Process for the ruthenium-catalysed hydrogenation of aldehyde acetals
US-2025206691-A1 · Jun 26, 2025 · 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 | C07C33/22 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 60 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 7 |
| 2017 | 6 |
| 2018 | 8 |
| 2019 | 10 |
| 2020 | 3 |
| 2021 | 4 |
| 2022 | 4 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Nanohybrid catalyst for hydrogenation reactions
US-2025091041-A1 · Mar 20, 2025 · US
Highly active and highly selective copper extrudate catalysts
US-2025025861-A1 · Jan 23, 2025 · US
Highly active and highly selective copper extrudate catalysts
US-12138620-B2 · Nov 12, 2024 · US
Reduction by a silane in the presence of zinc catalyst
US-2024010585-A1 · Jan 11, 2024 · US
Catalyst containing activated carbon adsorbed with ruthenium complex, and method for producing reduction product using same
US-2023285945-A1 · Sep 14, 2023 · US
Hydrogenation of esters to alcohols in the presence of a Ru-PNN complex
US-11708316-B2 · Jul 25, 2023 · US
Continuous flow synthesis of ibuprofen
US-11639326-B2 · May 2, 2023 · US
Reaction system, catalyst and method for preparing β-phenylethanol
US-11389780-B2 · Jul 19, 2022 · US
Imines with tunable nucleophilicity and steric properties through metal coordination: applications as ligands and metalloorganocatalysts
US-11260380-B2 · Mar 1, 2022 · US
Methods of chemical recovery for propylene oxide-styrene monomer processes
US-11247962-B2 · Feb 15, 2022 · US
Highly active and highly selective copper extrudate catalysts
US-2022023843-A1 · Jan 27, 2022 · US
Polymer-supported metal
US-11185851-B2 · Nov 30, 2021 · US
Selective reduction of aldehydes and ketones
US-10975009-B2 · Apr 13, 2021 · US
Imines with tunable nucleophilicity and steric properties through metal coordination: applications as ligands and metalloorganocatalysts
US-10926249-B2 · Feb 23, 2021 · US
Method for producing alcohol compound
US-10919829-B2 · Feb 16, 2021 · US
Methods of chemical recovery for propylene oxide-styrene monomer processes
US-2020354300-A1 · Nov 12, 2020 · US
Reaction system, catalyst and method for preparing beta-phenylethanol
US-2020298198-A1 · Sep 24, 2020 · US
Preparation and use of copper containing hydrogenation catalyst
US-10766025-B2 · Sep 8, 2020 · US
Method for producing alcohol compound
US-2019300465-A1 · Oct 3, 2019 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C33/22?
- CPC C07C33/22 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
- How many patents are filed under CPC C07C33/22 (Chemistry & Metallurgy)?
- Our database includes 60 publications tagged with this CPC code.
- Is patent activity under CPC C07C33/22 growing?
- Publication counts under this code: 2 in 2024 vs 3 in 2025 (latest complete years).