Cationic lipid compound, and preparation method therefor and use thereof
US-12569449-B1 · Mar 10, 2026 · US
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Ketones; Ketenes; Dimeric ketenes (heterocyclic compounds C07D, e.g. beta-lactones C07D305/12); Ketonic chelates
Ketones; Ketenes; Dimeric ketenes (heterocyclic compounds C07D, e.g. beta-lactones C07D305/12); Ketonic chelates · 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 | C07C49/00 |
| Official title | Ketones; Ketenes; Dimeric ketenes (heterocyclic compounds C07D, e.g. beta-lactones C07D305/12); Ketonic chelates |
| Display label | Ketones; Ketenes; Dimeric ketenes (heterocyclic compounds C07D, e.g. beta-lactones C07D305/12); Ketonic chelates |
| Total patents | 19 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 2 |
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 1 |
| 2021 | 4 |
| 2023 | 1 |
| 2024 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Synthesis of coelenterazine synthesis intermediate
US-11926624-B2 · Mar 12, 2024 · US
Use of marine algae for co-producing alkenones, alkenone derivatives, and co-products
US-11634738-B2 · Apr 25, 2023 · US
Use of marine algae for co-producing alkenones, alkenone derivatives, and co-products
US-2021355512-A1 · Nov 18, 2021 · US
Synthesis of coelenterazine synthesis intermediate
US-2021332044-A1 · Oct 28, 2021 · US
Use of marine algae for co-producing alkenones, alkenone derivatives, and co-products
US-11118199-B2 · Sep 14, 2021 · US
Synthesis of coelenterazine
US-11078200-B2 · Aug 3, 2021 · US
Synthesis of coelenterazine
US-2020239471-A1 · Jul 30, 2020 · US
Use of marine algae for co-producing alkenones, alkenone derivatives, and co-products
US-2019161777-A1 · May 30, 2019 · US
Use of marine algae for co-producing alkenones, alkenone derivatives, and co-products
US-10208321-B2 · Feb 19, 2019 · US
Use of marine algae for co-producing alkenones, alkenone derivatives, and co-products
US-2018230501-A1 · Aug 16, 2018 · US
Use of marine algae for co-producing alkenones, alkenone derivatives, and co-products
US-9970034-B2 · May 15, 2018 · US
Heterocyclic coupling catalysts and methods related thereto
US-9700881-B2 · Jul 11, 2017 · US
Heterocyclic Coupling Catalysts and Methods Related Thereto
US-2016243534-A1 · Aug 25, 2016 · US
Catalysts for hydrodeoxygenation of oxygenated hydrocarbons
US-9314778-B2 · Apr 19, 2016 · US
Method of CO and/or CO2 hydrogenation using doped mixed-metal oxides
US-9150476-B1 · Oct 6, 2015 · US
Catalysts for hydrodeoxygenation of oxygenated hydrocarbons
US-2015141667-A1 · May 21, 2015 · US
Use of marine algae for co-producing alkenones, alkenone derivatives, and co-products
US-2015140619-A1 · May 21, 2015 · US
Catalysts for hydrodeoxygenation of oxygenated hydrocarbons
US-8946458-B2 · Feb 3, 2015 · US