C01B 25/2375
Fluoride or fluosilicate anion
Official title: {Fluoride or fluosilicate anion}
C01B25/2375 (Fluoride or fluosilicate anion) appears on 10 US grants and 1 published applications in this corpus.
Search patents in C01B- Granted patents
- 10
- Published applications
- 1
- Assignees
- 9
- Inventors
- 13
- Latest grant
- 26 Mar 1991
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 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 | 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 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for defluorinating wet process phosphoric acid26 Mar 1991US 5,002,744 AIMC Fertilizer, Inc.
- Manufacture of sodium tripolyphosphate from wet acid30 Jun 1987US 4,676,963 AFMC Corporation
- Process and extractant for removing fluorine compounds from aqueous phosphoric acid27 Mar 1984US 4,439,408 AYissum Research Development Company of the Hebrew University of Jerusalem
- Defluorination of wet process phosphoric acid18 May 1982US 4,330,517 AInternational Minerals & Chemical Corp.
- Method for the manufacture of defluorinated phosphatic products13 Apr 1982US 4,324,774 AFertilizer Development S.A.
Most cited
By later US patents
- Method of producing fluoride-free phosphoric acid8US 4,055,626 APennzoil Company · 1977
- Process for removing fluorine compounds from phosphoric acid4US 3,972,982 AMonsanto Company · 1976
- Recovery of fluoride values4US 4,132,765 AE. I. Du Pont de Nemours and Company · 1979
- Process and extractant for removing fluorine compounds from aqueous phosphoric acid4US 4,439,408 AYissum Research Development Company of the Hebrew University of Jerusalem · 1984
- Fluoride-free phosphate reactions3US 4,191,734 APennzoil Company · 1980