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:
Dec. 05, 1978
Filed:
May. 08, 1978
Applicant:
Inventors:
Fujio Komorita, Hachioji, JP;
Muneo Nakahara, Sagamihara, JP;
Assignee:
Kabushiki Kaisha Ohara Kogaku Garasu Seizosho, Sagamihara, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C / ; C03C / ;
U.S. Cl.
CPC ...
106 53 ; 106 54 ; 106 / ;
Abstract
An optical glass consisting basically of a B.sub.2 O.sub.3 -La.sub.2 O.sub.3 - ZrO.sub.2 -Nb.sub.2 O.sub.5 -PbO-BaO (and/or ZnO) system is free from a poisonous CdO or ThO.sub.2 component and has an excellent light transmission property in a transition region from an ultraviolet portion to a visible portion as compared with conventional optical glasses having the same optical properties.