C08F 4/74
Selected from refractory metals
Official title: selected from refractory metals
C08F4/74 (Selected from refractory metals) appears on 327 US grants and 402 published applications in this corpus.
Search patents in C08F- Granted patents
- 327
- Published applications
- 402
- Assignees
- 119
- Inventors
- 783
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 3 |
| 2009 | 0 | 2 |
| 2010 | 0 | 5 |
| 2011 | 0 | 3 |
| 2012 | 3 | 8 |
| 2013 | 11 | 50 |
| 2014 | 29 | 41 |
| 2015 | 46 | 35 |
| 2016 | 41 | 24 |
| 2017 | 20 | 22 |
| 2018 | 17 | 21 |
| 2019 | 20 | 18 |
| 2020 | 18 | 20 |
| 2021 | 15 | 28 |
| 2022 | 20 | 25 |
| 2023 | 20 | 40 |
| 2024 | 20 | 28 |
| 2025 | 19 | 15 |
| 2026 | 19 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Olefin-based polymer and method for preparing same6 Oct 2026US 12,753,253 B2Hanwha Solutions Corporation
- Olefin-based polymer4 Aug 2026US 12,698,353 B2LG Chem.Ltd.
- Metallocene catalysts for producing vinyl-terminated polyalphaolefins and methods associated therewith28 Jul 2026US 12,692,327 B2ExxonMobil Chemical Patents Inc.
- Medium density polyethylene compositions with broad orthogonal composition distribution16 Jun 2026US 12,655,240 B2ExxonMobil Chemical Patents Inc.
- Olefin polymerization catalysts bearing a 6-amino-N-aryl azaindole ligand2 Jun 2026US 12,643,915 B2Dow Global Technologies LLC
- Supported olefin polymerization catalysts comprising substituted 2-hydroxythiophene compounds8 Oct 2026US 2026/0308284 A1Dow Global Technologies LLC
- Symmetrical zirconium metallocenes having isobutyl cyclopentadienyl ligands27 Aug 2026US 2026/0250309 A1Dow Global Technologies LLC
- Polyolefin compositions for injection molding27 Aug 2026US 2026/0250438 A1Dow Global Technologies LLC
- Bottlebrush Poly(alpha olefin) Networks6 Aug 2026US 2026/0226212 A1
- Olefin polymerization catalyst and method for producing olefin polymer25 Jun 2026US 2026/0176388 A1Toho Titanium Co., Ltd.
Most cited
By later US patents
- 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
- Catalyst compositions for producing high Mz/Mw polyolefins72US 8,383,754 B2Chevron Phillips Chemical Company LP · 2013
- Methods of preparing a catalyst55US 10,287,369 B2Chevron Phillips Chemical Company LP · 2019
- Ziegler-natta—metallocene dual catalyst systems with activator-supports49US 9,540,457 B1Chevron Phillips Chemical Company LP · 2017
- Long chain branched polymers and methods of making same43US 9,023,967 B2Chevron Phillips Chemical Company LP · 2015