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:
Nov. 27, 1984
Filed:
May. 31, 1983
Applicant:
Inventors:
Georg Gliemeroth, Mainz-Finthen, DE;
Uwe Eichhorn, Mainz-Finthen, DE;
Eva Holzel, Mainz-Finthen, DE;
Ludwig Ross, Klein-Winternheim, DE;
Hans-Georg Krolla, Mainz, DE;
Burkhard Speit, Mainz-Mombach, DE;
Volkmar Geiler, Mainz-Finthen, DE;
Hans-Jurgen Hoffmann, Mainz-Finthen, DE;
Assignee:
Schott-Glaswerke, Mainz, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C / ;
U.S. Cl.
CPC ...
501 13 ; 65117 ; 501903 ;
Abstract
A new phototropic glass in which the phototropic properties arise from precipitations of silver halide and which in the unirradiated condition is slightly tinted or completely colorless while showing a brown color in the light-exposed condition, comprises, in known phototropic glass compositions, an additional content of at least 0.001 wt % of TeO.sub.2 and/or Yb.sub.2 O.sub.3.