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:
Mar. 09, 1993
Filed:
Oct. 09, 1990
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430 56 ; 430945 ; 313523 ; 346 / ; 346 / ; 338 14 ; 338 15 ; 252518 ; 252520 ; 428913 ; 365108 ; 365112 ;
Abstract
A variable electroconductivity material characterized by being obtained by formulating (a) an electroconductivity variation imparting agent comprising a substance which is caused by light or heat energy to undergo structural change, reversibly or irreversibly, between nonionic and ionic structures and (b) a charge transport substance the electroconductivity of which is varied by said structural change of said electroconductivity variation imparting agent, and an information recording medium obtained by the use of this material has excellent memory stability, and also a light (heat) converting device having conversion characteristics can be obtained by the use of this material.