A - Human Necessities – 61 – K
Patent
A - Human Necessities
61
K
A61K 47/48 (2006.01) A61K 31/557 (2006.01) C08G 73/02 (2006.01)
Patent
CA 2086527
2086527 9201477 PCTABS00010 A drug delivery system adapted to release an effective amount of a drug at pH values of about 1 to 7 without releasing a significant amount of the drug at pH values of about 7 and above, the system comprising a polymeric material and a drug covalently bonded to the polymeric material through a pH sensitive covalent bond capable of being cleaved in the pH range of 1 to about 7.
Collins Paul W.
Jones Peter H.
Perkins William E.
Tremont Samuel J.
G.d. Searle & Co.
Monsanto Company
Osler Hoskin & Harcourt Llp
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