The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 1992
Filed:
Jul. 17, 1990
Applicant:
Inventors:
Alfons Hausler, Obertshausen, DE;
Rainer Ludwig, Karlstein-Dettingen, DE;
Michael Geisler, Wachtersbach, DE;
Michael Jung, Kahl am Main, DE;
Assignee:
Leybold Aktiengesellschaft, Hanau I, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428 64 ; 428 65 ; 428457 ; 428913 ; 3692752 ; 346 / ; 3461351 ; 430945 ; 427162 ; 264106 ;
Abstract
An optical recording medium for an audio-video or ROM compact disc comprises a pitted translucent base material and a layer of a corrosion resistant metal or combination of metals from the group consisting of tantalum, chromium, cobalt, and nickel. For example, TaNi or CrCo can be applied to the surface, providing good adhesion, reflecting light, providing a printable surface, and not requiring any further coating such as a protective lacquer.