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. 14, 1993
Filed:
Jul. 20, 1989
Applicant:
Inventor:
Robert J Spry, Tipp City, OH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; H01C / ;
U.S. Cl.
CPC ...
359885 ; 356234 ;
Abstract
An optical filter structure for selectively blocking radiation of predetermined wavelength is described which comprises a layer of material characterized by transition from a superconducting phase to insulating phase upon heating to a characteristic transition temperature, deposited on a slab of dielectric material in the form of a plurality of multipole elements in a planar array of predetermined spacing of optical dimensions between adjacent rows and columns of said array.