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:
Sep. 27, 2022
Filed:
Apr. 09, 2019
Applicant:
Schott Ag, Mainz, DE;
Inventors:
Assignee:
Schott AG, Mainz, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C 3/093 (2006.01); A61J 1/14 (2006.01); A61J 1/06 (2006.01); C03B 23/09 (2006.01); C03B 25/02 (2006.01); C03C 3/078 (2006.01); C03C 3/083 (2006.01); C03C 3/085 (2006.01); C03C 3/089 (2006.01); C03C 3/091 (2006.01); C03C 4/20 (2006.01); C03C 3/11 (2006.01);
U.S. Cl.
CPC ...
C03C 3/093 (2013.01); A61J 1/065 (2013.01); A61J 1/1468 (2015.05); C03B 23/09 (2013.01); C03B 25/02 (2013.01); C03C 3/078 (2013.01); C03C 3/083 (2013.01); C03C 3/085 (2013.01); C03C 3/089 (2013.01); C03C 3/091 (2013.01); C03C 3/11 (2013.01); C03C 4/20 (2013.01); C03C 2203/52 (2013.01);
Abstract
A method for producing a glass article having high hydrolytic resistance is provided. A glass tube consisting of borosilicate glass and having an AlOcontent of less than 1 weight-%, a ZrOcontent of 2-12 weight-%, and a glass transition temperature Tis reshaped into a glass article and is subsequently subjected to a thermal post-treatment. To reduce the alkali release of the glass article, the glass article is subjected to a treatment temperature of T≥T+5° K over a treatment time of t≥5 min and is subsequently cooled during the thermal post-treatment.