Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Particulate form
Patent
1990-07-26
1992-05-12
Page, Thurman K.
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Particulate form
424458, 424461, 424462, 424465, 424480, 424482, 424495, 427 3, A61K 916, A61K 958, A61K 962
Patent
active
051126214
ABSTRACT:
A sustained-release pharmaceutical composition which comprises microparticles comprising an active principle, said microparticles being coated with a coating mixture comprising ethyl cellulose and an acrylic resin which is a polymerizate of acrylic and methacrylic ester, having a molecular weight of at least 100,000 and comprising units of formula: ##STR1## wherein: R.sub.1 is hydrogen or methyl,
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patent: 4775536 (1988-10-01), Patel
patent: 4780318 (1988-10-01), Appelgren et al.
patent: 4800087 (1989-01-01), Mehta
Patent Abstracts of Japan, vol. 11, No. 184, Jun. 12, 1987, JP-A-62 5915.
Patent Abstracts of Japan, vol. 11, No. 47, Feb. 13, 1987, JP-A-61 212517.
Arnold Francoise
Chariot Maryvonne
Lewis Gareth
Stevens Howard
Page Thurman K.
Spear James M.
Synthelabo
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