminum-based coating and a zinc coating18 Jun 2026US 2026/0168079 A1ArcelorMittal
- Systems and methods for treating a substrate7 May 2026US 2026/0124642 A1PPG Industries Ohio, Inc.
- Sustainable coatings on conductive parts such as a magnesium-based laptop chassis26 Mar 2026US 2026/0085441 A1Intel Corporation
- Surface treatment agent, surface-treated metal, and surface treatment method26 Feb 2026US 2026/0055530 A1Nippon Paint Surf Chemicals Co., Ltd.
Most cited
By later US patents
- Surface pretreatment of metals to activate the surface for sol-gel coating70US 5,869,140 AThe Boeing Company · 1999
- Sol-gel coated metal62US 5,939,197 AThe Boeing Company · 1999
- Coated metal substrates and methods for preparing and inhibiting corrosion of the same62US 6,312,812 B1PPG Industries Ohio, Inc. · 2001
- Surface pretreatment for sol coating of metals43US 5,869,141 AThe Boeing Company · 1999
- Method of coating metal using low temperature plasma and electrodeposition34US 5,182,000 AE. I. Du Pont de Nemours and Company · 1993