UV-ray sensitive composition and element for measuring UV-ray dose
US4829187A · kind A · utility
28Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 1987 |
| Grant date | May 9, 1989 |
| Priority date | — |
| Expiry date | Jul 8, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/675
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A UV-ray sensitive composition, comprising a photo activator forming a free radical by the irradiation of UV-rays, a discoloring agent which exhibits a color change in visible region of spectrum through the action of this free radical, and a UV-ray absorber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.