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:
Apr. 13, 2004
Filed:
May. 05, 2000
Applicant:
Inventor:
Christopher H. Bajorek, Los Gatos, CA (US);
Assignee:
Asahi Glass Company, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23P 1/700 ;
U.S. Cl.
CPC ...
B23P 1/700 ;
Abstract
A method for manufacturing a glass substrate for use in magnetic disk manufacturing comprises the steps of a) forming a glass sheet; b) forming a protective sheet over one or both sides of the glass sheet; c) cutting the glass sheet into workpieces; d) cutting the workpieces into disk-shaped substrates; e) subjecting the edges of the substrates to an edge polishing process; and f) removing the protective layer. Of importance, by leaving the protective layer over the substrate, the substrate surface is protected from damage.