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:
Jan. 19, 2010
Filed:
May. 19, 2006
Joerg Fechner, Mainz, DE;
Franz Ott, Konnersreuth, DE;
Joerg Fechner, Mainz, DE;
Franz Ott, Konnersreuth, DE;
Schott AG, Mainz, DE;
Abstract
The glass for a fluorescent light with a high hydrolytic resistance, which has composition, in % by weight based on oxide content of: SiO, 63-75; BO, 15-18; AlO, 3.2-4.5; NaO, 1-2; KO, 2-6; ΣNaO+KO, 3-8; MgO, 0-8; CaO, 0-10; SrO, 0-10; BaO, 0-10; ZnO, 0-5; ΣMgO+CaO+SrO+BaO+ZnO, 0-10; ZrO, 0-3; CeO, 0-10; FeO, 0-1; WO, 0-3; BiO, 0-5; MoO, 0-3; TiO, 0-10; ΣHf+Ta+W+Re+Os+Ir+Pt+La+Pr+Nd+Sm+Eu+Gd+Tb+Dy+Ho+Er+Tm+Yb+Lu in oxidic form, 0 to 5% by weight, as well as one or more conventional refining agents. The glass is characterized in that it contains no lithium and has a weight ratio of NaO to KO of less than one.