Patent · US Expired

Optical recording medium, its preparation and its use as a read only memory information carrier

US4829509A · kind A · utility

3Cited by

7References

12Claims

0Family size

Assignee

BASF SE

Inventors

Wolfgang Schrott · Cologne, DE
Peter Neumann · Wiesloch, DE
Peter Hauser · Raleigh, US
Gerhard Wagenblast · Wachenheim, DE

Key dates

Filing date	Dec 16, 1986
Grant date	May 9, 1989
Priority date	—
Expiry date	Dec 16, 2006

Classification

Technology area (CPC G)Physics
CPC primaryG11B2007/24328
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

An optical recording medium containing a storage layer and, if required, one or two substrate layers, the storage layer containing graphite as the storage material, a process for the production of the novel optical recording medium, and its use as a Read Only Memory information carrier.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.