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. 12, 1993
Filed:
Jun. 25, 1991
Applicant:
Inventor:
Thomas C Powell, West Alexandria, OH (US);
Assignee:
Eurand America, Inc., , OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; A61K / ; B01J / ;
U.S. Cl.
CPC ...
424456 ; 424452 ; 424461 ; 424480 ; 424492 ; 424495 ; 42721331 ; 42721332 ; 42721333 ; 42721336 ; 42840224 ; 514821 ; 514963 ; 514965 ;
Abstract
A controlled release formulation of a calcium channel blocker for oral administration contains non-pareil seeds loaded with a calcium channel blocker, particularly diltiazem, nifedipine, or verapamil, and then microencapsulated in ethylcellulose by phase separation techniques. The resultant microcapsules provide an approximately zero order release rate, preferably over 12 to 16 hours. These microcapsules may be filled into gelatin capsules.