Catalyst components for the polymerization of olefins
US-2026092131-A1 · Apr 2, 2026 · US
with silicon or compounds thereof
with silicon 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 | C08F4/656 |
| Official title | with silicon or compounds thereof |
| Display label | with silicon or compounds thereof |
| Total patents | 45 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 5 |
| 2017 | 5 |
| 2018 | 4 |
| 2019 | 8 |
| 2020 | 5 |
| 2021 | 4 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 1 |
| 2025 | 2 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process to prepare a procatalyst for polymerization of olefins
US-12565549-B2 · Mar 3, 2026 · US
Process for preparing a propylene composition
US-2025289914-A1 · Sep 18, 2025 · US
Process for preparing solid catalyst components for olefin polymerization
US-12240925-B2 · Mar 4, 2025 · US
Olefin polymer and method for producing olefin polymer
US-11912796-B2 · Feb 27, 2024 · US
Metallocene-supported catalyst and method of preparing polyolefin using the same
US-11767377-B2 · Sep 26, 2023 · US
Catalyst components for propylene polymerization
US-11634520-B2 · Apr 25, 2023 · US
Process to prepare a procatalyst for polymerization of olefins
US-2023021046-A1 · Jan 19, 2023 · US
Process for preparing solid catalyst components for olefin polymerization
US-2022289881-A1 · Sep 15, 2022 · US
Polyolefin polymer composition
US-11421056-B2 · Aug 23, 2022 · US
Metallocene-supported catalyst and method of preparing polyolefin using the same
US-2021087306-A1 · Mar 25, 2021 · US
Catalyst composition with mixed selectivity control agent and method
US-10926234-B2 · Feb 23, 2021 · US
Olefin polymer and method for producing olefin polymer
US-2021040245-A1 · Feb 11, 2021 · US
Metallocene-supported catalyst and method of preparing polyolefin using the same
US-10889662-B2 · Jan 12, 2021 · US
Catalyst Components for Propylene Polymerization
US-2020283553-A1 · Sep 10, 2020 · US
Procatalyst for polymerization of olefins comprising an aminobenzoate internal donor and a 1,3-diether internal donor in a specific ratio
US-10730971-B2 · Aug 4, 2020 · US
Catalyst component for olefin polymerization, catalyst, and use thereof
US-10662268-B2 · May 26, 2020 · US
Self-limiting catalyst system with controlled aluminum to SCA ratio and method
US-10647788-B2 · May 12, 2020 · US
Modified catalyst supports
US-10618987-B2 · Apr 14, 2020 · US
Solid catalyst for the (co)polymerisation of α-olefins and process for the preparation thereof
US-10486144-B2 · Nov 26, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08F4/656?
- CPC C08F4/656 is the Cooperative Patent Classification code for “with silicon or compounds thereof.”
- How many patents are filed under CPC C08F4/656 (with silicon or compounds thereof)?
- Our database includes 45 publications tagged with this CPC code.
- Is patent activity under CPC C08F4/656 growing?
- Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).