Organic compound, perovskite precursor solution, perovskite film, perovskite cell, and electric apparatus
US-2025386725-A1 · Dec 18, 2025 · US
with nitrogen atoms of azo groups bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C07C245/04 |
| Official title | with nitrogen atoms of azo groups bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings |
| Display label | with nitrogen atoms of azo groups bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings |
| Total patents | 19 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 3 |
| 2017 | 5 |
| 2018 | 1 |
| 2019 | 4 |
| 2021 | 1 |
| 2023 | 3 |
| 2025 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-2025386725-A1 · Dec 18, 2025 · US
US-2023391714-A1 · Dec 7, 2023 · US
US-2023193482-A1 · Jun 22, 2023 · US
US-11648239-B2 · May 16, 2023 · US
US-2021299106-A1 · Sep 30, 2021 · US
US-2019389817-A1 · Dec 26, 2019 · US
US-2019336485-A1 · Nov 7, 2019 · US
US-10301270-B2 · May 28, 2019 · US
US-10238639-B2 · Mar 26, 2019 · US
US-2018169074-A1 · Jun 21, 2018 · US
US-9783491-B2 · Oct 10, 2017 · US
US-9731265-B2 · Aug 15, 2017 · US
US-2017152234-A1 · Jun 1, 2017 · US
US-9556195-B2 · Jan 31, 2017 · US
US-9546133-B2 · Jan 17, 2017 · US
US-2016152556-A1 · Jun 2, 2016 · US
US-9346963-B2 · May 24, 2016 · US
US-2016023992-A1 · Jan 28, 2016 · US
US-9216948-B2 · Dec 22, 2015 · US