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:
Feb. 21, 1978
Filed:
Oct. 26, 1976
Applicant:
Inventors:
Richard Seely Crandall, Princeton, NJ (US);
Brian Wilfred Faughnan, Princeton, NJ (US);
Assignee:
RCA Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365107 ; 346-1 ; 346160 ; 346365 ; 365112 ; 365119 ;
Abstract
Optical information is stored in a member which includes a layer of electrochromic material and an electrolyte in contact with the electrochromic material. The electrolyte has particles of photoconductive material therein. The member is exposed to optical information such that electron-hole pairs are formed in the photoconductive material. The creation of the electron-hole pairs produces persistent coloration in the electrochromic material in an area which corresponds to the optical information. If desired, the stored information can be erased by applying an electric field to the member.