C23C 22/86
Regeneration of coating baths
C23C22/86 (Regeneration of coating baths) appears on 36 US grants and 24 published applications in this corpus.
Search patents in C23C- Granted patents
- 36
- Published applications
- 24
- Assignees
- 27
- Inventors
- 125
- Latest grant
- 29 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 3 | 0 |
| 2003 | 0 | 2 |
| 2004 | 0 | 2 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 2 | 2 |
| 2016 | 2 | 1 |
| 2017 | 0 | 2 |
| 2018 | 1 | 0 |
| 2019 | 2 | 2 |
| 2020 | 0 | 3 |
| 2021 | 0 | 1 |
| 2022 | 0 | 2 |
| 2023 | 1 | 0 |
| 2024 | 1 | 0 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Acidic treatment liquid processing apparatus, acidic treatment liquid processing method, surface treatment system, and surface treatment method29 Jul 2025US 12,371,799 B2Mitsubishi Heavy Industries, Ltd.
- 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
- Systems and methods for maintaining pretreatment baths31 Jan 2023US 11,566,330 B2PPG Industries Ohio, Inc.
- Optimized process control in the anti-corrosive metal pretreatment based on fluoride-containing baths29 Oct 2019US 10,458,022 B2Henkel AG & Co. KGaA
- Method for the selective removal of zinc ions from alkaline bath solutions in the serial surface treatment of metal components15 Oct 2019US 10,443,134 B2Henkel AG & Co. KGaA
- Plating bath solutions and methods of plating9 Apr 2026US 2026/0098344 A1Surface Technology, Inc.
- Electrochemical deposition apparatus set and electrochemical deposition method2 Jun 2022US 2022/0170152 A1Boe Technology Group Co., Ltd.
- Method for operating a treatment system, treatment system, and use of a treatment system26 May 2022US 2022/0161192 A1
- Acidic treatment liquid processing apparatus, acidic treatment liquid processing method, surface treatment system, and surface treatment method4 Nov 2021US 2021/0339199 A1Mitsubishi Heavy Industries, Ltd.
- Systems and methods for maintaining pretreatment baths22 Oct 2020US 2020/0332420 A1PPG Industries Ohio, Inc.
Most cited
By later US patents
- Coating solution for metal surface90US 4,148,670 AAmchem Products, Inc. · 1979
- Method and compositions for coating aluminum71US 4,191,596 AUnion Carbide Corporation · 1980
- Coating solution for metal surfaces48US 4,370,177 AAmchem Products, Inc. · 1983
- Metal treatment22US 4,278,477 AAmchem Products, Inc. · 1981
- Composition and process for treating metal14US 5,897,716 AHenkel Corporation · 1999