C08F 4/61925
Two cyclopentadienyl rings being mutually non-bridged
Official title: {two cyclopentadienyl rings being mutually non-bridged}
C08F4/61925 (Two cyclopentadienyl rings being mutually non-bridged) appears on 34 US grants and 18 published applications in this corpus.
Search patents in C08F- Granted patents
- 34
- Published applications
- 18
- Assignees
- 23
- Inventors
- 95
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 4 | 0 |
| 2002 | 3 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 3 |
| 2011 | 3 | 3 |
| 2012 | 1 | 0 |
| 2013 | 0 | 3 |
| 2014 | 0 | 0 |
| 2015 | 2 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 3 |
| 2024 | 3 | 1 |
| 2025 | 1 | 2 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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
- 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
- High porosity fluorided silica-coated alumina activator-supports and uses thereof in metallocene-based catalyst systems for olefin polymerization19 Nov 2024US 12,146,018 B2Chevron Phillips Chemical Company LP
- High porosity fluorided silica-coated alumina activator-supports and uses thereof in metallocene-based catalyst systems for olefin polymerization27 Feb 2024US 11,912,809 B2Chevron Phillips Chemical Company LP
- 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
- High porosity fluorided silica-coated alumina activator-supports and uses thereof in metallocene-based catalyst systems for olefin polymerization9 May 2024US 2024/0150501 A1Chevron Phillips Chemical Company LP
Most cited
By later US patents
- Heterogeneous organometallic catalysts containing a supported titanium compound and at least one other supported organometallic compound142US 4,659,685 AThe Dow Chemical Company · 1987
- Substituted aminomethylphosphines, compositions and coordination complexes of same, their synthesis and processes using same82US 6,043,363 ASymyx Technologies, Inc. · 2000
- Substituted aminomethylphosphines, coordination complexes of aminomethylphosphines and their synthesis77US 6,034,240 ASymyx Technologies, Inc. · 2000
- Reactor blend polypropylene, process for the preparation thereof and process for preparing metallocene ligands62US 5,747,621 AMontell Technology Company BV · 1998
- Homopolymers and copolymers of cationically polymerizable monomers and method of their preparation42US 5,677,405 AThe B. F. Goodrich Company · 1997