C08F 4/44
Selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium
Official title: selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
C08F4/44 (Selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium) appears on 5,979 US grants and 5,159 published applications in this corpus.
Search patents in C08F- Granted patents
- 5,979
- Published applications
- 5,159
- Assignees
- 816
- Inventors
- 7,168
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 9 | 0 |
| 1978 | 7 | 0 |
| 1979 | 4 | 0 |
| 1980 | 8 | 0 |
| 1981 | 14 | 0 |
| 1982 | 6 | 0 |
| 1983 | 5 | 0 |
| 1984 | 4 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 12 | 0 |
| 1988 | 5 | 0 |
| 1989 | 12 | 0 |
| 1990 | 27 | 0 |
| 1991 | 31 | 0 |
| 1992 | 38 | 0 |
| 1993 | 56 | 0 |
| 1994 | 69 | 0 |
| 1995 | 101 | 0 |
| 1996 | 121 | 0 |
| 1997 | 166 | 0 |
| 1998 | 183 | 0 |
| 1999 | 143 | 0 |
| 2000 | 227 | 0 |
| 2001 | 305 | 85 |
| 2002 | 318 | 214 |
| 2003 | 246 | 232 |
| 2004 | 196 | 231 |
| 2005 | 184 | 187 |
| 2006 | 173 | 167 |
| 2007 | 133 | 134 |
| 2008 | 84 | 133 |
| 2009 | 93 | 163 |
| 2010 | 124 | 144 |
| 2011 | 125 | 147 |
| 2012 | 107 | 152 |
| 2013 | 142 | 198 |
| 2014 | 147 | 184 |
| 2015 | 187 | 189 |
| 2016 | 192 | 205 |
| 2017 | 181 | 236 |
| 2018 | 190 | 269 |
| 2019 | 210 | 293 |
| 2020 | 222 | 276 |
| 2021 | 262 | 292 |
| 2022 | 234 | 302 |
| 2023 | 169 | 242 |
| 2024 | 166 | 217 |
| 2025 | 194 | 156 |
| 2026 | 136 | 111 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C08F 4/60Together with refractory metals, iron group metals, platinum group metals, manganese, rhenium5,461
- C08F 4/52Selected from boron, aluminium, gallium, indium, thallium or rare earths283
- C08F 4/46Selected from alkali metals199
- C08F 4/54Together with other compounds thereof138
- C08F 4/50Selected from alkaline earth metals, zinc, cadmium, mercury, copper or silver55
- C08F 4/58Together with silicon, germanium, tin, lead, antimony, bismuth or compounds thereof29
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
- Process and catalysts for hydrogen mediated anionic polymerization of conjugated dienes and liquid polymers thereof29 Sep 2026US 12,747,315 B2Albemarle Corporation
- 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
- 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
- A highly efficient process for the recovery and conversion of methylaluminoxane residues24 Sep 2026US 2026/0285883 A1LANXESS Organometallics GmbH
- 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.
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
- Metal complex compounds688US 5,064,802 AThe Dow Chemical Company · 1991
- Ionic metallocene catalyst compositions596US 5,198,401 AExxon Chemical Patents Inc. · 1993