C01B 25/462
The extracting agent being alcohol or a mixture of alcohols
Official title: {the extracting agent being alcohol or a mixture of alcohols}
C01B25/462 (The extracting agent being alcohol or a mixture of alcohols) appears on 35 US grants and 1 published applications in this corpus.
Search patents in C01B- Granted patents
- 35
- Published applications
- 1
- Assignees
- 18
- Inventors
- 48
- Latest grant
- 22 Aug 2017
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 6 | 0 |
| 1981 | 3 | 0 |
| 1982 | 6 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 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 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Production of ammonium phosphates22 Aug 2017US 9,738,522 B2Easymining Sweden AB
- Purification of phosphoric acid31 Oct 1989US 4,877,594 AJ. R. Simplot Company
- Method for removing organic materials dissolved in purified phosphoric acid11 Apr 1989US 4,820,501 ATosoh Corporation
- Process for making phosphoric acid free from titanium21 Feb 1989US 4,806,324 AHoechst Aktiengesellschaft
- Process for the precipitation and separation of cadmium sulphide from the raffinates derived from phosphoric acid purification9 Aug 1988US 4,762,692 AChemische Fabrik Budenheim Rudolf A. Oetker
Most cited
By later US patents
- Membrane solvent extraction82US 3,956,112 AAllied Chemical Corporation · 1976
- Uranium recovery from wet-process phosphoric acid22US 4,180,545 ATennessee Valley Authority · 1979
- Process for separating a phosphoric acid-solvent solution8US 4,117,092 AChemishe Fabrik Budenheim · 1978
- Process for the preparation of purified phosphoric solutions from phosphoric acid8US 4,118,462 ARhone-Poulenc Industries · 1978
- Extraction7US 4,284,606 ARTL Contactor Holding S.A. · 1981