Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Tablets – lozenges – or pills
Reexamination Certificate
2006-02-28
2006-02-28
Page, Thurman K. (Department: 1615)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Tablets, lozenges, or pills
C424S451000, C424S489000, C424S491000, C424S499000, C514S533000, C514S561000
Reexamination Certificate
active
07005141
ABSTRACT:
The present invention relates to an oral drug delivery system, and in particular to modified amino acids and modified amino acid derivatives for use as a delivery system of sensitive agents such as bioactive peptides. The modified amino acids and derivatives can form non-covalent mixtures with active biological agents and in an alternate embodiment can releasably carry active agents. Modified amino acids can also form drug containing microspheres. These mixtures are suitable for oral administration of biologically active agents to animals. Methods for the preparation of such amino acids are also disclosed.
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Barantsevitch Evgueni N.
Leone-Bay Andrea
Milstein Sam J.
Paton Duncan R.
Sarubbi Donald J.
Channavajjala Lakshmi
Darby & Darby
Emisphere Technologies Inc.
Page Thurman K.
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