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:
Jul. 25, 2000
Filed:
Apr. 30, 1998
Applicant:
Inventors:
Bartholomeus Verlinden, Tongeren, BE;
Pascale Steenhoudt, Arquennes, BE;
Assignee:
AGFA-Gevaert, N.V., Mortsel, BE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C / ; C03B / ; C03B / ; C03B / ; C03B / ;
U.S. Cl.
CPC ...
65 301 ; 65 3014 ; 65 325 ; 65 95 ; 65 992 ; 65148 ; 65185 ; 65193 ; 65198 ;
Abstract
This invention relates to a continuous process for producing a web of thin, chemically hardened glass that can be wound on a roll. The process comprises the steps of (i) drawing glass, containing original alkali ions, to form a web of glass having a thickness equal to or lower than 1.2 mm and having a first and second major surface; (ii) directly after or during said drawing, treating both said surfaces of said web with chemical hardening means during less than two hours, replacing said original alkali ions by alkali ions having a larger radius; and (iii) after treating both said surfaces, winding said web on a core.