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:
Jan. 06, 2004
Filed:
Dec. 18, 2002
Applicant:
Inventors:
Ryuzo Ueno, Nishinomiya, JP;
Masaya Kitayama, Takarazuka, JP;
Nobutaka Izumichi, Ashiya, JP;
Masaharu Kittaka, Takarazuka, JP;
Assignee:
Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 6/501 ;
U.S. Cl.
CPC ...
C07C 6/501 ;
Abstract
Granular product of parahydroxybenzoic acid or its ester which exhibits well suppressed dusting and caking tendency and a process for preparing the product are provided. The granular product of parahydroxybenzoic acid or its ester according to the instant invention has an average particle size of equal to or more than 150 &mgr;m and a hardness of 10-3000 g. The granular product of the invention can be prepared by dry compressing powdery parahydroxybenzoic acid or its ester to give compressed material, pulverizing and classifying the material.