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. 06, 1979
Filed:
Jun. 13, 1977
Yakutaro Okajima, Fukazawa, JP;
Parke, Davis & Company, Detroit, MI (US);
Abstract
Pharmaceutical capsules with telescopically engaged body and cap portions, also known as hard shell capsules, having enteric properties. The capsule body and cap portions are formed by dip-molding using a homogeneous film-forming mixture comprising (1) hydroxypropyl methylcellulose and an ammonium salt of cellulose acetate phthalate polymer, or (2) gelatin and an ammonium salt of a copolymer of methacrylic acid and methacrylic acid alkyl ester; optionally with the inclusion of plasticizer and/or coloring agent. The capsules are soluble in or disintegrated by the alkaline intestinal secretions but are substantially insoluble or resistant to solution in the acid secretions of the stomach.