1,9,10-substituted phenothiazine derivatives with strained radical cations and use thereof
US-10854911-B2 · Dec 1, 2020 · US
with hydrogen atoms directly attached to the ring nitrogen atom
with hydrogen atoms directly attached to the ring nitrogen 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 | C07D279/20 |
| Official title | with hydrogen atoms directly attached to the ring nitrogen atom |
| Display label | with hydrogen atoms directly attached to the ring nitrogen atom |
| Total patents | 122 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 12 |
| 2017 | 10 |
| 2018 | 11 |
| 2019 | 13 |
| 2020 | 14 |
| 2021 | 14 |
| 2022 | 8 |
| 2023 | 6 |
| 2024 | 15 |
| 2025 | 9 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Resist composition and patterning process
US-10809617-B2 · Oct 20, 2020 · US
Polymer comprising a plurality of phenothiazine groups and methods of making the same
US-10662264-B2 · May 26, 2020 · US
Hexamethylindanes
US-2020140440-A1 · May 7, 2020 · US
Phenothiazine analogues as mitochondrial therapeutic agents
US-2020115355-A1 · Apr 16, 2020 · US
Onium salt, resist composition, and pattern forming process
US-2020102271-A1 · Apr 2, 2020 · US
Phenazine derivatives as antimicrobial agents
US-2020010432-A1 · Jan 9, 2020 · US
Methods of synthesis and/or purification of diaminophenothiazinium compounds
US-10525061-B2 · Jan 7, 2020 · US
Onium salt, chemically amplified positive resist composition, and resist pattern forming process
US-2019361350-A1 · Nov 28, 2019 · US
Nucleation layers for enhancing photocatalytic activity of titanium dioxide (TIO2) coatings
US-10486149-B2 · Nov 26, 2019 · US
Substituted phenothiazines as mitochondrial agents
US-10472340-B2 · Nov 12, 2019 · US
Rechargeable Lithium-ion Cell
US-2019305381-A1 · Oct 3, 2019 · US
Methods of chemical synthesis of substituted 10H-phenothiazine-3,7-diamine compounds
US-10323010-B2 · Jun 18, 2019 · US
Multifunctional lubricating oil base stocks and processes for preparing same
US-2019169519-A1 · Jun 6, 2019 · US
Resist composition and patterning process
US-2019155155-A1 · May 23, 2019 · US
Resist composition and patterning process
US-10295904-B2 · May 21, 2019 · US
Rechargeable lithium-ion cell
US-10249910-B2 · Apr 2, 2019 · US
Monomer, polymer, resist composition, and patterning process
US-2019079399-A1 · Mar 14, 2019 · US
Phenothiazine diaminium salts and their use
US-2019046537-A1 · Feb 14, 2019 · US
Nucleation layers for enhancing photocatalytic activity of titanium dioxide (TiO2) coatings
US-10195602-B2 · Feb 5, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07D279/20?
- CPC C07D279/20 is the Cooperative Patent Classification code for “with hydrogen atoms directly attached to the ring nitrogen atom.”
- How many patents are filed under CPC C07D279/20 (with hydrogen atoms directly attached to the ring nitrogen atom)?
- Our database includes 122 publications tagged with this CPC code.
- Is patent activity under CPC C07D279/20 growing?
- Publication counts under this code: 15 in 2024 vs 9 in 2025 (latest complete years).