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:
Apr. 02, 1985
Filed:
Feb. 10, 1983
Applicant:
Inventors:
Georg Gliemeroth, Mainz-Finthen, DE;
Ludwig Ross, Klein-Winternheim, DE;
Burkhard Speit, Mainz-Momback, DE;
Volkmar Geiler, Mainz-Finthen, DE;
Hans-Georg Krolla, Mainz, DE;
Lothar Meckel, Oestrich-Winkel, DE;
Assignee:
Schott Glaswerke, Mainz, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C / ; C03C / ; C03C / ;
U.S. Cl.
CPC ...
501 73 ; 501 77 ; 501 79 ; 501903 ;
Abstract
A spectacle glass which is colorless in the visible spectrum range, not transmissive in the ultraviolet spectrum range below 350 nm, has a refractive index n.sub.d higher than 1.56 and an Abbe number of more than 45, and which has an extremely low density, has the following composition (in % by weight):