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:
Sep. 28, 1982
Filed:
Jan. 14, 1980
Applicant:
Inventors:
Gunnar A Sothmann, Kirkkonummi, FI;
Esko V Marttila, Helsinki, FI;
Assignee:
Orion-yhtyma Oy, , FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; A61K / ; A61K / ;
U.S. Cl.
CPC ...
424 19 ; 424 22 ;
Abstract
A process for the preparation of matrix-type tablets with retarded liberation of the active agent. The liberation of the active agent from the tablets takes place at a speed that has been adjusted precisely in advance. In the granulation process, polymethacrylate plastics insoluble in neutral or slightly acid water either as dissolved in an organic solvent or as a water dispersion are used as the retarding matrix substance. Before the tablets are compressed, an ester of a large-molecule fatty acid or a product obtained from same by means of hydrogenation is mixed into the grain mix in order to adjust the rate of liberation of the active agent.