Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Capsules
Patent
1985-11-25
1988-01-05
Griffin, Ronald W.
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Capsules
424482, A61K 922, A61K 924
Patent
active
047175672
ABSTRACT:
Disclosed are coatings for protecting pellet cores from environmental conditions of predetermined pH conditions. The coatings have a pH sensitive portion and a pH insensitive portion. The pH sensitive portion allows the cores to be protected by the coating under certain pH conditions and disintegrates under other pH conditions to allow exposure of the cores.
REFERENCES:
patent: T100404 (1981-03-01), Wu
patent: 4181710 (1980-01-01), Dannelly et al.
patent: 4196187 (1980-04-01), Dannelly et al.
patent: 4459279 (1984-07-01), Stricker et al.
patent: 4503030 (1985-03-01), Edgren et al.
patent: 4519801 (1985-05-01), Edgren
patent: 4522625 (1985-06-01), Edgren
patent: 4601893 (1986-07-01), Cardinal
patent: 4618487 (1986-10-01), Du Bois et al.
Miller, Jr. Edward G.
Wu Stephen H.
Eastman Kodak Company
Griffin Ronald W.
Heath, Jr. William P.
Stevens John F.
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