Polymerization of ethylene in solution processes using a Ziegler-Natta catalyst and a hydrogenation procatalyst
US-12466901-B2 · Nov 11, 2025 · US
containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring · 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 | C08F4/6192 |
| Official title | containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring |
| Display label | containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring |
| Total patents | 27 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 9 |
| 2020 | 7 |
| 2022 | 3 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for manufacturing copolymer
US-12152096-B2 · Nov 26, 2024 · US
Production method for polar olefin polymer and copolymer
US-11603417-B2 · Mar 14, 2023 · US
Methods to produce heterogeneous polyethylene granules
US-11492428-B2 · Nov 8, 2022 · US
Polymerization of ethylene in solution processes using a ziegler-natta catalyst and a hydrogenation procatalyst
US-2022306772-A1 · Sep 29, 2022 · US
Method for manufacturing copolymer
US-2022220238-A1 · Jul 14, 2022 · US
Methods for determining transition metal compound concentrations in multicomponent liquid systems
US-10870094-B2 · Dec 22, 2020 · US
Olefin-block copolymers and their use in elastomeric articles
US-10822480-B2 · Nov 3, 2020 · US
Multi- or dual-headed compositions useful for chain shuttling and process to prepare the same
US-10723816-B2 · Jul 28, 2020 · US
High flow TPO composition with excellent tensile strain at break and low powder stickiness
US-10557027-B2 · Feb 11, 2020 · US
Dual catalyst system for producing LLDPE copolymers with improved processability
US-10544236-B2 · Jan 28, 2020 · US
Methods for Determining Transition Metal Compound Concentrations in Multicomponent Liquid Systems
US-2020023331-A1 · Jan 23, 2020 · US
Production method for polar olefin polymer and copolymer
US-2020010581-A1 · Jan 9, 2020 · US
Methods to Produce Heterogeneous Polyethylene Granules
US-2019389988-A1 · Dec 26, 2019 · US
Methods for determining transition metal compound concentrations in multicomponent liquid systems
US-10507445-B2 · Dec 17, 2019 · US
Process for transitioning between incompatible catalysts
US-10494454-B2 · Dec 3, 2019 · US
Methods for Determining Transition Metal Compound Concentrations in Multicomponent Liquid Systems
US-2019299183-A1 · Oct 3, 2019 · US
Dual Catalyst System for Producing LLDPE Copolymers with Improved Processability
US-2019233551-A1 · Aug 1, 2019 · US
Dual catalyst system for producing LLDPE copolymers with improved processability
US-10358506-B2 · Jul 23, 2019 · US
Terminal-modified conjugated diene polymer, rubber composition, rubber product and method for manufacturing terminal-modified conjugated diene polymer
US-2019161571-A1 · May 30, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08F4/6192?
- CPC C08F4/6192 is the Cooperative Patent Classification code for “containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring.”
- How many patents are filed under CPC C08F4/6192 (containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring)?
- Our database includes 27 publications tagged with this CPC code.
- Is patent activity under CPC C08F4/6192 growing?
- Publication counts under this code: 1 in 2024 vs 1 in 2025 (latest complete years).