Organic electroluminescent materials and devices
US-2025263554-A1 · Aug 21, 2025 · US
One nitrogen atom
One 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 | C07D251/42 |
| Official title | One nitrogen atom |
| Display label | One nitrogen atom |
| Total patents | 35 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 5 |
| 2017 | 7 |
| 2018 | 4 |
| 2019 | 3 |
| 2021 | 1 |
| 2023 | 2 |
| 2024 | 5 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Organic electroluminescent materials and devices
US-12317745-B2 · May 27, 2025 · US
Light-emitting device including amine-containing compound, electronic apparatus including the light-emitting device, and the amine-containing compound
US-2025089563-A1 · Mar 13, 2025 · US
G-alpha-s inhibitors and uses thereof
US-2024336563-A1 · Oct 10, 2024 · US
Compound for capping layer and organic light emitting device including same
US-2024251591-A1 · Jul 25, 2024 · US
Heterocyclic compound, organic light-emitting device comprising same, and composition for organic layer
US-2024206205-A1 · Jun 20, 2024 · US
Bisdiaminophenyl compound, crosslinking agent, composition, and molded article
US-2024084102-A1 · Mar 14, 2024 · US
Polymer and triazine compound
US-2024052103-A1 · Feb 15, 2024 · US
Process for the preparation of heteroaryl-substituted sulfur(vi) compounds
US-2023399302-A1 · Dec 14, 2023 · US
Nerve cell degeneration inhibitor
US-2023120205-A1 · Apr 20, 2023 · US
Organic electroluminescent materials and organic electroluminescent devices
US-10886475-B2 · Jan 5, 2021 · US
4-cyano-benzyl carbamimidoylcarbamate derivatives and their use as AOC3 inhibitors
US-10336729-B2 · Jul 2, 2019 · US
Process for preparing a novel crystalline form of metsulfuron-methyl and use of the same
US-10336714-B2 · Jul 2, 2019 · US
4-cyano-benzyl carbamimidoylcarbamate derivatives and their use as aoc3 inhibitors
US-2019077790-A1 · Mar 14, 2019 · US
Process for preparing a novel crystalline form of iodosulfuron-methyl-sodium and use of the same
US-10059676-B2 · Aug 28, 2018 · US
Organic electroluminescent materials and devices
US-2018130956-A1 · May 10, 2018 · US
4-aryl-N-phenyl-1,3,5-triazin-2-amines containing a sulfoximine group
US-9962389-B2 · May 8, 2018 · US
Organic electroluminescent materials and organic electroluminescent devices
US-2018069183-A1 · Mar 8, 2018 · US
4-aryl-n-phenyl-1,3,5-triazin-2-amines containing a sulfoximine group
US-2017217949-A1 · Aug 3, 2017 · US
4-aryl-N-phenyl-1,3,5-triazin-2-amines containing a sulfoximine group
US-9669034-B2 · Jun 6, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07D251/42?
- CPC C07D251/42 is the Cooperative Patent Classification code for “One nitrogen atom.”
- How many patents are filed under CPC C07D251/42 (One nitrogen atom)?
- Our database includes 35 publications tagged with this CPC code.
- Is patent activity under CPC C07D251/42 growing?
- Publication counts under this code: 5 in 2024 vs 3 in 2025 (latest complete years).