Process for producing polydienes
US-9796800-B2 · Oct 24, 2017 · US
Chemistry & Metallurgy
Chemistry & Metallurgy · 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 | C08F4/545 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 238 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 20 |
| 2016 | 28 |
| 2017 | 20 |
| 2018 | 19 |
| 2019 | 19 |
| 2020 | 27 |
| 2021 | 28 |
| 2022 | 24 |
| 2023 | 18 |
| 2024 | 16 |
| 2025 | 15 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Polymerization catalyst composition, method for producing synthetic polyisoprene, and synthetic polyisoprene
US-9796801-B2 · Oct 24, 2017 · US
Functionalized polymer, rubber composition, and pneumatic tire
US-9790289-B1 · Oct 17, 2017 · US
Conjugated diene-based polymer
US-2017275401-A1 · Sep 28, 2017 · US
Catalyst composition for conjugated diene polymerization
US-2017275391-A1 · Sep 28, 2017 · US
Method for manufacturing conjugated diene polymer, conjugated diene polymer, rubber composition, and tire
US-2017233504-A1 · Aug 17, 2017 · US
Method for manufacturing polymer composition and the polymer composition
US-9714338-B2 · Jul 25, 2017 · US
Method for manufacturing a hydroxy group terminated olefin or conjugated diene polymer
US-9688798-B2 · Jun 27, 2017 · US
Metallic Complex Catalyst, Polymerization Methods Employing Same And Polymer Products Thereof
US-2017114170-A1 · Apr 27, 2017 · US
Metallic Complex Catalyst And Polymerization Methods Employing Same
US-2017114171-A1 · Apr 27, 2017 · US
Catalyst composition for polymerizing conjugated diene monomer
US-9556285-B2 · Jan 31, 2017 · US
Polymer and method for producing same, rubber composition containing polymer, and tire having rubber composition
US-9540464-B2 · Jan 10, 2017 · US
Bis-imine complex of lanthanides, catalytic system comprising said bis-imine complex and process for the (co)polymerization of conjugated dienes
US-9512252-B2 · Dec 6, 2016 · US
Process for producing polydienes
US-9505859-B2 · Nov 29, 2016 · US
Polymer, rubber composition containing polymer, crosslinked rubber composition obtained by crosslinking rubber composition, and tire having crosslinked rubber composition
US-9499647-B2 · Nov 22, 2016 · US
Modified high-cis isoprene polymer, method for producing the same, and tire containing aforementioned polymer
US-9481746-B2 · Nov 1, 2016 · US
Polymers functionalized with heterocyclic nitrile compounds
US-9469741-B2 · Oct 18, 2016 · US
Lanthanide complex catalyst and polymerization method employing same
US-9469658-B2 · Oct 18, 2016 · US
Processes For The Preparation Of High-Cis Polydienes
US-2016264698-A1 · Sep 15, 2016 · US
Polymers Functionalized With Imine Compounds Containing A Cyano Group
US-2016237179-A1 · Aug 18, 2016 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08F4/545?
- CPC C08F4/545 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
- How many patents are filed under CPC C08F4/545 (Chemistry & Metallurgy)?
- Our database includes 238 publications tagged with this CPC code.
- Is patent activity under CPC C08F4/545 growing?
- Publication counts under this code: 16 in 2024 vs 15 in 2025 (latest complete years).