C08F 4/6392
Containing at least one cyclopentadienyl ring, condensed or not
Official title: containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
C08F4/6392 (Containing at least one cyclopentadienyl ring, condensed or not) appears on 261 US grants and 52 published applications in this corpus.
Search patents in C08F- Granted patents
- 261
- Published applications
- 52
- Assignees
- 53
- Inventors
- 309
- Latest grant
- 6 Dec 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 7 | 0 |
| 1991 | 2 | 0 |
| 1992 | 10 | 0 |
| 1993 | 9 | 0 |
| 1994 | 16 | 0 |
| 1995 | 24 | 0 |
| 1996 | 23 | 0 |
| 1997 | 32 | 0 |
| 1998 | 29 | 0 |
| 1999 | 9 | 0 |
| 2000 | 19 | 0 |
| 2001 | 13 | 2 |
| 2002 | 9 | 6 |
| 2003 | 13 | 1 |
| 2004 | 3 | 4 |
| 2005 | 3 | 2 |
| 2006 | 1 | 2 |
| 2007 | 3 | 3 |
| 2008 | 0 | 1 |
| 2009 | 3 | 2 |
| 2010 | 3 | 2 |
| 2011 | 0 | 2 |
| 2012 | 1 | 2 |
| 2013 | 1 | 4 |
| 2014 | 2 | 1 |
| 2015 | 4 | 3 |
| 2016 | 2 | 0 |
| 2017 | 0 | 3 |
| 2018 | 1 | 4 |
| 2019 | 7 | 4 |
| 2020 | 4 | 3 |
| 2021 | 2 | 1 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Supported catalyst system6 Dec 2022US 11,518,824 B2Albert-Ludwias-Universität Freiburo
- Dimethyl-silyl-bridged-1-substituted-2-indenyl metallocene complexes for olefin polymerization26 Oct 2021US 11,155,659 B2Sabic Global Technologies B.V.
- Ethylene interpolymer21 Sep 2021US 11,124,591 B2Bridgestone Corporation
- Chromium (III) catalyst systems with activator-supports8 Dec 2020US 10,858,459 B2Chevron Phillips Chemical Company LP
- Methods for determining transition metal compound concentrations in multicomponent liquid systems30 Jun 2020US 10,697,889 B2Chevron Phillips Chemical Company LP
- Supported catalyst system22 Jul 2021US 2021/0221923 A1Albert-Ludwigs-Universität Freiburg
- Chromium (III) Catalyst Systems With Activator-Supports30 Jul 2020US 2020/0239605 A1Chevron Phillips Chemical Company LP
- Dimethyl-silyl-bridged-1-substituted-2-indenyl metallocene complexes for olefin polymerization16 Apr 2020US 2020/0115478 A1Sabic Global Technologies B.V.
- Ethylene interpolymer30 Jan 2020US 2020/0031974 A1Bridgestone Corporation
- Bimetallic catalytic compounds and compositions comprising permethylpentalene ligands19 Sep 2019US 2019/0283008 A1
Most cited
By later US patents
- Supported polymerization catalyst710US 4,808,561 AExxon Chemical Patents Inc. · 1989
- Process and catalyst for producing syndiotactic polyolefins344US 4,892,851 AFina Technology, Inc. · 1990
- 2-substituted disindenylmetallocenes, process for their preparation, and their use as catalysts in the polymerization of olefins290US 5,145,819 AHoechst Aktiengesellschaft · 1992
- Organometal compound catalyst286US 6,391,816 B1Phillips Petroleum Company · 2002
- Propylene polymer, propylene copolymer, and propylene elastomer prepared using novel bridged indenyl containing metallocenes268US 5,504,172 AMitsui Petrochemical Industries, Ltd. · 1996