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:
Dec. 21, 1999
Filed:
Apr. 28, 1998
Applicant:
Inventors:
Assignee:
Nippon Sheet Glass Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428192 ; 428 34 ; 428 81 ; 428410 ; 428426 ; 428432 ; 428920 ; 52204591 ; 5278411 ; 5280011 ;
Abstract
A method of finishing an edge of a sheet glass is disclosed. The method includes a first grinding step for grinding an edge of a sheet glass so as to provide the edge with an outwardly convex curved shape, and a finishing step for finishing a bordering portion which has been formed by the first grinding step between the curved edge and each flat side face of the sheet glass, so as to provide this bordering portion with a greater smoothness than smoothness provided by the first grinding step. A heat-tempered sheet glass using the method and a fire-resistant construction material using this heat-tempered sheet glass are also disclosed.