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. 09, 1996
Filed:
Jul. 21, 1994
Applicant:
Inventors:
Martin Bruck, Hofheim am Taunus, DE;
Tilo Vaahs, Kelkheim/Taunus, DE;
Marcellus Peuckert, Hofheim am Taunus, DE;
Ude Scheunemann, Liederbach, DE;
Thomas Stehlin, Hofheim am Taunus, DE;
Jurgen Theis, Oberursel, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; B05D / ; B29D / ;
U.S. Cl.
CPC ...
385142 ; 385127 ; 385128 ; 385141 ; 385144 ; 4273762 ; 264-124 ; 264-17 ; 501 97 ; 428698 ;
Abstract
A transparent molded article for optical applications made from silicon nitride and a coating thereon of oxidic silicon nitride formed by chemical reaction of the silicon nitride with oxygen. The moldings can be shaped, depending on the area of application, to give various articles, for example optical waveguides, prisms, sensor elements or lenses, and are used in all areas where high optical demands are made.