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. 31, 1998
Filed:
Aug. 25, 1995
Applicant:
Inventor:
Tetsuyuki Saika, Suita, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C08F / ; C08G / ; C08G / ;
U.S. Cl.
CPC ...
549 59 ; 522168 ; 528 30 ; 528380 ;
Abstract
The present invention provides a thiophene derivative and the polymer thereof as expressed in the following formulas, which will respond to light and electricity and which are best suited for use as photorecording materials and light-electricity conversion elements. ##STR1## where n and m are independent integral numbers greater than 0; R.sub.1 is a hydrogen atom, a halogen atom or a trialkylsilyl group; the R.sub.2 s together with the ethylenic linkage form a ring and said R.sub.2 s taken together are an optionally substituted alkylene group or --COOCO-- or the R.sub.2 s independently represent cyano; and R.sub.3, R.sub.4 and R.sub.5 are hydrogen or alkyl.