C04B 22/145
Gypsum from the desulfuration of flue gases
Official title: {Gypsum from the desulfuration of flue gases}
C04B22/145 (Gypsum from the desulfuration of flue gases) appears on 4 US grants and 1 published applications in this corpus.
Search patents in C04B- Granted patents
- 4
- Published applications
- 1
- Assignees
- 4
- Inventors
- 11
- Latest grant
- 16 Mar 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 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 | 1 | 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 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Granulated blast-furnace slag activator, its manufacturing method thereof, and manufacturing method of cement16 Mar 2021US 10,947,159 B2Tangshan Polar Bear Building Materials Co., Ltd.
- 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.
- Preparation of a calcium sulfate anhydrite material of low chloride content22 Jan 1985US 4,495,162 AA/S Niro Atomizer
- Process with calcium sulfite hemihydrate in a powdery byproduct from dry flue gas desulfurization for the production of fly ash cement11 Sep 1984US 4,470,850 AL. & C. Steinm/u/ ller GmbH
Most cited
By later US patents
- 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
- Preparation of a calcium sulfate anhydrite material of low chloride content14US 4,495,162 AA/S Niro Atomizer · 1985
- Process with calcium sulfite hemihydrate in a powdery byproduct from dry flue gas desulfurization for the production of fly ash cement9US 4,470,850 AL. & C. Steinm/u/ ller GmbH · 1984