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:
Aug. 06, 2019
Filed:
Jan. 15, 2015
Applicant:
Heraeus Quartz North America Llc, Buford, GA (US);
Inventors:
Assignee:
HERAEUS QUARTZ NORTH AMERICA LLC, Buford, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B 33/06 (2006.01); C03B 37/012 (2006.01); C03B 37/014 (2006.01); C03B 37/018 (2006.01); C03B 33/10 (2006.01);
U.S. Cl.
CPC ...
C03B 33/06 (2013.01); C03B 33/105 (2013.01); C03B 37/01225 (2013.01); C03B 37/01228 (2013.01); C03B 37/01466 (2013.01); C03B 37/01861 (2013.01); Y02P 40/57 (2015.11);
Abstract
A method of forming a glass preform of predetermined length comprises providing a length of glass material to be separated to form a preform length and a remaining length; forming a notch in the glass material; inducing a tensile stress in excess of the tensile strength of the glass in an area adjacent to the notch; and separating the preform length from the remaining length at the notch.