C23C 22/04
Containing hexavalent chromium compounds
Official title: containing hexavalent chromium compounds
C23C22/04 (Containing hexavalent chromium compounds) appears on 7 US grants and 2 published applications in this corpus.
Search patents in C23C- Granted patents
- 7
- Published applications
- 2
- Assignees
- 5
- Inventors
- 16
- Latest grant
- 12 Nov 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Reduction of chromium waste in an aluminum conversion coat processing line12 Nov 2019US 10,472,720 B2The Boeing Company
- Reduction of chromium waste water in an aluminum conversion coat processing line20 Jun 2017US 9,683,293 B2The Boeing Company
- Surface-treated steel sheet with resin-based chemical treatment coating and process for its production27 Apr 1999US 5,897,948 ANippon Steel Corporation
- Surface preparation for bonding titanium19 Dec 1995US 5,476,552 AThe United States of America as represented by the Secretary of the Navy
- Non-aqueous degreasing and chromating solution for metal treatment7 Jul 1987US 4,678,518 ANippon Dacro Shamrock Co., Ltd.
Most cited
By later US patents
- Surface preparation for bonding titanium18US 5,476,552 AThe United States of America as represented by the Secretary of the Navy · 1995
- Surface-treated steel sheet with resin-based chemical treatment coating and process for its production9US 5,897,948 ANippon Steel Corporation · 1999
- Non-aqueous composition for chemical treatment of a metallic substrate4US 4,257,828 ANippon Paint Co., Ltd. · 1981
- Process for treating metal surface2US 4,675,054 ANippon Dacro Shamrock Co., Ltd. · 1987