Back to results
US 2013/0096191 A1Published application
Benzonatate Compositions and Methods of Use
OwnerWilliam Wayne Howard, Russell Francis Sommainventors
Life of this patent
Estimating the term…
Abstract
Oral dosage forms of benzonatate useful for anti-tussive and anti-tussive/combination applications.
Claims30
A resinate composition of matter comprising a mixture of individual butyl 4-aminobenzoate compounds having the formula C4H9—NH—C6H4—COO—(C2H4O)n—CH3, and the structure shown in FIG. 1;
- wherein the quantity n in the formula and in FIG. 1 is the number of ethoxy units in a butyl 4-aminobenzoate compound of the mixture, said quantity n having a value in the range of from at least 1 to about 25;
- and
- wherein each said compound is bound to an insoluble, weakly acid, hydrogen form cation exchange resin in the form of a resinate.
Dependencies are inferred from the claim text.