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:
Sep. 13, 1977
Filed:
Aug. 27, 1975
Applicant:
Inventors:
Friedrich Gudden, Erlangen, DT;
Herbert Weiss, Munich, DT;
Assignee:
Siemens Aktiengesellschaft, Berlin & Munich, DT;
Primary Examiner:
Int. Cl.
CPC ...
G01T / ;
U.S. Cl.
CPC ...
250370 ; 357 52 ;
Abstract
An electro-optical transducer which encompasses, within a vacuum tube, a constructional element having an alkali metal and a constructional element having a semi-conductor. The semi-conductor constructional element is rendered insensitive with respect to alkali metals. This is achieved in that the surface of the semi-conductor is at least partly covered with a layer or coating of polyimide.