C04B 22/144
Phosphogypsum
Official title: {Phosphogypsum}
C04B22/144 (Phosphogypsum) appears on 6 US grants and 3 published applications in this corpus.
Search patents in C04B- Granted patents
- 6
- Published applications
- 3
- Assignees
- 7
- Inventors
- 17
- Latest grant
- 20 Aug 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 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 | 0 | 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 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 1 |
| 2019 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- System and methods for removing impurities from phosphogypsum and manufacturing gypsum binders and products20 Aug 2019US 10,384,953 B2Technion Research & Development Foundation Limited
- System and methods for removing impurities from phosphogypsum and manufacturing gypsum binders and products16 Jan 2018US 9,868,647 B2Technion Research & Development Foundation Limited
- Process for the physiochemical conditioning of chemical gypsum or phospho-gypsum for use in formulation for cement and other construction materials8 Sep 2009US 7,585,485 B2Fundacion Instituto de Ingenieria para Investigacion y Desarollo Tecnologico
- Treatment of phospho gypsum16 Sep 2003US 6,620,395 B1
- Phosphogypsum composition having improved expansion properties16 Nov 1993US 5,261,957 AFreeport-McMoRan Resource Partners, Limited Partnership
- System and methods for removing impurities from phosphogypsum and manufacturing gypsum binders and products21 Jun 2018US 2018/0170766 A1Technion Research & Development Foundation Limited
- System and methods for removing impurities from phosphogypsum and manufacturing gypsum binders and products26 Jan 2017US 2017/0022070 A1Technion Research & Development Foundation Limited
- Process for the physiochemical conditioning of chemical gypsum or phospho-gypsum for use in formulation for cement and other construction materials3 Jan 2008US 2008/0003174 A1Fundacion Instituto de Ingenieria para Investigacion y Desarrollo Tecnologico
Most cited
By later US patents
- Apparatus for treating by-product gypsum to be used as an inhibitor for setting of cement3US 3,998,596 AOnoda Cement Co., Ltd. · 1976
- Phosphogypsum composition having improved expansion properties2US 5,261,957 AFreeport-McMoRan Resource Partners, Limited Partnership · 1993
- Treatment of phospho gypsum2US 6,620,395 B12003
- System and methods for removing impurities from phosphogypsum and manufacturing gypsum binders and products1US 9,868,647 B2Technion Research & Development Foundation Limited · 2018