C01B 17/507
Of iron sulfates
Official title: {of iron sulfates}
C01B17/507 (Of iron sulfates) appears on 5 US grants and 1 published applications in this corpus.
Search patents in C01B- Granted patents
- 5
- Published applications
- 1
- Assignees
- 4
- Inventors
- 9
- Latest grant
- 24 Mar 1998
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 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 |
By publication year. Applications have been published since 2001.
Recent patents
- Sulfuric acid waste recycling by regenerative process24 Mar 1998US 5,730,950 A
- Process for the thermal decomposition of metal sulphates21 Dec 1993US 5,271,919 ABayer Aktiengesellschaft
- Treatment of waste material1 Aug 1989US 4,853,206 AThe BOC Group, Inc.
- Process for the preparation of sulphur dioxide25 Apr 1989US 4,824,655 ABayer Aktiengesellschaft
- Treatment of water-soluble metal sulfate residues23 Aug 1977US 4,043,822 AAllied Chemical Corporation
Most cited
By later US patents
- Treatment of water-soluble metal sulfate residues4US 4,043,822 AAllied Chemical Corporation · 1977
- Treatment of waste material3US 4,853,206 AThe BOC Group, Inc. · 1989
- Process for the preparation of sulphur dioxide2US 4,824,655 ABayer Aktiengesellschaft · 1989
- Sulfuric acid waste recycling by regenerative process2US 5,730,950 A1998