Abstract
Cases of successful product development processes in Japanese electronics firms were analyzed and the R&D Flow & Stock Diagram describing the development processes was derived. The analysis revealed the followings : 1. The sense of crisis is one of the major motivations to initiate a development project, 2. A concrete decision action is needed to actually ignite the project, 3. Another concrete decision action is needed to commercialize the developed result, 4. The product-specific technology is vital for eventual success of the project, 5. A person possessing strong will plays key roles in the project execution.
