Search International and National Patent Collections

1. (WO1999006154) MEMORY DISC SUBSTRATE WITH DEFECT FREE SURFACE

Pub. No.:    WO/1999/006154    International Application No.:    PCT/US1998/015275
Publication Date: Feb 11, 1999 International Filing Date: Jul 23, 1998
IPC: B32B 17/06
G11B 5/73
G11B 5/84
G11B 23/00
Applicants: CORNING INCORPORATED
Inventors: REDDY, K. Pattabhirami
ROE, Timothy, A.
Title: MEMORY DISC SUBSTRATE WITH DEFECT FREE SURFACE
Abstract:
The present invention is directed to a defect-free magnetic memory disc substrate (1, 2). In particular, it is directed to a composite alumina-based, glass-coated, article (1, 2) with a defect free surface. Several methods for its manufacture including frit bonding, molten glass submersion and tape formation are disclosed.