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:
Mar. 22, 2011
Filed:
Jul. 02, 2008
Dieter Goedeke, Landshut, DE;
Susanne Schmid, Rottenburg, DE;
Dieter Goedeke, Landshut, DE;
Susanne Schmid, Rottenburg, DE;
Schott AG, Mainz, DE;
Abstract
The glass composite has a linear thermal expansion coefficient αof 1.8×10Kto 2.4×10K, a glass transformation temperature Tg of less than 650° C., and a composition, in weight percent based on oxide content, of: 5-9, BO; 1-3, NaO; 15-22, AlO; 61-68, SiO; 0.2-0.5, KO; and 5.5-8.5, MgO. It can be made by sintering a mixture of 40 to 60 wt. % of a borosilicate glass powder and 60 to 40 wt. % of a cordierite powder. The powder mixture can be used to make a glass solder for joining parts, to make a sintered body with thermal shock resistance, or for glazing or soldering PZT ceramics.