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. 21, 2010
Filed:
May. 29, 2008
Dieter Goedeke, Landshut, DE;
Peter Brix, Mainz, DE;
Dieter Goedeke, Landshut, DE;
Peter Brix, Mainz, DE;
Schott AG, Mainz, DE;
Abstract
The low melting solder glass contains, in wt. % on an oxide basis, >1-2, SiO; 5-10, BO; 4.5-12, ZnO; 79-88, BiO; 0.0, CeO; and 0.6-2, AlO, and a weight ratio of SiOto AlOof <2. The solder glass preferably contains from 80.5 to 85 wt. % of BiOand is free of lead. This solder glass has a linear thermal expansion coefficient αof <11.5×10/K and a transformation temperature Tg of <380° C. A solder glass preparation for connecting or sealing a glass part with a metal part contains the low melting solder glass and up to 20 wt. % of β-eucryptite, cordierite, mullite, willemite or zircon.