C23C 22/30
Containing also trivalent chromium
Official title: containing also trivalent chromium
C23C22/30 (Containing also trivalent chromium) appears on 39 US grants and 24 published applications in this corpus.
Search patents in C23C- Granted patents
- 39
- Published applications
- 24
- Assignees
- 34
- Inventors
- 119
- Latest grant
- 11 Feb 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 2 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 2 |
| 2015 | 2 | 0 |
| 2016 | 1 | 1 |
| 2017 | 1 | 3 |
| 2018 | 0 | 0 |
| 2019 | 2 | 1 |
| 2020 | 0 | 3 |
| 2021 | 0 | 3 |
| 2022 | 2 | 1 |
| 2023 | 3 | 2 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Surface treatment solution composition containing trivalent chromium and inorganic compound, and method for manufacturing hot dip galvanized steel sheet surface-treated using same11 Feb 2025US 12,221,702 B2Posco
- High-design sliding member17 Oct 2023US 11,788,191 B2Nissan Motor Co., Ltd.
- Corrosion-resistant trivalent-chromium chemical conversion coating and solution for trivalent-chromium chemical treatment9 May 2023US 11,643,732 B2Dipsol Chemicals Co., Ltd.
- Metallic material surface treatment agent, metallic material having surface treatment coating, and manufacturing method therefor14 Mar 2023US 11,603,592 B2Nihon Parkerizing Co., Ltd.
- Threaded connection for oil country tubular goods and method for producing threaded connection for oil country tubular goods9 Aug 2022US 11,408,550 B2Nippon Steel Corporation
- Hexavalent chromium-free water-based surface treatment solution, surface-treated metal, and surface treatment method31 Oct 2024US 2024/0360563 A1Nippon Paint Surf Chemicals Co., Ltd.
- Method for producing rust-proof member4 May 2023US 2023/0140575 A1Yuken Industry Co., Ltd.
- Conversion coating for cans containing hydrogen sulfide producing liquids6 Apr 2023US 2023/0107608 A1PPG Industries Ohio, Inc.
- Hydrophilic stainless steel and method for manufacturing same3 Nov 2022US 2022/0349062 A1Iucf-Hyu (Industry-University Cooperation Foundation Hanyang University)
- Surface treatment solution composition containing trivalent chromium and inorganic compound, and method for manufacturing hot dip galvanized steel sheet surface-treated using same16 Dec 2021US 2021/0388504 A1Posco
Most cited
By later US patents
- Coated steel sheet and method for manufacturing the same32US 6,610,422 B1NKK Corporation · 2003
- Chromate-plating bath and process for finishing zinc zinc alloy or cadmium surfaces21US 5,876,517 AAtotech Deutschland GmbH · 1999
- Highly corrosion-resistant, colored thin film-coated steel sheet having excellent press-processability and spot-weldability19US 5,059,492 ANippon Steel Corporation · 1991
- Precoated steel sheet having improved corrosion resistance and formability17US 5,141,822 ASumitomo Metal Industries, Ltd. · 1992
- Coating composition for metal16US 5,378,291 ANihon Parkerizing Co., Ltd. · 1995