  Within the context of non-Hermitian quantum mechanics, we use the generators
of eigenvectors of the Hamiltonian to construct a unitary inner product space.
Such models have been of interest in recent years, for instance, in the context
of ${\cal PT}$ symmetry, although our construction extends to the larger class
of so-called pseudo-Hermitian Operators. We provide a detailed example to
illustrate the concept and compare with known results.
