Phosphine-imino-quinoline and related ligands for use in ethylene oligomerization processes
US-2024360052-A1 · Oct 31, 2024 · US
containing both nitrogen and phosphorus as complexing atoms, including e.g. phosphino moieties, in one at least bidentate or bridging ligand
containing both nitrogen and phosphorus as complexing atoms, including e.g. phosphino moieties, in one at least bidentate or bridging ligand · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B01J31/189 |
| Official title | {containing both nitrogen and phosphorus as complexing atoms, including e.g. phosphino moieties, in one at least bidentate or bridging ligand} |
| Display label | containing both nitrogen and phosphorus as complexing atoms, including e.g. phosphino moieties, in one at least bidentate or bridging ligand |
| Total patents | 277 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 22 |
| 2016 | 27 |
| 2017 | 32 |
| 2018 | 24 |
| 2019 | 46 |
| 2020 | 20 |
| 2021 | 20 |
| 2022 | 24 |
| 2023 | 22 |
| 2024 | 21 |
| 2025 | 16 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
LIGAND COMPOUND, CATALYST SYSTEM FOR OLIGOMERIZATION, AND METHOD FOR OLEFIN OLIGOMERIZATION USING THE SAME (As Amended)
US-2017369515-A1 · Dec 28, 2017 · US
Methods for the Production of Alpha,Beta-Unsaturated Carboxylic Acids and Salts Thereof
US-2017349523-A1 · Dec 7, 2017 · US
Catalyst Systems and Ethylene Oligomerization Method
US-2017349505-A1 · Dec 7, 2017 · US
Method of hydrosilylation implementing an organic catalyst derived from germylene
US-2017313729-A1 · Nov 2, 2017 · US
Phosphorus-containing catalysts
US-2017282170-A9 · Oct 5, 2017 · US
Ligand compound, catalyst system for olefin oligomerization, and method for oligomerizing olefins using the same
US-2017260305-A1 · Sep 14, 2017 · US
Method for alkylation of amines
US-9751827-B2 · Sep 5, 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
Method for producing spirooxindole derivative
US-2017158703-A9 · Jun 8, 2017 · US
Novel ruthenium complexes and their uses in processes for formation and/or hydrogenation of esters, amides and derivatives thereof
US-2017107251-A1 · Apr 20, 2017 · US
Novel nickel-based catalytic composition and use thereof in a method for the oligomerisation of olefins
US-2016367978-A1 · Dec 22, 2016 · US
Deactivation of a process by-product
US-9505675-B2 · Nov 29, 2016 · US
Catalyst system for olefin oligomerization, and method for olefin oligomerization using the same
US-9498773-B2 · Nov 22, 2016 · US
Iron(ii) catalysts containing tridentate pnp ligands, their synthesis, and use thereof
US-2016326202-A1 · Nov 10, 2016 · US
Methods for the Production of Alpha,Beta-Unsaturated Carboxylic Acids and Salts Thereof
US-2016311745-A1 · Oct 27, 2016 · US
Ligand, metal complex containing ligand, and reaction using metal complex containing ligand
US-9463451-B2 · Oct 11, 2016 · US
Phosphine ligands for catalytic reactions
US-2016263566-A1 · Sep 15, 2016 · US
Catalytic hydrogenation using complexes of base metals with tridentate ligands
US-9434666-B2 · Sep 6, 2016 · US
Methods for the production of α,β-unsaturated carboxylic acids and salts thereof
US-9416087-B2 · Aug 16, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01J31/189?
- CPC B01J31/189 is the Cooperative Patent Classification code for “containing both nitrogen and phosphorus as complexing atoms, including e.g. phosphino moieties, in one at least bidentate or bridging ligand.”
- How many patents are filed under CPC B01J31/189 (containing both nitrogen and phosphorus as complexing atoms, including e.g. phosphino moieties, in one at least bidentate or bridging ligand)?
- Our database includes 277 publications tagged with this CPC code.
- Is patent activity under CPC B01J31/189 growing?
- Publication counts under this code: 21 in 2024 vs 16 in 2025 (latest complete years).