Processes to Produce Poly Alpha-Olefin Trimer and Apparatus Therefor
US-2019359748-A1 · Nov 28, 2019 · US
containing at least two cyclopentadienyl rings, fused or not
containing at least two cyclopentadienyl rings, fused or not · 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 | C08F4/65922 |
| Official title | {containing at least two cyclopentadienyl rings, fused or not} |
| Display label | containing at least two cyclopentadienyl rings, fused or not |
| Total patents | 154 |
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 | 9 |
| 2016 | 16 |
| 2017 | 12 |
| 2018 | 9 |
| 2019 | 20 |
| 2020 | 18 |
| 2021 | 22 |
| 2022 | 15 |
| 2023 | 11 |
| 2024 | 13 |
| 2025 | 8 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Metallocene compound, metallocene-supported catalyst, and method of preparing polyolefin using the same
US-10450390-B2 · Oct 22, 2019 · US
Olefin Polymer And Preparation Method Thereof
US-2019284317-A1 · Sep 19, 2019 · US
Bimetallic catalytic compounds and compositions comprising permethylpentalene ligands
US-2019283008-A1 · Sep 19, 2019 · US
Propylene homopolymer for stress-resistant molded article, composition containing the polymer, and stress-resistant molded articles obtained therefrom
US-10370465-B2 · Aug 6, 2019 · US
Methods of monitoring and controlling the melt index of a polyolefin product during production
US-10329365-B2 · Jun 25, 2019 · US
High-density ethylene-based polymer using supported hybrid metallocene catalyst, and manufacturing method therefor
US-2019169325-A1 · Jun 6, 2019 · US
Olefin-based Copolymer And Process For Preparing Same
US-2019135963-A1 · May 9, 2019 · US
Bimodal polypropylene compositions and method of making same
US-10266685-B2 · Apr 23, 2019 · US
Metallocene Supported Catalyst And Method For Preparing Polypropylene Using The Same
US-2019106516-A1 · Apr 11, 2019 · US
Ethylene/1-hexene Copolymer Having Excellent Processability And Mechanical Properties
US-2019100611-A1 · Apr 4, 2019 · US
Methods of monitoring and controlling the melt index of a polyolefin product during production
US-2019092886-A1 · Mar 28, 2019 · US
Supported hybrid metallocene catalyst, and method for preparing polyolefin using the same
US-2019062474-A1 · Feb 28, 2019 · US
Supported hybrid catalyst system for ethylene slurry polymerization and method for preparing ethylene polymer with the catalyst system
US-2019010256-A1 · Jan 10, 2019 · US
Solid polyaluminoxane composition, olefin polymerization catalyst, olefin polymer production method and solid polyaluminoxane composition production method
US-10150823-B2 · Dec 11, 2018 · US
Viscosity modifier for lubricating oils, additive composition for lubricating oils, and lubricating oil compositions
US-2018320102-A1 · Nov 8, 2018 · US
Polypropylene
US-2018298122-A1 · Oct 18, 2018 · US
Production method of olefin (co)polymer containing constituent unit derived from 1-butene
US-9944728-B2 · Apr 17, 2018 · US
Methods and systems for olefin polymerization
US-2018100031-A1 · Apr 12, 2018 · US
Heterophasic polypropylene polymer
US-9932469-B2 · Apr 3, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08F4/65922?
- CPC C08F4/65922 is the Cooperative Patent Classification code for “containing at least two cyclopentadienyl rings, fused or not.”
- How many patents are filed under CPC C08F4/65922 (containing at least two cyclopentadienyl rings, fused or not)?
- Our database includes 154 publications tagged with this CPC code.
- Is patent activity under CPC C08F4/65922 growing?
- Publication counts under this code: 13 in 2024 vs 8 in 2025 (latest complete years).