Catalyst system for polymerization of an olefin
US-2025382394-A1 · Dec 18, 2025 · US
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Component covered by group C08F4/64 with a metal or compound covered by group C08F4/44 other than an organo-aluminium compound {(C08F4/64003 - C08F4/64196 take precedence)}
Component covered by group C08F4/64 with a metal or compound covered by group C08F4/44 other than an organo-aluminium compound {(C08F4/64003 - C08F4/64196 take precedence)} · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C08F4/643 |
| Official title | Component covered by group C08F4/64 with a metal or compound covered by group C08F4/44 other than an organo-aluminium compound {(C08F4/64003 - C08F4/64196 take precedence)} |
| Display label | Component covered by group C08F4/64 with a metal or compound covered by group C08F4/44 other than an organo-aluminium compound {(C08F4/64003 - C08F4/64196 take precedence)} |
| Total patents | 21 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 1 |
| 2017 | 2 |
| 2019 | 3 |
| 2020 | 1 |
| 2021 | 3 |
| 2022 | 4 |
| 2024 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Ziegler-Natta catalysts for olefin polymerization
US-12359005-B2 · Jul 15, 2025 · US
Washing process
US-12146019-B2 · Nov 19, 2024 · US
Method of Producing Polyethylene
US-2024124626-A1 · Apr 18, 2024 · US
Ziegler-natta catalysts for olefin polymerization
US-2022363785-A1 · Nov 17, 2022 · US
Non-coordinating anion type activators containing cation having large alkyl groups
US-11414436-B2 · Aug 16, 2022 · US
Polypropylene and method for preparing the same
US-11384180-B2 · Jul 12, 2022 · US
Washing process
US-2022177613-A1 · Jun 9, 2022 · US
Industrial preparation method of ziegler-natta catalyst
US-2021403614-A1 · Dec 30, 2021 · US
Process to make non-coordinating anion type activators in aliphatic and alicyclic hydrocarbon solvents
US-11117908-B2 · Sep 14, 2021 · US
Non-coordinating anion type activators containing cation having branched alkyl groups
US-11041031-B2 · Jun 22, 2021 · US
Polypropylene And Method For Preparing The Same
US-2020140583-A1 · May 7, 2020 · US
Non-Coordinating Anion Type Activators Containing Cation Having Large Alkyl Groups
US-2019330139-A1 · Oct 31, 2019 · US
Process to Make Non-Coordinating Anion Type Activators in Aliphatic and Alicyclic Hydrocarbon Solvents
US-2019330246-A1 · Oct 31, 2019 · US
Non-Coordinating Anion Type Activators Containing Cation having Branched Alkyl Groups
US-2019330392-A1 · Oct 31, 2019 · US
Method for preparing high activity ethylene polymerization catalyst
US-2017267791-A1 · Sep 21, 2017 · US
Catalyst component for olefin polymerization, catalyst, and use thereof
US-9751960-B2 · Sep 5, 2017 · US
Catalyst component for olefin polymerization, catalyst, and use thereof
US-2016115257-A1 · Apr 28, 2016 · US
Preparation of precipitated ZN PP catalysts with internal pore structure using nanoparticles
US-9175102-B2 · Nov 3, 2015 · US
Living coordinative chain transfer polymerization with dynamic counterion exchange
US-9175103-B2 · Nov 3, 2015 · US