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:
Feb. 23, 1988
Filed:
Nov. 25, 1986
Applicant:
Inventors:
Yoshiaki Kawashima, Gifu, JP;
Hirofumi Takeuchi, Gifu, JP;
Toshiyuki Niwa, Gifu, JP;
Tetsurou Handa, Gifu, JP;
Assignee:
Showa Shinyaku Co., Ltd., Nagoya, JP;
Primary Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
42721336 ; 424462 ; 424497 ; 514570 ; 514963 ; 514974 ;
Abstract
This invention provides a simple method for preparing granular ibuprofen microsphere whose surface is coated with acrylic acid resin. By this method granulation of ibuprofen and coating of its surface can be simultaneously accomplished. Namely, the method of preparation includes the steps of: (a) dissolving ibuprofen with acrylic acid resin into lower aliphatic alcohol, acetone, methylene chloride or N,N-dimethylformamide; and (b) depositing coated granular ibuprofen microsphere by mixing the solution of step (a) with water and by stirring the mixed solution.