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:
Nov. 28, 1995
Filed:
Feb. 22, 1993
Applicant:
Inventors:
Neville K Lee, Sherborn, MA (US);
Kwan Y Tan, Boston, MA (US);
Assignee:
Quantum Corporation, Milpitas, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428 644 ; 428913 ; 3692752 ; 3692754 ; 369277 ; 369283 ; 369286 ; 369288 ; 430270 ; 430945 ;
Abstract
A double-sided optical storage disk comprises a single substrate having a microstructure formed on each side surface thereof. The microstructure is in the form of grooves or pits arranged in a spiral or concentric circles. Formed on each side surface of the substrate are a reflective layer, and a transparent protective layer. The reflective layer is formed of aluminum alloy. The protective outer layer is formed of a transparent anti-corrosive material, specifically compatibly with an air-bearing, low-flying, read head, preferably silicon nitride.