04138013 is referenced by 43 patents and cites 4 patents.

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.

Title
Enteric capsules
Application Number
568974
Publication Number
4138013
Application Date
June 13, 1977
Publication Date
February 6, 1979
Inventor
Yakutaro Okajima
Fukazawa
JP
Agent
Stephen Raines
David B Ehrlinger
Assignee
Parke Davis & Company
MI, US
IPC
A61K 9/58
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