C08F 4/62
Refractory metals or compounds thereof
C08F4/62 (Refractory metals or compounds thereof) appears on 5,026 US grants and 4,464 published applications in this corpus.
Search patents in C08F- Granted patents
- 5,026
- Published applications
- 4,464
- Assignees
- 606
- Inventors
- 5,827
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 6 | 0 |
| 1988 | 3 | 0 |
| 1989 | 10 | 0 |
| 1990 | 23 | 0 |
| 1991 | 29 | 0 |
| 1992 | 33 | 0 |
| 1993 | 46 | 0 |
| 1994 | 56 | 0 |
| 1995 | 80 | 0 |
| 1996 | 91 | 0 |
| 1997 | 130 | 0 |
| 1998 | 140 | 0 |
| 1999 | 108 | 0 |
| 2000 | 181 | 0 |
| 2001 | 257 | 75 |
| 2002 | 265 | 190 |
| 2003 | 224 | 210 |
| 2004 | 171 | 221 |
| 2005 | 167 | 171 |
| 2006 | 164 | 149 |
| 2007 | 126 | 122 |
| 2008 | 76 | 120 |
| 2009 | 90 | 152 |
| 2010 | 110 | 134 |
| 2011 | 113 | 131 |
| 2012 | 100 | 133 |
| 2013 | 134 | 165 |
| 2014 | 132 | 140 |
| 2015 | 145 | 147 |
| 2016 | 155 | 179 |
| 2017 | 153 | 200 |
| 2018 | 158 | 218 |
| 2019 | 179 | 242 |
| 2020 | 184 | 222 |
| 2021 | 219 | 252 |
| 2022 | 190 | 258 |
| 2023 | 139 | 207 |
| 2024 | 135 | 190 |
| 2025 | 168 | 133 |
| 2026 | 118 | 103 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C08F 4/64Titanium, zirconium, hafnium or compounds thereof4,729
- C08F 4/639Component covered by group c08f4/62 containing a transition metal-carbon bond359
- C08F 4/69Chromium, molybdenum, tungsten or compounds thereof71
- C08F 4/68Vanadium, niobium, tantalum or compounds thereof28
- C08F 4/622Component covered by group c08f4/62 with an organo-aluminium compound11
- C08F 4/62003The metallic compound containing a multidentate ligand, i.e. a ligand capable of9
- C08F 4/627Catalysts containing a specific non-metal or metal-free compound4
- C08F 4/623Component covered by group c08f4/62 with a metal or compound covered by2
Recent patents
- Thermoplastic resin composition6 Oct 2026US 12,753,300 B2LG Chem.Ltd.
- Propylene copolymers obtained using transition metal bis(phenolate) catalyst complexes and homogeneous process for production thereof29 Sep 2026US 12,747,311 B2ExxonMobil Technology and Engineering Company
- Polymers with low levels of volatile organic compounds and methods of making such polymers22 Sep 2026US 12,742,026 B2ExxonMobil Chemical Patents Inc.
- Olefinic polymer, and method for preparing same15 Sep 2026US 12,735,515 B2Hanwha Solutions Corporation
- Method for producing catalyst for polymerization of olefin, catalyst for polymerization of olefin, and method for producing polymer of olefin15 Sep 2026US 12,735,525 B2Toho Titanium Co., Ltd.
- Ethylene/alpha-olefin copolymer and preparation method thereof8 Oct 2026US 2026/0308291 A1China Petroleum & Chemical Corporation
- High dart impact and tear films from titanium based prepolymer catalyzed polyethylenes8 Oct 2026US 2026/0308292 A1Formosa Plastics Corporation, U. S. A
- Ziegler-natta catalyst for ethylene polymerization and method for preparing same24 Sep 2026US 2026/0286017 A1Hanwha Solutions Corporation
- Solid titanium catalyst component, catalyst for polymerizing olefin, and method for polymerizing olefin24 Sep 2026US 2026/0286018 A1Mitsui Chemicals, Inc.
- Process for producing branched polyolefin17 Sep 2026US 2026/0275006 A1Dow Global Technologies LLC
Most cited
By later US patents
- Elastic substantially linear olefin polymers1,374US 5,272,236 AThe Dow Chemical Company · 1993
- Elastic substantialy linear olefin polymers1,117US 5,278,272 AThe Dow Chemical Company · 1994
- Supported polymerization catalyst710US 4,808,561 AExxon Chemical Patents Inc. · 1989
- Ionic metallocene catalyst compositions596US 5,198,401 AExxon Chemical Patents Inc. · 1993
- Catalyst system of enhanced productivity544US 5,153,157 AExxon Chemical Patents Inc. · 1992