Multiple parameter structure of Mielnik's isospectrality in unbroken SUSYQM

Within unbroken SUSYQM and for zero factorization energy, I present an iter ative generalization of Mielnik's isospectral method by employing a Schrodi nger true zero mode in the first-step general Riccati solution and imposing the physical condition of normalization at each iterative step. This proce dure leads to a well-defined multiple-parameter structure within Mielnik's construction for both zero modes and potentials.