Optical recording medium
US4788562A · kind A · utility
1Cited by
6References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 15, 1987 |
| Grant date | Nov 29, 1988 |
| Priority date | — |
| Expiry date | Jan 15, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/705
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In an optical recording medium of the reflection type, the light-absorbing layer contains polypyrrole as the light-absorbing substance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.