Gas-phase process for the polymerization of propylene
US-10730974-B2 · Aug 4, 2020 · US
Titanium tetrahalides with organo-aluminium compounds
Titanium tetrahalides with organo-aluminium compounds · 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 | C08F4/6421 |
| Official title | {Titanium tetrahalides with organo-aluminium compounds} |
| Display label | Titanium tetrahalides with organo-aluminium compounds |
| Total patents | 94 |
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 | 1 |
| 2016 | 8 |
| 2017 | 14 |
| 2018 | 16 |
| 2019 | 16 |
| 2020 | 8 |
| 2021 | 9 |
| 2022 | 8 |
| 2023 | 3 |
| 2024 | 6 |
| 2025 | 3 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
External donor for olefin polymerization
US-10689465-B2 · Jun 23, 2020 · US
Olefin polymerization catalyst comprising cyclotriveratrylene and derivatives thereof
US-2020181296-A1 · Jun 11, 2020 · US
Composition comprising propylene-ethylene-1-butene terpolymers
US-10577492-B2 · Mar 3, 2020 · US
Electron donors for ziegler-natta precatalyst preparation and catalyst system for olefin polymerization
US-2020010586-A1 · Jan 9, 2020 · US
Off-line filter free ziegler-natta catalyst preparation
US-2019375862-A1 · Dec 12, 2019 · US
Olefin-polymerization solid catalytic component, production method for olefin-polymerization catalyst, and production method for olefin polymer
US-10472436-B2 · Nov 12, 2019 · US
Process For Production of High Melt Flow Propylene-Based Polymer and Product From Same
US-2019338054-A1 · Nov 7, 2019 · US
Solid catalyst component for olefin polymerization, method for producing the same, olefin polymerization catalyst, and method for producing olefin polymer
US-10457755-B2 · Oct 29, 2019 · US
Ziegler-Natta catalyst for high temperature polymerization
US-10442880-B2 · Oct 15, 2019 · US
Prepolymerized catalyst components for the polymerization of olefins
US-10435490-B2 · Oct 8, 2019 · US
Production method for olefin-polymerization catalyst and production method for olefin polymer
US-10392453-B2 · Aug 27, 2019 · US
Olefin Coordination Polymerization Catalyst and Use Thereof
US-2019248928-A1 · Aug 15, 2019 · US
Process for production of high melt flow propylene-based polymer and product from same
US-10358505-B2 · Jul 23, 2019 · US
Self-regulating external electron donor-containing catalyst used for alpha-olefin polymerization, and application of catalyst
US-2019211116-A1 · Jul 11, 2019 · US
Ziegler-Natta catalyst composition for preparing polyethylene
US-10344103-B2 · Jul 9, 2019 · US
Catalyst composition for making ultra high molecular weight poly (alpha-olefin) drag reducing agents
US-10301410-B2 · May 28, 2019 · US
Ziegler-natta catalysts doped with non-Group IV metal chlorides
US-10294311-B2 · May 21, 2019 · US
Method of reducing drag in a conduit
US-10287374-B2 · May 14, 2019 · US
Shape controlled pro-catalyst and a single pot process for preparing the same
US-10259896-B2 · Apr 16, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08F4/6421?
- CPC C08F4/6421 is the Cooperative Patent Classification code for “Titanium tetrahalides with organo-aluminium compounds.”
- How many patents are filed under CPC C08F4/6421 (Titanium tetrahalides with organo-aluminium compounds)?
- Our database includes 94 publications tagged with this CPC code.
- Is patent activity under CPC C08F4/6421 growing?
- Publication counts under this code: 6 in 2024 vs 3 in 2025 (latest complete years).