Catalyst components for the polymerization of olefins
US-2026092131-A1 · Apr 2, 2026 · US
with aluminium or compounds thereof
with aluminium or compounds thereof · 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 | C08F4/655 |
| Official title | with aluminium or compounds thereof |
| Display label | with aluminium or compounds thereof |
| Total patents | 51 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 4 |
| 2017 | 6 |
| 2018 | 9 |
| 2019 | 2 |
| 2020 | 6 |
| 2021 | 2 |
| 2022 | 7 |
| 2023 | 1 |
| 2024 | 3 |
| 2025 | 6 |
| 2026 | 1 |
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
Propylene preliminary polymerization
US-12319756-B2 · Jun 3, 2025 · US
Polymeric materials
US-2025164080-A1 · May 22, 2025 · US
Ethylenic polymer particle, method for producing ethylenic polymer particle, stretch-molded body, method for producing stretch-molded body, and use of same
US-2025149586-A1 · May 8, 2025 · US
Polymerization method and apparatus therefor
US-12269024-B2 · Apr 8, 2025 · US
Polymeric materials
US-12234952-B2 · Feb 25, 2025 · US
Ethylene/1-hexene copolymers
US-2024400733-A1 · Dec 5, 2024 · US
Method for preparing supported olefin polymerization catalyst, resulting catalyst and application thereof
US-2024166774-A1 · May 23, 2024 · US
Polymerisation method and apparatus therefor
US-2024024833-A1 · Jan 25, 2024 · US
Polymerisation method and apparatus therefor
US-11813602-B2 · Nov 14, 2023 · US
Propylene preliminary polymerization
US-2022411545-A1 · Dec 29, 2022 · US
Ziegler-natta catalysts for olefin polymerization
US-2022363785-A1 · Nov 17, 2022 · US
Modified spray-dried Ziegler-Natta (pro)catalyst systems
US-11325928-B2 · May 10, 2022 · US
Processes for reducing the loss of catalyst activity of a Ziegler-Natta catalyst
US-11311870-B2 · Apr 26, 2022 · US
Polymeric materials
US-2022120385-A1 · Apr 21, 2022 · US
Process for the preparation of catalyst components for the polymerization of olefins
US-11267907-B2 · Mar 8, 2022 · US
Polymerisation method and apparatus therefor
US-2022055003-A1 · Feb 24, 2022 · US
Method for improving Ziegler-Natta catalyst activity
US-11180582-B2 · Nov 23, 2021 · US
Method for improving ziegler-natta catalyst activity
US-2021189024-A1 · Jun 24, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08F4/655?
- CPC C08F4/655 is the Cooperative Patent Classification code for “with aluminium or compounds thereof.”
- How many patents are filed under CPC C08F4/655 (with aluminium or compounds thereof)?
- Our database includes 51 publications tagged with this CPC code.
- Is patent activity under CPC C08F4/655 growing?
- Publication counts under this code: 3 in 2024 vs 6 in 2025 (latest complete years).