Reaction sequence for the synthesis of nootkatone, dihydronootkatone, and tetrahydronootkatone
US-2018362431-A1 · Dec 20, 2018 · US
combined with dehydration
combined with dehydration · 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 | C07C45/74 |
| Official title | combined with dehydration |
| Display label | combined with dehydration |
| Total patents | 141 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 19 |
| 2016 | 16 |
| 2017 | 19 |
| 2018 | 14 |
| 2019 | 17 |
| 2020 | 9 |
| 2021 | 8 |
| 2022 | 10 |
| 2023 | 11 |
| 2024 | 6 |
| 2025 | 9 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Economical production of 2-propylheptanol
US-2018319727-A1 · Nov 8, 2018 · US
Methods for producing cyclic and acyclic ketones
US-2018170824-A1 · Jun 21, 2018 · US
Transfer-hydrogenation process
US-9988329-B1 · Jun 5, 2018 · US
Integrated process for simultaneous production of oxo-alcohols and plasticizers
US-9926246-B2 · Mar 27, 2018 · US
Method for preparing 3-trifluoromethyl chalcones
US-2018057468-A1 · Mar 1, 2018 · US
Guerbet alcohols and methods for preparing and using same
US-9840449-B2 · Dec 12, 2017 · US
Method for preparing 3-trifluoromethyl chalcones
US-9834523-B2 · Dec 5, 2017 · US
Methods for producing fuels, gasoline additives, and lubricants using amine catalysts
US-2017327448-A1 · Nov 16, 2017 · US
Synthesis of fuels and feedstocks
US-9783477-B2 · Oct 10, 2017 · US
Series of Skin Whitening (Lightening) Compounds
US-2017275224-A1 · Sep 28, 2017 · US
Method for production of 3-hydroxypropan-1-one compound, method for production of 2-propen-1-one compound and method for production of isoxazoline compound
US-9751821-B1 · Sep 5, 2017 · US
Methods for producing fuels, gasoline additives, and lubricants
US-9738617-B2 · Aug 22, 2017 · US
Method for production of 3-hydroxypropan-1-one compound, method for production of 2-propen-1-one compound and method for production of isoxazoline compound
US-2017233321-A1 · Aug 17, 2017 · US
Method for producing aromatic compound from biomass-derived acetic acid
US-9714207-B2 · Jul 25, 2017 · US
Method for preparing 3-trifluoromethyl chalcones
US-2017197925-A1 · Jul 13, 2017 · US
Series of skin-whitening (lightening) compounds
US-9682910-B2 · Jun 20, 2017 · US
Method for producing indanone derivatives
US-9676691-B2 · Jun 13, 2017 · US
Method for production of 3-hydroxypropan-1-one compound, method for production of 2-propen-1-one compound and method for production of isoxazoline compound
US-9676692-B2 · Jun 13, 2017 · US
Synthesis of diacetone alcohol and mesityl oxide
US-2017158591-A1 · Jun 8, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C45/74?
- CPC C07C45/74 is the Cooperative Patent Classification code for “combined with dehydration.”
- How many patents are filed under CPC C07C45/74 (combined with dehydration)?
- Our database includes 141 publications tagged with this CPC code.
- Is patent activity under CPC C07C45/74 growing?
- Publication counts under this code: 6 in 2024 vs 9 in 2025 (latest complete years).