Compounds, compositions, methods of using, and methods for preparing compounds
US-12377069-B2 · Aug 5, 2025 · US
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Quinone imines
Quinone imines · 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 | C07C251/22 |
| Official title | Quinone imines |
| Display label | Quinone imines |
| Total patents | 9 |
Filing trend
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 | 1 |
| 2018 | 1 |
| 2021 | 1 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Compounds, compositions, methods of using, and methods for preparing compounds
US-2024173288-A1 · May 30, 2024 · US
Compounds, compositions, methods of using, and methods for preparing compounds
US-2021267932-A1 · Sep 2, 2021 · US
Mass spectrometric identification and/or quantitation of catecholamines using aminopyrazoles
US-9964552-B2 · May 8, 2018 · US
N-(4-(bis(4-(dimethylamino)phenyl)methylene)-8-(dimethylamino)
US-9567291-B2 · Feb 14, 2017 · US
Mass spectrometric identification and/or quantitation of catecholamines using aminopyrazoles
US-2016305969-A1 · Oct 20, 2016 · US
Use of zwitterionic molecules for forming a hole or electron transport layer
US-9349958-B2 · May 24, 2016 · US
N-(4-(bis(4-(dimethylamino)phenyl)methylene)-8-(dimethylamino)
US-2016102048-A1 · Apr 14, 2016 · US
Condensed polycyclic aromatic compound, production process of same, and positive electrode active material for lithium ion secondary battery containing same
US-8927157-B2 · Jan 6, 2015 · US