Method for preparing oligomerization catalyst system and oligomerization catalyst system prepared thereby
US-2018339289-A1 · Nov 29, 2018 · US
Chromium, molybdenum, tungsten or compounds thereof
Chromium, molybdenum, tungsten 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 | C08F4/69 |
| Official title | Chromium, molybdenum, tungsten or compounds thereof |
| Display label | Chromium, molybdenum, tungsten or compounds thereof |
| Total patents | 163 |
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 | 15 |
| 2016 | 16 |
| 2017 | 14 |
| 2018 | 17 |
| 2019 | 26 |
| 2020 | 27 |
| 2021 | 14 |
| 2022 | 14 |
| 2023 | 10 |
| 2024 | 7 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Ligand compound, catalyst system for olefin oligomerization, and method for oligomerizing olefins using the same
US-10131723-B2 · Nov 20, 2018 · US
Chromium-Based Catalyst Compositions for Olefin Polymerization
US-2018327521-A1 · Nov 15, 2018 · US
Ligand compound, catalyst system for olefin oligomerization, and method for oligomerizing olefins using the same
US-2018327528-A1 · Nov 15, 2018 · US
Catalyst for Ring Expansion Metathesis Polymerization of Cyclic Monomers
US-2018257065-A1 · Sep 13, 2018 · US
Catalyst system for olefin oligomerization and method for oligomerizing olefins using the same
US-2018229226-A1 · Aug 16, 2018 · US
Method for oligomerization of olefins (amended)
US-2018155254-A1 · Jun 7, 2018 · US
Polymerization process for the production of high density polyethylene
US-9988467-B2 · Jun 5, 2018 · US
Ligand compound, organic chromium compound, catalyst system for olefin oligomerization, and method for oligomerizing olefins using the same
US-2018086860-A1 · Mar 29, 2018 · US
Hybrid supported catalyst system and method of preparing polyolefin using the same
US-2018072827-A1 · Mar 15, 2018 · US
Method for oligomerization of ethylene
US-9896392-B2 · Feb 20, 2018 · US
Catalyst composition and method of preparing polyolefin using the same
US-2018030166-A1 · Feb 1, 2018 · US
Long chain branched polymers and methods of making same
US-9879101-B2 · Jan 30, 2018 · US
Catalyst system for the polymerisation and/or oligomerisation of olefins and process utilizing the catalyst system
US-9879100-B2 · Jan 30, 2018 · US
Method for olefin oligomerization
US-2018009727-A1 · Jan 11, 2018 · US
Deactivator and method for decreasing by-products in olefin oligomerization using the same
US-2017305811-A1 · Oct 26, 2017 · US
Polyolefin production with chromium-based catalysts
US-2017274356-A1 · Sep 28, 2017 · US
Method for oligomerizing olefin (as amended)
US-2017267603-A1 · Sep 21, 2017 · US
Ligand compound, catalyst system for olefin oligomerization, and method for oligomerizing olefins using the same
US-2017260305-A1 · Sep 14, 2017 · US
Ligand compound, organic chromium compound, catalyst system for ethylene oligomerization, preparation method thereof, and ethylene oligomerization method using the same
US-9731282-B2 · Aug 15, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08F4/69?
- CPC C08F4/69 is the Cooperative Patent Classification code for “Chromium, molybdenum, tungsten or compounds thereof.”
- How many patents are filed under CPC C08F4/69 (Chromium, molybdenum, tungsten or compounds thereof)?
- Our database includes 163 publications tagged with this CPC code.
- Is patent activity under CPC C08F4/69 growing?
- Publication counts under this code: 7 in 2024 vs 3 in 2025 (latest complete years).