C23C 22/46
Containing oxalates
Official title: containing oxalates
C23C22/46 (Containing oxalates) appears on 71 US grants and 80 published applications in this corpus.
Search patents in C23C- Granted patents
- 71
- Published applications
- 80
- Assignees
- 57
- Inventors
- 205
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 2 | 4 |
| 2004 | 1 | 2 |
| 2005 | 2 | 3 |
| 2006 | 3 | 2 |
| 2007 | 0 | 2 |
| 2008 | 0 | 3 |
| 2009 | 2 | 5 |
| 2010 | 2 | 5 |
| 2011 | 5 | 6 |
| 2012 | 3 | 3 |
| 2013 | 0 | 2 |
| 2014 | 1 | 5 |
| 2015 | 4 | 4 |
| 2016 | 4 | 5 |
| 2017 | 4 | 4 |
| 2018 | 3 | 4 |
| 2019 | 3 | 2 |
| 2020 | 3 | 4 |
| 2021 | 2 | 1 |
| 2022 | 3 | 2 |
| 2023 | 3 | 7 |
| 2024 | 4 | 2 |
| 2025 | 1 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Chemical conversion treatment solution, chemical conversion treatment method in which same is used, and chemical conversion coating9 Jun 2026US 12,649,972 B2Dipsol Chemicals Co., Ltd.
- Coating agent for forming grain-oriented electrical steel sheet coating and method for manufacturing grain-oriented electrical steel sheet20 May 2025US 12,305,288 B2Nippon Steel Corporation
- Simplified method for pretreating metal substrates for cold forming and reactive lubricant therefor12 Nov 2024US 12,139,690 B2Chemetall GmbH
- Method for passivating metallic substances21 May 2024US 11,987,887 B2Ewald Dörken AG
- Method for producing chemically treated alloy material, and chemical treatment solution regeneration apparatus used in method for producing chemically treated alloy material23 Jan 2024US 11,879,172 B2Nippon Steel Corporation
- Environment-friendly water-based treatment agent for improving phosphatability of high-strength steel26 Feb 2026US 2026/0055511 A1Baoshan Iron & Steel Co., Ltd.
- Laser-induced structures for biomedical use19 Jun 2025US 2025/0196254 A1American Sterilizer Company
- Simplified process for the pretreatment of metallic substrates for cold forming and a reactive lubricant for this purpose26 Dec 2024US 2024/0425775 A1Chemetall GmbH
- One-step pretreatment method of metallic substrates at non-neutral ph values for metal cold forming23 May 2024US 2024/0166968 A1Chemetall GmbH
- Chemical conversion treatment solution, chemical conversion treatment method in which same is used, and chemical conversion coating28 Sep 2023US 2023/0304160 A1Dipsol Chemicals Co., Ltd.
Most cited
By later US patents
- Metal coloring process52US 5,723,183 ABirchwood Laboratories, Inc. · 1998
- Metal surface refinement using dense alumina-based media35US 4,818,333 ARem Chemicals, Inc. · 1989
- Chromium-free or low-chromium metal surface passivation17US 4,298,404 ARichardson Chemical Company · 1981
- Process for chromating surfaces of zinc, cadmium and alloys thereof15US 5,368,655 AAlchem, Inc. · 1994
- Metal article passivated by a bath having an organic activator and a film-forming element13US 4,444,601 ARichardson Chemical Company · 1984