Photochromic composition
US4134853A · kind A · utility
17Cited by
7References
9Claims
0Family size
Inventors
Key dates
| Filing date | Dec 30, 1976 |
| Grant date | Jan 16, 1979 |
| Priority date | — |
| Expiry date | Dec 30, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/705
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A photochromic composition consisting essentially of titanium dioxide, ferric oxide and lead nitrate. This photochromic compositon can be combined with moldable materials such as a plastisol and formed into toys, such as dolls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.