C01D 7/35
Varying the content of water of crystallisation or the specific gravity
Official title: Varying the content of water of crystallisation or the specific gravity {(calcination B01J6/00, F27B)}
C01D7/35 (Varying the content of water of crystallisation or the specific gravity) appears on 41 US grants and 13 published applications in this corpus.
Search patents in C01D- Granted patents
- 41
- Published applications
- 13
- Assignees
- 22
- Inventors
- 77
- Latest grant
- 27 Aug 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 6 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 2 |
| 2002 | 2 | 0 |
| 2003 | 3 | 4 |
| 2004 | 1 | 2 |
| 2005 | 1 | 0 |
| 2006 | 2 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Method for enhancing sodium bicarbonate flowability27 Aug 2019US 10,392,257 B2Solvay SA
- Anhydrous sodium carbonate having a low pore content12 Jul 2016US 9,388,053 B2Merck Patent GmbH
- Carbon dioxide capture21 Feb 2012US 8,119,091 B2Carbon Engineering Limited Partnership
- Sodium carbonate and sodium bicarbonate production12 Aug 2008US 7,410,627 B2American Soda, LLP
- Sodium carbonate and sodium bicarbonate production from nahcolitic oil shale31 Oct 2006US 7,128,886 B2Solvay Chemicals, Inc.
- Method for Enhancing Sodium Bicarbonate Flowability23 Mar 2017US 2017/0081203 A1Solvay SA
- Anhydrous sodium carbonate having a low pore content13 Nov 2014US 2014/0336273 A1Merck Patent GmbH
- Process for producing gas from mineral ore29 Dec 2011US 2011/0318252 A1Solvay SA
- Carbon Dioxide Capture11 Feb 2010US 2010/0034724 A1Carbon Engineering Limited Partnership
- Sodium carbonate and sodium bicarbonate production8 Jun 2006US 2006/0120942 A1American Soda, LLP
Most cited
By later US patents
- Sodium carbonate and sodium bicarbonate production from nahcolitic oil shale86US 6,609,761 B1American Soda, LLP · 2003
- Production of sodium carbonate from solution mine brine59US 5,955,043 ATg Soda Ash, Inc. · 1999
- Process for producing sodium salts from brines of sodium ores57US 5,283,054 AFMC Corporation · 1994
- Method for producing alkali carbonate29US 3,975,503 AKali-Chemie Aktiengesellschaft · 1976
- Method for recovery of alkali values from trona using sequential crystallization29US 5,618,504 ASolvay Minerals, Inc. · 1997