C08F 4/6192
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
C08F4/6192 (Containing at least one cyclopentadienyl ring, condensed or not) appears on 332 US grants and 73 published applications in this corpus.
Search patents in C08F- Granted patents
- 332
- Published applications
- 73
- Assignees
- 93
- Inventors
- 550
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 7 | 0 |
| 1995 | 13 | 0 |
| 1996 | 21 | 0 |
| 1997 | 39 | 0 |
| 1998 | 40 | 0 |
| 1999 | 30 | 0 |
| 2000 | 40 | 0 |
| 2001 | 35 | 3 |
| 2002 | 27 | 3 |
| 2003 | 10 | 11 |
| 2004 | 8 | 1 |
| 2005 | 2 | 6 |
| 2006 | 4 | 1 |
| 2007 | 2 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 3 | 4 |
| 2011 | 3 | 3 |
| 2012 | 1 | 0 |
| 2013 | 0 | 3 |
| 2014 | 1 | 0 |
| 2015 | 2 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 2 |
| 2018 | 3 | 10 |
| 2019 | 6 | 8 |
| 2020 | 8 | 4 |
| 2021 | 1 | 0 |
| 2022 | 3 | 4 |
| 2023 | 1 | 3 |
| 2024 | 5 | 2 |
| 2025 | 2 | 2 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Catalyst comprising mixed transition metal compounds, polyolefin prepared using the same, and processes for preparing the same26 May 2026US 12,637,525 B2Hanwha Solutions Corporation
- High porosity fluorided silica-coated alumina activator-supports and uses thereof in metallocene-based catalyst systems for olefin polymerization6 Jan 2026US 12,516,137 B2Chevron Phillips Chemical Company LP
- Polymerization of ethylene in solution processes using a Ziegler-Natta catalyst and a hydrogenation procatalyst11 Nov 2025US 12,466,901 B2Dow Global Technologies LLC
- High porosity fluorided silica-coated alumina activator-supports and uses thereof in metallocene-based catalyst systems for olefin polymerization3 Jun 2025US 12,319,770 B2Chevron Phillips Chemical Company LP
- Method for manufacturing copolymer26 Nov 2024US 12,152,096 B2Bridgestone Corporation
- High porosity fluorided silica-coated alumina activator-supports and uses thereof in metallocene-based catalyst systems for olefin polymerization30 Jul 2026US 2026/0217873 A1Chevron Phillips Chemical Company LP
- Pipes including high density multimodal polyethylene compositions30 Jul 2026US 2026/0218818 A1Dow Global Technologies LLC
- High porosity fluorided silica-coated alumina activator-supports and uses thereof in metallocene-based catalyst systems for olefin polymerization14 Aug 2025US 2025/0257155 A1Chevron Phillips Chemical Company LP
- High porosity fluorided silica-coated alumina activator-supports and uses thereof in metallocene-based catalyst systems for olefin polymerization6 Feb 2025US 2025/0043037 A1Chevron Phillips Chemical Company LP
- Catalysts18 Jul 2024US 2024/0239925 A1Oxford University Innovation Limited
Most cited
By later US patents
- Metal complex compounds688US 5,064,802 AThe Dow Chemical Company · 1991
- Silicon-bridged transition metal compounds390US 5,017,714 AExxon Chemical Patents Inc. · 1991
- New polymerization catalyst328US 4,752,597 AExxon Chemical Patents Inc. · 1988
- Metal complex compounds307US 5,132,380 AThe Dow Chemical Company · 1992
- Addition polymerization catalyst with oxidative activation255US 5,321,106 AThe Dow Chemical Company · 1994