C04B 11/032
For the wet process
Official title: for the wet process, e.g. dehydrating in solution or under saturated vapour conditions, {i.e. to obtain alpha-hemihydrate (C04B11/0281 - C04B11/0288 take precedence)}
C04B11/032 (For the wet process) appears on 13 US grants and 10 published applications in this corpus.
Search patents in C04B- Granted patents
- 13
- Published applications
- 10
- Assignees
- 8
- Inventors
- 36
- Latest grant
- 5 Dec 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 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 | 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 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 1 | 2 |
| 2010 | 1 | 1 |
| 2011 | 2 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 2 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Accelerator comprising starch, and related board, slurries, and methods5 Dec 2023US 11,834,374 B2United States Gypsum Company
- Recycling method of dihydrate gypsum from waste gypsum boards16 Mar 2021US 10,947,155 B2Tokuyama Corporation
- No fiber calcination of gypsum for gypsum fiberboard17 Jul 2018US 10,023,496 B1United States Gypsum Company
- Method of producing gypsum binder27 Mar 2018US 9,926,228 B2
- Method of forming a gypsum based product26 Jan 2016US 9,242,870 B2Saint-Gobain Placo
- Recycling method of dihydrate gypsum from waste gypsum boards23 Apr 2020US 2020/0123055 A1Tokuyama Corporation
- Accelerator comprising starch, and related board, slurries, and methods24 Oct 2019US 2019/0322584 A1United States Gypsum Company
- Method of producing gypsum binder7 Sep 2017US 2017/0253525 A1
- Method of Forming a Gypsum Based Product25 Dec 2014US 2014/0377162 A1Saint-Gobain Place SAS
- Method for the production of alpha-calcium sulfate hemihydrate from calcium sulfate dihydrate1 Jul 2010US 2010/0166640 A1Grenzebach Bsh GmbH
Most cited
By later US patents
- Method of and apparatus for producing gypsum fiber boards (plasterboard)28US 4,734,163 ABabcock-BSH GmbH · 1988
- Process for manufacturing ultra low consistency alpha- and beta- blend stucco23US 7,588,634 B2United States Gypsum Company · 2009
- Lump process alpha gypsum18US 4,309,391 AUnited States Gypsum Company · 1982
- Process for manufacturing ready-mixed setting alpha-calcium sulphate hemi-hydrate and kit for same18US 7,754,006 B2United States Gypsum Company · 2010
- Method of producing calcium sulfate alpha-hemihydrate6US 6,652,825 B2National Gypsum Properties, LLC · 2003