Phosphine-imino-quinoline and related ligands for use in ethylene oligomerization processes
US-2024360052-A1 · Oct 31, 2024 · US
Iron
Iron · 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 | C07C2523/745 |
| Official title | Iron |
| Display label | Iron |
| Total patents | 356 |
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 | 28 |
| 2016 | 25 |
| 2017 | 35 |
| 2018 | 40 |
| 2019 | 38 |
| 2020 | 42 |
| 2021 | 39 |
| 2022 | 35 |
| 2023 | 25 |
| 2024 | 28 |
| 2025 | 15 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process to prepare lower olefins
US-2024182385-A1 · Jun 6, 2024 · US
Composite oxide catalyst for preparing butadiene and method of preparing the same
US-2017232426-A1 · Aug 17, 2017 · US
Catalyst for methanation of carbon oxides, preparation method of the catalyst and process for the methanation
US-9731278-B2 · Aug 15, 2017 · US
Catalyst having a helical outer shape, improving hydrodynamics in reactors
US-2017189896-A1 · Jul 6, 2017 · US
Catalysts and methods of using the same
US-9567265-B2 · Feb 14, 2017 · US
Dual catalyst system for performing a ketonisation reaction and a hydrotreatment reaction simultaneously
US-9545621-B2 · Jan 17, 2017 · US
Method for Producing Hydrocarbons by Non-Oxidative Coupling of Methane
US-2016362351-A1 · Dec 15, 2016 · US
Method for Preparing Ferrite Metal Oxide Catalyst
US-2016354764-A1 · Dec 8, 2016 · US
Process for preparing 1,3-butadiene from n-butenes by oxidative dehydrogenation
US-2016355450-A1 · Dec 8, 2016 · US
Diene-selective hydrogenation of metathesis derived olefins and unsaturated esters
US-9464258-B2 · Oct 11, 2016 · US
Process for the conversion of methane to c2+ hydrocarbons
US-2016264497-A1 · Sep 15, 2016 · US
Process and reactor for exothermal reaction
US-2016257562-A1 · Sep 8, 2016 · US
Bismuth molybdate-based catalyst having zeolite coating layer, method of preparing the same, and method of preparing 1,3-butadiene using the same
US-2016256855-A1 · Sep 8, 2016 · US
Oxidative dehydrogenation of ethane to ethylene and preparation of multimetallic mixed oxide catalyst for such process
US-9409156-B2 · Aug 9, 2016 · US
Metal catalyst composition
US-9403150-B2 · Aug 2, 2016 · US
Catalyst structure and method of fischer-tropsch synthesis
US-2016214093-A1 · Jul 28, 2016 · US
Catalyst and process for the oxidative dehydrogenation of N-butenes to butadiene
US-9399606-B2 · Jul 26, 2016 · US
Oxide catalyst and method for producing the same, and methods for producing unsaturated aldehyde, diolefin, and unsaturated nitrile
US-9364817-B2 · Jun 14, 2016 · US
Method for the oxidative dehydrogenation of n-butenes to butadiene
US-2016152530-A1 · Jun 2, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C2523/745?
- CPC C07C2523/745 is the Cooperative Patent Classification code for “Iron.”
- How many patents are filed under CPC C07C2523/745 (Iron)?
- Our database includes 356 publications tagged with this CPC code.
- Is patent activity under CPC C07C2523/745 growing?
- Publication counts under this code: 28 in 2024 vs 15 in 2025 (latest complete years).