C01G 23/022
Titanium tetrachloride
Official title: {Titanium tetrachloride}
C01G23/022 (Titanium tetrachloride) appears on 73 US grants and 67 published applications in this corpus.
Search patents in C01G- Granted patents
- 73
- Published applications
- 67
- Assignees
- 53
- Inventors
- 188
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 1 |
| 2003 | 1 | 2 |
| 2004 | 1 | 1 |
| 2005 | 1 | 2 |
| 2006 | 2 | 6 |
| 2007 | 1 | 4 |
| 2008 | 1 | 4 |
| 2009 | 1 | 3 |
| 2010 | 0 | 6 |
| 2011 | 2 | 1 |
| 2012 | 3 | 4 |
| 2013 | 1 | 5 |
| 2014 | 7 | 3 |
| 2015 | 2 | 4 |
| 2016 | 1 | 5 |
| 2017 | 6 | 2 |
| 2018 | 2 | 3 |
| 2019 | 4 | 6 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 2 | 0 |
| 2023 | 1 | 1 |
| 2024 | 1 | 1 |
| 2025 | 1 | 2 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Recycling of components contained in a residue obtained from the chloride process23 Dec 2025US 12,503,374 B2Kronos International, Inc.
- Metal chlorides and metals obtained from metal oxide containing materials7 May 2024US 11,975,982 B2Keystone Metals Recovery Inc.
- Centrifugal aluminum chloride generator8 Aug 2023US 11,718,538 B2Tronox LLC
- High purity tungsten pentachloride and production method thereof30 Aug 2022US 11,427,479 B2JX Nippon Mining & Metals Corporation
- Method for recovering transition metal tetrahalide and hydrocarbons from a waste stream4 Jan 2022US 11,213,765 B2Borealis AG
- 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.
- Metal chlorides and metals obtained from metal oxide containing materials17 Oct 2024US 2024/0343569 A1Keystone Metals Recovery 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
Most cited
By later US patents
- Process for treating chlorinated hydrocarbons15US 4,435,379 AThe Dow Chemical Company · 1984
- 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
- Processes for treating red mud14US 9,023,301 B2Orbite Aluminae Inc. · 2015
- Process for treating chlorinated nitrogen-containing hydrocarbons11US 4,587,116 AThe Dow Chemical Company · 1986