This paper presents a method of addressing the resource-constraint problem associated with non-preemption in product development (PD) process. In this work, we specifically consider the development of multiple products across a planning horizon where development personnel and development durations are the main constraints that delay product launch. Relevant PD parameters were employed in defining the problem, and the problem was modelled as a contiguous-cells transportation problem with the objective of minimizing the “lost revenue” associated with the re-scheduling of PD processes due to unavailability of product development personnel. A hypothetical problem of scheduling six products across ten development quarters was then used to demonstrate the applicability of the model which yielded favorable results for product development schedules with minimal lost revenues. The result obtained shows that the method is effective and can be adopted by researchers and professionals to aid decision making in product development.