C07C 2531/38
Of titanium, zirconium or hafnium
Official title: of titanium, zirconium or hafnium
C07C2531/38 (Of titanium, zirconium or hafnium) appears on 50 US grants and 25 published applications in this corpus.
Search patents in C07C- Granted patents
- 50
- Published applications
- 25
- Assignees
- 36
- Inventors
- 135
- Latest grant
- 24 Oct 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 1 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 3 |
| 2012 | 1 | 1 |
| 2013 | 1 | 1 |
| 2014 | 1 | 1 |
| 2015 | 0 | 3 |
| 2016 | 2 | 4 |
| 2017 | 1 | 1 |
| 2018 | 3 | 0 |
| 2019 | 2 | 1 |
| 2020 | 1 | 2 |
| 2021 | 3 | 2 |
| 2022 | 0 | 2 |
| 2023 | 3 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Antifouling oligomerization catalyst systems24 Oct 2023US 11,794,176 B2Saudi Arabian Oil Company
- Antifouling oligomerization catalyst systems17 Oct 2023US 11,786,889 B2Saudi Arabian Oil Company
- Dimer selective metallocene catalysts, non-aromatic hydrocarbon soluble activators, and processes to produce poly alpha-olefin oligmers therewith30 May 2023US 11,661,465 B2ExxonMobil Chemical Patents Inc.
- C20 2-substituted alpha olefins produced by dimerization of branched C10 olefins16 Nov 2021US 11,174,205 B2Chevron Phillips Chemical Company LP
- Method for producing alpha-olefin oligomer13 Apr 2021US 10,975,001 B2Idemitsu Kosan Co., Ltd.
- Highly efficient and stable lycopene cis-isomerization method20 Aug 2026US 2026/0242309 A1China Pharmaceutical University
- Method for producing alpha-olefin18 Jul 2024US 2024/0239727 A1Idemitsu Kosan Co., Ltd.
- Antifouling oligomerization catalyst systems8 Sep 2022US 2022/0280926 A1Saudi Arabian Oil Company
- Antifouling oligomerization catalyst systems8 Sep 2022US 2022/0280927 A1Saudi Arabian Oil Company
- C20 2-Substituted Alpha Olefins Produced By Dimerization Of Branched C10 Olefins21 Oct 2021US 2021/0323892 A1Chevron Phillips Chemical Company LP
Most cited
By later US patents
- Process for the production of light alpha olefins by oligomerization of ethylene59US 5,345,023 AInstitut Francais du Petrole · 1994
- Method of production of improved purity light alpha olefines by ogliomerisation of ethylene57US 5,811,619 AInstitut Francais du Petrole · 1998
- Process for preparing linear alpha-olefins using zirconium adducts as catalysts56US 4,966,874 AExxon Chemical Patents Inc. · 1990
- Process for oligomerizing C.sub.3 and higher olefins using zirconium adducts as catalysts (CS-467)53US 5,449,850 AExxon Chemical Patents Inc. · 1995
- Process for the conversion of ethylene into light alpha olefins with the use of additives based on quaternary ammonium salts51US 5,817,905 AInstitut Francais du Petrole · 1998