Insulating layer for multilayer printed circuit board, multilayer printed circuit board comprising same, and method for producing same
US-12313973-B2 · May 27, 2025 · US
Two nitrogen atoms
Two nitrogen atoms · 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 | C07D251/48 |
| Official title | Two nitrogen atoms |
| Display label | Two nitrogen atoms |
| Total patents | 61 |
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 | 9 |
| 2017 | 15 |
| 2018 | 3 |
| 2019 | 7 |
| 2020 | 6 |
| 2021 | 5 |
| 2022 | 6 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Cycloolefin substituted heteroaromatic compounds and their use
US-12234211-B2 · Feb 25, 2025 · US
Compound for capping layer and organic light emitting device including same
US-2024251591-A1 · Jul 25, 2024 · US
Diaminotriazine compounds
US-2024101521-A1 · Mar 28, 2024 · US
Cyano-pyrimidine inhibitors of egfr/her2
US-2023137932-A1 · May 4, 2023 · US
Cycloolefin substituted heteroaromatic compounds and their use
US-2022372005-A1 · Nov 24, 2022 · US
Therapeutically active compounds and their methods of use
US-2022354856-A1 · Nov 10, 2022 · US
Biguanide derivatives and their rearrangement products for use in the treatment of cancer
US-11440906-B2 · Sep 13, 2022 · US
Insulating layer for multilayer printed circuit board, multilayer printed circuit board comprising same, and method for producing same
US-2022279663-A1 · Sep 1, 2022 · US
Cycloolefin substituted heteroaromatic compounds and their use
US-11414390-B2 · Aug 16, 2022 · US
Process for preparation of Siponimod, its salts and solid state forms thereof
US-11390583-B2 · Jul 19, 2022 · US
Cycloolefin substituted heteroaromatic compounds and their use
US-2021363115-A2 · Nov 25, 2021 · US
Aryl hydrocarbon receptor antagonists and methods of use
US-2021220408-A1 · Jul 22, 2021 · US
Cycloolefin substituted heteroaromatic compounds and their use
US-2021163426-A1 · Jun 3, 2021 · US
Therapeutically active compounds and their methods of use
US-10946023-B2 · Mar 16, 2021 · US
Diaminotriazine derivatives as herbicides
US-10941122-B2 · Mar 9, 2021 · US
Diaminotriazine compounds
US-2020383329-A1 · Dec 10, 2020 · US
Biguanide derivatives and their rearrangement products for use in the treatment of cancer
US-2020308156-A1 · Oct 1, 2020 · US
Process for preparation of siponimod, its salts and solid state forms thereof
US-2020290961-A1 · Sep 17, 2020 · US
1,3,5-triazine derivative and method of using same
US-10745383-B2 · Aug 18, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07D251/48?
- CPC C07D251/48 is the Cooperative Patent Classification code for “Two nitrogen atoms.”
- How many patents are filed under CPC C07D251/48 (Two nitrogen atoms)?
- Our database includes 61 publications tagged with this CPC code.
- Is patent activity under CPC C07D251/48 growing?
- Publication counts under this code: 2 in 2024 vs 3 in 2025 (latest complete years).