C23C 22/78
Pretreatment of the material to be coated
C23C22/78 (Pretreatment of the material to be coated) appears on 363 US grants and 429 published applications in this corpus.
Search patents in C23C- Granted patents
- 363
- Published applications
- 429
- Assignees
- 241
- Inventors
- 1,205
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 7 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 7 | 0 |
| 1991 | 7 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 6 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 6 | 2 |
| 2002 | 4 | 3 |
| 2003 | 6 | 5 |
| 2004 | 3 | 3 |
| 2005 | 3 | 8 |
| 2006 | 0 | 4 |
| 2007 | 2 | 8 |
| 2008 | 4 | 6 |
| 2009 | 0 | 12 |
| 2010 | 7 | 11 |
| 2011 | 6 | 17 |
| 2012 | 7 | 19 |
| 2013 | 8 | 11 |
| 2014 | 7 | 18 |
| 2015 | 10 | 25 |
| 2016 | 23 | 22 |
| 2017 | 17 | 33 |
| 2018 | 11 | 34 |
| 2019 | 27 | 33 |
| 2020 | 18 | 25 |
| 2021 | 15 | 28 |
| 2022 | 30 | 21 |
| 2023 | 13 | 25 |
| 2024 | 17 | 18 |
| 2025 | 17 | 19 |
| 2026 | 17 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Manufacturing method for tinplate6 Oct 2026US 12,752,324 B2Institute of Research of Iron and Steel, Jiangsu Province/Sha-Steel, Co. Ltd (Cn)
- Continuous coil pretreatment process6 Oct 2026US 12,753,515 B2Arconic Technologies LLC
- System and method of coating an automotive part with iron oxide for an electric drive unit of a vehicle29 Sep 2026US 12,747,506 B2GM Global Technology Operations LLC
- Fe-based electroplated steel sheet, electrodeposition-coated steel sheet, automotive part, method of producing electrodeposition-coated steel sheet, and method of producing Fe-based electroplated steel sheet1 Sep 2026US 12,723,319 B2Jfe Steel Corporation
- Method for coating zinc die-cast parts, multi-layered coating for the protection of zinc die-cast parts, and coated zinc die-cast part4 Aug 2026US 12,698,564 B2Fnt Co., Ltd.
- Continuous coil pretreatment process8 Oct 2026US 2026/0308766 A1Arconic Technologies LLC
- Method for the Corrosion-Protective Pretreatment of Components Comprising Surfaces of Zinc-Magnesium Hot-Dip Coated Steel8 Oct 2026US 2026/0308768 A1Henkel AG & Co. KGaA
- Method for Passivating a Metal Surface, Particularly an Aluminum Surface24 Sep 2026US 2026/0287283 A1Mahle International GmbH
- Grain-oriented electrical steel sheet and method for forming insulating coating17 Sep 2026US 2026/0279629 A1Nippon Steel Corporation
- Phosphonate-free, aqueous pickling compositions and their use27 Aug 2026US 2026/0250850 A1Chemetall GmbH
Most cited
By later US patents
- Surface conditioning prior to chemical conversion treatment of a steel member93US 7,666,266 B2Sumitomo Metal Industries, Ltd. · 2010
- Process for coating aluminum or aluminum alloy48US 3,945,899 AFuji Sashi Industries Limited · 1976
- Chromium-free conversion coating treatment of aluminum46US 5,584,946 AHenkel Kommanditgesellschaft auf Aktien · 1996
- Titanium composite materials coated with calcium phosphate compound and process for production thereof44US 5,141,576 APermelec Electrode Ltd. · 1992
- Process for the production of a titanium composite materials coated with calcium phosphate compound42US 4,882,196 APermelec Electrode Ltd. · 1989