C08F 4/02
Carriers therefor
C08F4/02 (Carriers therefor) appears on 387 US grants and 293 published applications in this corpus.
Search patents in C08F- Granted patents
- 387
- Published applications
- 293
- Assignees
- 131
- Inventors
- 963
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 4 | 0 |
| 1978 | 19 | 0 |
| 1979 | 8 | 0 |
| 1980 | 19 | 0 |
| 1981 | 20 | 0 |
| 1982 | 22 | 0 |
| 1983 | 10 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 8 | 0 |
| 2001 | 6 | 5 |
| 2002 | 6 | 4 |
| 2003 | 5 | 3 |
| 2004 | 3 | 2 |
| 2005 | 4 | 1 |
| 2006 | 4 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 1 |
| 2012 | 0 | 2 |
| 2013 | 0 | 10 |
| 2014 | 2 | 4 |
| 2015 | 11 | 12 |
| 2016 | 10 | 15 |
| 2017 | 12 | 21 |
| 2018 | 16 | 24 |
| 2019 | 23 | 30 |
| 2020 | 18 | 21 |
| 2021 | 15 | 26 |
| 2022 | 25 | 22 |
| 2023 | 12 | 34 |
| 2024 | 24 | 26 |
| 2025 | 24 | 19 |
| 2026 | 16 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Catalyst systems and processes for producing polyethylene using the same21 Jul 2026US 12,686,731 B2Dow Global Technologies LLC
- Carrier for olefin polymerization catalyst and application thereof, catalyst for olefin polymerization and application thereof, and olefin polymerization method14 Jul 2026US 12,679,907 B2Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation
- Catalyst systems and processes for producing polyethylene using the same14 Jul 2026US 12,679,908 B2Dow Global Technologies LLC
- Process for preparation of a catalyst with a polyolefin coat16 Jun 2026US 12,655,234 B2Reliance Industries Limited
- Medium density polyethylene compositions with broad orthogonal composition distribution16 Jun 2026US 12,655,240 B2ExxonMobil Chemical Patents Inc.
- High dart impact and tear films from titanium based prepolymer catalyzed polyethylenes8 Oct 2026US 2026/0308292 A1Formosa Plastics Corporation, U. S. A
- Spherical catalyst for olefin polymerization17 Sep 2026US 2026/0275004 A1Zhejiang University
- 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
- High density polyethylene for pipe applications with improved pressure performance and mechanical properties30 Jul 2026US 2026/0217882 A1Abu Dhabi Polymers Co. Ltd (Borouge) - Sole Proprietorship L.L.C.
- Catalyst transition process23 Jul 2026US 2026/0209404 A1Borealis AG
Most cited
By later US patents
- Catalyst components and catalysts for the polymerization of alpha-olefins362US 4,399,054 AMontedison S.p.A. · 1983
- Organometal catalyst compositions262US 6,632,894 B1Phillips Petroleum Company · 2003
- Catalysts for the polymerization of olefins169US 4,298,718 AMontecatini Edison S.p.A. · 1981
- Components of catalysts for polymerizing alpha-olefins and the catalysts formed from the components159US 4,220,554 AMontedison S.p.A. · 1980
- Methods for producing fluorided-chlorided silica-coated alumina activator-supports and catalyst systems containing the same146US 9,023,959 B2Chevron Phillips Chemical Company LP · 2015