Cyclic supported catalysts
US-2019344254-A1 · Nov 14, 2019 · US
At least two oxygen atoms present in one at least bidentate or bridging ligand
At least two oxygen atoms present 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 | B01J31/223 |
| Official title | {At least two oxygen atoms present in one at least bidentate or bridging ligand} |
| Display label | At least two oxygen atoms present in one at least bidentate or bridging ligand |
| Total patents | 131 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 9 |
| 2016 | 10 |
| 2017 | 17 |
| 2018 | 14 |
| 2019 | 20 |
| 2020 | 14 |
| 2021 | 11 |
| 2022 | 9 |
| 2023 | 7 |
| 2024 | 9 |
| 2025 | 10 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Oligomerization Catalyst and Method for Preparing Ethylene Oligomer Using Same
US-2019308178-A1 · Oct 10, 2019 · US
Production of olefin dimers
US-10358397-B2 · Jul 23, 2019 · US
Five-coordinate bis-phenylphenoxy catalysts for the preparation of ethylene-based polymers
US-10301412-B2 · May 28, 2019 · US
Catalyst compositions and use thereof
US-10280234-B2 · May 7, 2019 · US
Process for the preparation of lightly-branched hydrophobes and the corresponding surfactants and applications thereof
US-2019112250-A1 · Apr 18, 2019 · US
Bridged bi-aromatic ligands and transition metal compounds prepared therefrom
US-10252967-B2 · Apr 9, 2019 · US
Metal Compound Chemically Anchored Colloidal Particles and Methods of Production and Use Thereof
US-2019100678-A1 · Apr 4, 2019 · US
Zirconium- and hafnium-based metal-organic frameworks as epoxide ring-opening catalysts
US-10233145-B2 · Mar 19, 2019 · US
Production of Olefin Dimers
US-2019002366-A1 · Jan 3, 2019 · US
Metal compound chemically anchored colloidal particles and methods of production and use thereof
US-10160884-B2 · Dec 25, 2018 · US
Transition metal tungsten oxy-hydroxide
US-2018320092-A1 · Nov 8, 2018 · US
Titanium oxide particle, composition for forming photocatalyst, and photocatalyst
US-2018311643-A1 · Nov 1, 2018 · US
Copper-doped iron metal-organic framework, preparation method thereof, and application method for activation of persulfate to treat organic wastewater
US-10105694-B2 · Oct 23, 2018 · US
Procatalyst and polymerization process using the same
US-2018265604-A1 · Sep 20, 2018 · US
Catalyst for Ring Expansion Metathesis Polymerization of Cyclic Monomers
US-2018257065-A1 · Sep 13, 2018 · US
Transition metal tungsten oxy-hydroxide
US-10053637-B2 · Aug 21, 2018 · US
Platinum (II) diene complexes with chelating dianionic ligands and their use in hydrosilylation reactions
US-10047108-B2 · Aug 14, 2018 · US
Copper-doped iron metal-organic framework, preparation method thereof, and application method for activation of persulfate to treat organic wastewater
US-2018185828-A1 · Jul 5, 2018 · US
Catalyst Compositions and Use Thereof
US-2018134817-A1 · May 17, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01J31/223?
- CPC B01J31/223 is the Cooperative Patent Classification code for “At least two oxygen atoms present in one at least bidentate or bridging ligand.”
- How many patents are filed under CPC B01J31/223 (At least two oxygen atoms present in one at least bidentate or bridging ligand)?
- Our database includes 131 publications tagged with this CPC code.
- Is patent activity under CPC B01J31/223 growing?
- Publication counts under this code: 9 in 2024 vs 10 in 2025 (latest complete years).