Photochromic thienochromene compounds
US10501477B2 · kind B2 · utility
2Cited by
13References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2015 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Mar 10, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/73
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to photochromic compounds, such as thienochromene compounds represented by the following Formulas (1a) and/or (1b). The present invention also relates to photochromic compositions and articles containing one or more such photochromic thienochromene compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.