C01G 23/024
Purification of tetrachloride
Official title: {Purification of tetrachloride}
C01G23/024 (Purification of tetrachloride) appears on 25 US grants and 30 published applications in this corpus.
Search patents in C01G- Granted patents
- 25
- Published applications
- 30
- Assignees
- 23
- Inventors
- 87
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 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 | 1 |
| 2002 | 0 | 1 |
| 2003 | 1 | 2 |
| 2004 | 1 | 0 |
| 2005 | 1 | 1 |
| 2006 | 1 | 3 |
| 2007 | 0 | 2 |
| 2008 | 1 | 2 |
| 2009 | 0 | 0 |
| 2010 | 0 | 3 |
| 2011 | 1 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 4 |
| 2014 | 2 | 1 |
| 2015 | 0 | 1 |
| 2016 | 0 | 2 |
| 2017 | 2 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 2 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Recycling of components contained in a residue obtained from the chloride process23 Dec 2025US 12,503,374 B2Kronos International, Inc.
- Method for recovering transition metal tetrahalide and hydrocarbons from a waste stream4 Jan 2022US 11,213,765 B2Borealis AG
- Method for recovering transition metal tetrahalide and hydrocarbons from a waste stream6 Aug 2019US 10,369,491 B2Borealis AG
- Purification of titanium tetrachloride15 Aug 2017US 9,731,979 B2Cristal USA Inc.
- Method for treating titanium-containing feedstock23 May 2017US 9,656,879 B2Toho Titanium Co., Ltd.
- Chlorine Recycle Process for Titanium-Bearing Feedstocks with High Iron Contents for the Production of Titanium Tetrachloride Based on the Conversion of Anhydrous Ferrous Chloride to Ferrous Sulfate with concentrated Sulfuric Acid8 May 2025US 2025/0145487 A1Kronos International, Inc.
- Recycling of components contained in a residue obtained from the chloride process17 Apr 2025US 2025/0122090 A1Kronos International, Inc.
- Recycling of components contained in a residue obtained from the chloride process28 Dec 2023US 2023/0416107 A1Kronos International, Inc.
- Method for recovering transition metal tetrahalide and hydrocarbons from a waste stream21 Nov 2019US 2019/0351346 A1Borealis AG
- Method for recovering titanium (halo) alkoxide from a waste liquid20 Jun 2019US 2019/0184306 A1Clariant International Ltd.
Most cited
By later US patents
- Purification of crude titanium tetrachloride14US 4,070,252 ASCM Corporation · 1978
- Hot inert gas purging for filter blowback process14US 4,812,149 AWestinghouse Electric Corp. · 1989
- Method for preventing the undesirable condensation of aluminum chloride in a fractional distillation column9US 4,385,964 AAluminum Company of America · 1983
- Process for manufacturing high purity metal chlorides8US 4,695,436 AToth Aluminum Corporation · 1987
- Semi-continuous magnesium-hydrogen reduction process for manufacturing of hydrogenated, purified titanium powder8US 8,007,562 B2ADMA Products, Inc. · 2011