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. 29, 1980
Filed:
Jun. 28, 1978
Applicant:
Inventors:
Heinz Broemer, Hermannstein, DE;
Werner Huber, Solms-Albshausen, DE;
Norbert Meinert, Solms-Albshausen, DE;
Assignee:
Ernst Leitz Wetzlar GmbH, Wetzlar, DE;
Primary Examiner:
Int. Cl.
CPC ...
C03C / ; C03C / ;
U.S. Cl.
CPC ...
106 / ; 106 52 ; 106 53 ; 106 54 ;
Abstract
Disclosed are zirconium-containing borosilicate glass compositions having a refractive index n.sub.e between 1.55 and 1.72, and Abbe number .nu..sub.e between 50 and 34 and a negative anomalous partial dispersion value .DELTA..nu..sub.e between -3.0 and -7.7. Also disclosed is a process for the production of such glass compositions.