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:
May. 09, 1978
Filed:
Apr. 04, 1977
Applicant:
Inventors:
Assignee:
Ricoh Co., Ltd., Tokyo, JA;
Primary Examiner:
Int. Cl.
CPC ...
G03G / ; C07D / ;
U.S. Cl.
CPC ...
96 / ; 96 / ; 542433 ; 542435 ; 542429 ; 542456 ; 542458 ;
Abstract
1,3,4-OXADIAZOLE DERIVATIVES EXPRESSED BY THE GENERAL FORMULA ##STR1## wherein R represents cyanophenyl, nitrophenyl, dialkylaminophenyl (wherein alkyl has 1-4 carbon atoms), julolidyl, N-alkylcarbazolyl (wherein alkyl has 1-4 carbon atoms) or ferrocenyl radical, are photoconductive substances possessing high sensitivity and are compounds useful as a constituent of electrophotographic plates.