Benzophenanthridine Alkaloids and Their Methods of Use
US-2024139162-A1 · May 2, 2024 · US
the condensed system containing two rings with oxygen as ring hetero atom and one ring with nitrogen as ring hetero atom
the condensed system containing two rings with oxygen as ring hetero atom and one ring with nitrogen as ring hetero atom · 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 | C07D491/153 |
| Official title | the condensed system containing two rings with oxygen as ring hetero atom and one ring with nitrogen as ring hetero atom |
| Display label | the condensed system containing two rings with oxygen as ring hetero atom and one ring with nitrogen as ring hetero atom |
| Total patents | 98 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 4 |
| 2017 | 7 |
| 2018 | 4 |
| 2019 | 7 |
| 2020 | 13 |
| 2021 | 9 |
| 2022 | 19 |
| 2023 | 11 |
| 2024 | 13 |
| 2025 | 5 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Organic light emitting diode having high efficiency
US-11532792-B2 · Dec 20, 2022 · US
Luminescence device and compound including nitrogen for same
US-2022344596-A1 · Oct 27, 2022 · US
Compositions and methods for inhibiting viral infection
US-11427595-B2 · Aug 30, 2022 · US
Treatment of neurological disorders
US-2022135551-A1 · May 5, 2022 · US
Arylamine Compound and Use Thereof in Photoelectric Devices
US-2022123222-A1 · Apr 21, 2022 · US
Organic electroluminescent material and application thereof
US-2022115599-A1 · Apr 14, 2022 · US
Organic heterocyclic compound and light-emitting diode comprising same
US-11279693-B2 · Mar 22, 2022 · US
Isocarbostyril alkaloids and functionalization thereof
US-2022064176-A1 · Mar 3, 2022 · US
Functionalized heterocycles as antiviral agents
US-11236108-B2 · Feb 1, 2022 · US
Cyclic peroxides as prodrugs for selective delivery of agents
US-2022017559-A1 · Jan 20, 2022 · US
Analogues and derivatives of cephalotaxine and methods for making and using the compounds
US-2022009944-A1 · Jan 13, 2022 · US
Materials for organic electroluminescent devices
US-2022006030-A1 · Jan 6, 2022 · US
Photoelectric conversion element, optical sensor, imaging element, and compound
US-11201294-B2 · Dec 14, 2021 · US
Photoelectric conversion element, imaging element, optical sensor comprising a photoelectric conversion film containing a predetermined compound, and compound
US-11171165-B2 · Nov 9, 2021 · US
4-azapodophylotoxins compounds
US-11098052-B2 · Aug 24, 2021 · US
Piperidinone Derivatives as MDM2 Inhibitors for the Treatment of Cancer
US-2021179560-A1 · Jun 17, 2021 · US
Cyclic peroxides as prodrugs for selective delivery of agents
US-11014955-B2 · May 25, 2021 · US
Functionalized heterocycles as antiviral agents
US-2021079014-A1 · Mar 18, 2021 · US
Heteroacene and organic electroluminescence device using the same
US-2021040112-A1 · Feb 11, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07D491/153?
- CPC C07D491/153 is the Cooperative Patent Classification code for “the condensed system containing two rings with oxygen as ring hetero atom and one ring with nitrogen as ring hetero atom.”
- How many patents are filed under CPC C07D491/153 (the condensed system containing two rings with oxygen as ring hetero atom and one ring with nitrogen as ring hetero atom)?
- Our database includes 98 publications tagged with this CPC code.
- Is patent activity under CPC C07D491/153 growing?
- Publication counts under this code: 13 in 2024 vs 5 in 2025 (latest complete years).