C04B 28/32
Magnesium oxychloride cements
Official title: Magnesium oxychloride cements, e.g. Sorel cement
C04B28/32 (Magnesium oxychloride cements) appears on 170 US grants and 181 published applications in this corpus.
Search patents in C04B- Granted patents
- 170
- Published applications
- 181
- Assignees
- 94
- Inventors
- 284
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 4 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 5 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 1 |
| 2004 | 1 | 3 |
| 2005 | 0 | 1 |
| 2006 | 1 | 3 |
| 2007 | 1 | 7 |
| 2008 | 4 | 9 |
| 2009 | 4 | 9 |
| 2010 | 8 | 8 |
| 2011 | 5 | 8 |
| 2012 | 1 | 4 |
| 2013 | 3 | 5 |
| 2014 | 1 | 8 |
| 2015 | 4 | 3 |
| 2016 | 3 | 8 |
| 2017 | 7 | 11 |
| 2018 | 7 | 5 |
| 2019 | 13 | 16 |
| 2020 | 7 | 11 |
| 2021 | 13 | 14 |
| 2022 | 6 | 7 |
| 2023 | 9 | 11 |
| 2024 | 12 | 14 |
| 2025 | 12 | 8 |
| 2026 | 7 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Thixotropic slurry with enhanced reliability for use in a wellbore8 Sep 2026US 12,729,335 B2Halliburton Energy Services.Inc.
- Ultra stable cementitious material formulation, process for its making, and ultra stable tile backer board formulation and processes for its making1 Sep 2026US 12,726,151 B2Triton MgO Products, LLC
- Thixotropic slurry with enhanced reliability for use in a wellbore21 Jul 2026US 12,686,805 B2Halliburton Energy Services.Inc.
- Cementitious construction material containing magnesium oxychloride crystals23 Jun 2026US 12,662,427 B2Triton MgO Products, LLC
- Sorel cement with a hydrophobic modifier9 Jun 2026US 12,649,873 B1Halliburton Energy Services.Inc.
- Anti-ballistic panels made from magnesia based cement and system comprising same1 Oct 2026US 2026/0298587 A1Ubiq Technology Pty Ltd
- Carbon negative cementitious composition and building materials4 Jun 2026US 2026/0152439 A1Phytostone LLC
- Reinforced magnesium substrate and composite board with same7 May 2026US 2026/0124820 A1Oakland Global Trading Co.,Ltd.
- Magnesium oxide and wollastonite compositions, boards, and methods30 Apr 2026US 2026/0116824 A1US MgO Company, LLC
- Composite cellulosic products and processes for making and using same5 Feb 2026US 2026/0035304 A1Sierracrete LLC
Most cited
By later US patents
- Process for the manufacture of shaped fibrous products and the resultant product214US 4,613,627 AUSG Acoustical Products Company · 1986
- Fire barrier coating and fire barrier plywood136US 5,130,184 APyrotite Corporation · 1992
- Well cementing method using acid removable low density well cement compositions104US 5,213,161 AHalliburton Company · 1993
- Retarded acid soluble well cement compositions and methods81US 5,281,270 AHalliburton Company · 1994
- Retarded acid soluble well cement compositions and methods77US 5,220,960 AHalliburton Company · 1993