Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Specially adapted for ruminant animal
Patent
1987-06-11
1988-12-20
Lusignan, Michael
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Specially adapted for ruminant animal
424467, A23K 118, A61K 944
Patent
active
047924489
ABSTRACT:
A device for zero order releasing of biologically active substances into a fluid medium comprising a cylindrical tablet or bolus covered with an impermeable wall or coating from which strips of said wall or coating have been removed.
REFERENCES:
patent: 3851648 (1974-12-01), Brooke
patent: 4690824 (1987-09-01), Powell et al.
Lumb J. Trevor
Lusignan Michael
McManus James M.
Pfizer Inc.
Richardson Peter C.
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