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. 25, 1993
Filed:
Apr. 08, 1991
Applicant:
Inventors:
Noboru Sugishima, Himeji, JP;
Noriaki Ikeda, Himeji, JP;
Yasushi Fujii, Himeji, JP;
Akira Inoue, Hirakata, JP;
Assignee:
Nippon Shokubai Kagaku Kogyo, Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25B / ;
U.S. Cl.
CPC ...
204 / ; 204 72 ; 204 / ; 552238 ; 552249 ; 552251 ;
Abstract
A process for producing 1-aminoanthraquinones represented by formula (C) ##STR1## wherein R.sup.1 and R.sup.2, independently from each other, denote one type selected from a hydrogen atom, an alkyl group having 1 to 4 carbon atoms and a halogen atom,