Benzonatate Patent with Composition of Matter Claim

Background

Benzonatate is a mixture of butyl 4-aminobenzoate compounds

Current Patent

• This patent provides compositions of the resinate-bound benzonatate that minimizes release in the oral cavity.

• This patent also shows that the composition of benzonatate for the ion exchange resin releases in the same proportion as the existing benzonatate composition.

• Only cationic ion exchange resin in acid form having weak acid functionality work for this

Patent #8,808,743