Process for preparation of 2-chloro-3-fluoro-4-alkoxy-anilines and 2-fluoro-3-chlorophenol
US-2026070871-A1 · Mar 12, 2026 · US
containing nitrogen-oxide bonds
containing nitrogen-oxide bonds · 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 | C07C291/02 |
| Official title | containing nitrogen-oxide bonds |
| Display label | containing nitrogen-oxide bonds |
| Total patents | 36 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 6 |
| 2017 | 7 |
| 2018 | 4 |
| 2019 | 6 |
| 2020 | 3 |
| 2021 | 3 |
| 2022 | 1 |
| 2024 | 2 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Tunable nitric oxide-releasing macromolecules having multiple nitric oxide donor structures
US-12503428-B2 · Dec 23, 2025 · US
Fragrance compounds
US-2024294470-A1 · Sep 5, 2024 · US
Enamine n-oxides: synthesis and application to hypoxia-responsive prodrugs and imaging agents
US-2024208898-A1 · Jun 27, 2024 · US
NO containing compositions
US-11344571-B2 · May 31, 2022 · US
Tunable nitric oxide-releasing macromolecules having multiple nitric oxide donor structures
US-2021395191-A1 · Dec 23, 2021 · US
Tunable nitric oxide-releasing macromolecules having multiple nitric oxide donor structures
US-11124476-B2 · Sep 21, 2021 · US
Process for the preparation of quinolone based compounds
US-10899713-B2 · Jan 26, 2021 · US
Reactive oxygen species-sensitive nitric oxide synthase inhibitors for the treatment of ischemic stroke
US-10829441-B2 · Nov 10, 2020 · US
NO containing compositions
US-2020147127-A1 · May 14, 2020 · US
Tunable nitric oxide-releasing macromolecules having multiple nitric oxide donor structures
US-2020055815-A1 · Feb 20, 2020 · US
Process for the preparation of quinolone based compounds
US-2019359574-A1 · Nov 28, 2019 · US
NO containing compositions
US-10449215-B2 · Oct 22, 2019 · US
Tunable nitric oxide-releasing macromolecules having multiple nitric oxide donor structures
US-10435357-B2 · Oct 8, 2019 · US
Reactive Oxygen Species-Sensitive Nitric Oxide Synthase Inhibitors for the Treatment of Ischemic Stroke
US-2019144377-A1 · May 16, 2019 · US
Tunable nitric oxide-releasing macromolecules having multiple nitric oxide donor structures
US-2019135738-A1 · May 9, 2019 · US
Tunable nitric oxide-releasing macromolecules having multiple nitric oxide donor structures
US-10196349-B2 · Feb 5, 2019 · US
NO containing compositions
US-2018264033-A1 · Sep 20, 2018 · US
Rubber composition and tire
US-2018118856-A1 · May 3, 2018 · US
Compound, modified polymer, rubber composition, tire, and conveyor belt
US-9932417-B1 · Apr 3, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C291/02?
- CPC C07C291/02 is the Cooperative Patent Classification code for “containing nitrogen-oxide bonds.”
- How many patents are filed under CPC C07C291/02 (containing nitrogen-oxide bonds)?
- Our database includes 36 publications tagged with this CPC code.
- Is patent activity under CPC C07C291/02 growing?
- Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).