C04B 22/146
Other waste ca-sulfate
Official title: {other waste Ca-sulfate}
C04B22/146 (Other waste ca-sulfate) appears on 3 US grants and 2 published applications in this corpus.
Search patents in C04B- Granted patents
- 3
- Published applications
- 2
- Assignees
- 3
- Inventors
- 5
- Latest grant
- 2 Sep 2003
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2002 | 1 | 0 |
| 2003 | 2 | 1 |
| 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 | 0 |
| 2016 | 0 | 1 |
By publication year.
Recent patents
- Recovery of cement kiln dust through precipitation of calcium sulfate using sulfuric acid solution2 Sep 2003US 6,613,141 B2
- Converting fluorgyp to calcium sulfate11 Feb 2003US 6,517,790 B1Alcoa Inc.
- Process for recycling gypsum-based waste material into readily crushable members for use in the manufacture of cement and crushable members formed thereby29 Oct 2002US 6,471,767 B1American International Materials, Ltd.
Most cited
By later US patents
- Recovery of cement kiln dust through precipitation of calcium sulfate using sulfuric acid solution29US 6,613,141 B22003
- Process for recycling gypsum-based waste material into readily crushable members for use in the manufacture of cement and crushable members formed thereby17US 6,471,767 B1American International Materials, Ltd. · 2002
- Converting fluorgyp to calcium sulfate2US 6,517,790 B1Alcoa Inc. · 2003