C08F 2420/00
Metallocene catalysts
C08F2420/00 (Metallocene catalysts) appears on 1,062 US grants and 1,202 published applications in this corpus.
Search patents in C08F- Granted patents
- 1,062
- Published applications
- 1,202
- Assignees
- 191
- Inventors
- 1,807
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 5 | 0 |
| 1995 | 11 | 0 |
| 1996 | 9 | 0 |
| 1997 | 8 | 0 |
| 1998 | 15 | 0 |
| 1999 | 12 | 0 |
| 2000 | 18 | 0 |
| 2001 | 24 | 6 |
| 2002 | 34 | 18 |
| 2003 | 22 | 26 |
| 2004 | 16 | 21 |
| 2005 | 29 | 21 |
| 2006 | 11 | 24 |
| 2007 | 18 | 24 |
| 2008 | 10 | 22 |
| 2009 | 18 | 19 |
| 2010 | 26 | 27 |
| 2011 | 25 | 33 |
| 2012 | 17 | 25 |
| 2013 | 21 | 27 |
| 2014 | 27 | 25 |
| 2015 | 35 | 33 |
| 2016 | 43 | 81 |
| 2017 | 50 | 69 |
| 2018 | 68 | 80 |
| 2019 | 59 | 82 |
| 2020 | 66 | 78 |
| 2021 | 76 | 92 |
| 2022 | 62 | 104 |
| 2023 | 51 | 74 |
| 2024 | 52 | 76 |
| 2025 | 81 | 76 |
| 2026 | 41 | 39 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C08F 2420/02Cp or analog bridged to a non-cp x anionic donorIndexing code303
- C08F 2420/04Cp or analog not bridged to a non-cp x ancillary anionic donorIndexing code225
- C08F 2420/07Heteroatom-substituted cp, i.e. cp or analog where at least one of theIndexing code201
- C08F 2420/01Cp or analog bridged to a non-cp x neutral donorIndexing code143
- C08F 2420/06Cp analog where at least one of the carbon atoms of theIndexing code126
- C08F 2420/10Heteroatom-substituted bridge, i.e. cp or analog where the bridge linking the twoIndexing code126
- C08F 2420/09Cyclic bridge, i.e. cp or analog where the bridging unit linking theIndexing code121
- C08F 2420/08Heteroatom bridge, i.e. cp or analog where the bridging atom linking theIndexing code60
All 12 subgroupsShow fewer
- C08F 2420/03Cp or analog not bridged to a non-cp x ancillary neutral donorIndexing code38
- C08F 2420/12Long bridge, i.e. cp or analog where the bridging unit linking theIndexing code37
- C08F 2420/05Cp or analog where at least one of the carbon atoms ofIndexing code32
- C08F 2420/11Non-aromatic cycle-substituted bridge, i.e. cp or analog where the bridge linking theIndexing code12
Recent patents
- Composition for encapsulant film and encapsulant film comprising the same8 Sep 2026US 12,729,256 B2LG Chem.Ltd.
- Metallocene compound, and preparation method therefor and application thereof25 Aug 2026US 12,715,941 B2China Petroleum & Chemical Corporation
- Linear high-density ethylene interpolymer compositions25 Aug 2026US 12,715,983 B2NOVA Chemicals (International) S.A.
- Metallocene catalysts for producing vinyl-terminated polyalphaolefins and methods associated therewith28 Jul 2026US 12,692,327 B2ExxonMobil Chemical Patents Inc.
- Composition for encapsulant film and encapsulant film comprising the same16 Jun 2026US 12,655,238 B2LG Chem.Ltd.
- Ethylene/alpha-olefin copolymer and preparation method thereof8 Oct 2026US 2026/0308291 A1China Petroleum & Chemical Corporation
- Coupled polyethylenes or copolymers of ethylene and 1,3-diene, and process for the preparation thereof10 Sep 2026US 2026/0265418 A1Centre National De La Recherche Scientifique
- Polyolefin compositions for rotomolding10 Sep 2026US 2026/0265429 A1Dow Global Technologies LLC
- A process for preparing propylene-ethylene random copolymers for pipe applications3 Sep 2026US 2026/0258174 A1Borealis AG
- Glass fiber reinforced polypropylene composition27 Aug 2026US 2026/0250493 A1Borealis AG
Most cited
By later US patents
- Silica-coated alumina activator-supports for metallocene catalyst compositions292US 7,884,163 B2Chevron Phillips Chemical Company LP · 2011
- Polymerization of .alpha.-olefins with transition metal catalysts based on bidentate ligands containing pyridine or quinoline moiety209US 5,637,660 ALyondell Petrochemical Company · 1997
- Compositions of ethylene/α-olefin multi-block interpolymer for elastic films and laminates171US 7,355,089 B2Dow Global Technologies LLC · 2008
- Homogeneous olefin polymerization catalyst by abstraction with lewis acids155US 5,721,185 AThe Dow Chemical Company · 1998
- Catalyst composition comprising shuttling agent for ethylene multi-block copolymer formation128US 7,858,706 B2Dow Global Technologies LLC · 2010