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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.:

US 4893909 B1

PDFFull Text
Date of Patent:
Jan. 16, 1990

Filed:

Mar. 03, 1987

Magneto-optical light switching element and method of manufacturing same

Applicant:
Inventors:

Peter Hansen, Appen, DE;

Claus-Peter Klages, Hamburg, DE;

Klaus-Peter Schmidt, Quickborn, DE;

Wolfgang F Tolksdorf, Tornesch, DE;

Klaus Witter, Hamburg, DE;

Assignee:

U.S. Philips Corp., New York, NY (US);

Attorney:

Botjer; William L.

Primary Examiner:

Bruce Y Arnold

Assistant Examiner:

Terry S Callaghan

Int. Cl.
CPC ...
G02F / ; G02B / ;
U.S. Cl.
CPC ...
350377 ; 350355 ;
Abstract

A magneto-optical light switching element comprising islands which are formed from an epitaxial layer on the basis of bismuth-substituted rare earth metal iron garnet, which layer is provided on a nonmagnetic, optically transparent garnet substrate, integrated heating resistors being provided on the islands which are surrounded by a coil, the substrate being (100)-oriented and the coil being constructed as an integrated coil.

Find Patent Forward Citations

Hansen, Peter. (1990). Magneto-optical light switching element and method of manufacturing same (U.S. Patent No. 4893909). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4893909

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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