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:
Nov. 22, 1988
Filed:
Mar. 02, 1987
Luciano Fontanelli, Pisa, IT;
Istituto Gentili S.p.A., Pisa, IT;
Abstract
A method for the preparation of tablets slowly releasing the active principle, characterized in that (I) during the granulation step a solution in organic solvents of a polymer insoluble in biological juices is sprayed on a mixture containing an active principle, slightly swelling polymers and usual excipients; (II) the granulated obtained in this way is added with a highly hydroswelling colloidal polymer; (III) a solution, in organic solvents, of an entero-soluble polymer, is sprayed on the granulate; (IV) the resulting granulate is submitted to compression; (V) the obtained tablets are hardened by washing with organic solvents; and (VI) they are then optionally coated.