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:
Oct. 21, 1997
Filed:
Mar. 14, 1996
Applicant:
Inventors:
Hirokazu Murata, Ibaraki, JP;
Hideki Ushio, Takatsuki, JP;
Atsushi Furutani, Takatsuki, JP;
Hiroaki Hibino, Toyonaka, JP;
Etsuko Fukuda, Yamatokoriyama, JP;
Assignee:
Sumitomo Chemical Company, Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
564438 ; 564418 ; 564437 ; 564439 ; 564443 ;
Abstract
The present invention concerns a process for producing crystals of 3-amino-2-hydroxyacetophenone salt having a high bulk density and improved flow properties, by treating 3-amino-2-hydroxyacetophenone of formula (1) ##STR1## or hydrogen halide salt thereof with sulfuric acid, in a solvent.