Process for preparing polypropylene composition
US-2019367642-A1 · Dec 5, 2019 · US
Magnesium halide as support anhydrous or hydrated or complexed by means of a Lewis base for Ziegler-type catalysts
Magnesium halide as support anhydrous or hydrated or complexed by means of a Lewis base for Ziegler-type catalysts · 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 | C08F4/022 |
| Official title | {Magnesium halide as support anhydrous or hydrated or complexed by means of a Lewis base for Ziegler-type catalysts} |
| Display label | Magnesium halide as support anhydrous or hydrated or complexed by means of a Lewis base for Ziegler-type catalysts |
| Total patents | 145 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 11 |
| 2017 | 8 |
| 2018 | 18 |
| 2019 | 21 |
| 2020 | 18 |
| 2021 | 24 |
| 2022 | 17 |
| 2023 | 8 |
| 2024 | 9 |
| 2025 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Heterophasic propylene copolymer
US-2019352491-A1 · Nov 21, 2019 · US
Polethylene composition having high swell ratio
US-2019338108-A1 · Nov 7, 2019 · US
Polyethylene composition for blow molding having high swell ratio and impact resistance
US-2019284378-A1 · Sep 19, 2019 · US
Process to prepare a solid support for a procatalyst suitable for polymerization of olefins
US-2019225715-A1 · Jul 25, 2019 · US
Iron-based precatalyst and its use in the polymerization of α-olefins
US-10351638-B2 · Jul 16, 2019 · US
Solution polymerization process
US-2019185590-A1 · Jun 20, 2019 · US
Long-chain branched polypropylene for foam application
US-10316177-B2 · Jun 11, 2019 · US
High-density ethylene-based polymer using supported hybrid metallocene catalyst, and manufacturing method therefor
US-2019169325-A1 · Jun 6, 2019 · US
Polyethylene, method for preparing the same and separator using the same
US-2019161564-A1 · May 30, 2019 · US
Process for producing lldpe resins
US-2019119419-A1 · Apr 25, 2019 · US
Olefin Coordination Polymerization Catalyst, And Preparation Method And Application Thereof
US-2019048106-A1 · Feb 14, 2019 · US
Boron-based electron donors for ziegler-natta catalyst systems
US-2019046965-A1 · Feb 14, 2019 · US
Non-phthalate catalyst system and its use in the polymerization of olefins
US-2019016832-A1 · Jan 17, 2019 · US
Non-phthalate catalyst system and its use in the polymerization of olefins
US-2019010264-A1 · Jan 10, 2019 · US
Non-phthalate catalyst system and its use in the polymerization of olefins
US-2019010258-A1 · Jan 10, 2019 · US
Polymerization Initiating System And Method To Produce Highly Reactive Olefin Functional Polymers
US-2019002607-A1 · Jan 3, 2019 · US
Polymerization initiating system and method to produce highly reactive olefin functional polymers
US-10167352-B1 · Jan 1, 2019 · US
Ethylene alpha-olefin copolymers and methods
US-2018319916-A1 · Nov 8, 2018 · US
Catalyst components for the polymerization of olefins
US-10113013-B2 · Oct 30, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08F4/022?
- CPC C08F4/022 is the Cooperative Patent Classification code for “Magnesium halide as support anhydrous or hydrated or complexed by means of a Lewis base for Ziegler-type catalysts.”
- How many patents are filed under CPC C08F4/022 (Magnesium halide as support anhydrous or hydrated or complexed by means of a Lewis base for Ziegler-type catalysts)?
- Our database includes 145 publications tagged with this CPC code.
- Is patent activity under CPC C08F4/022 growing?
- Publication counts under this code: 9 in 2024 vs 6 in 2025 (latest complete years).