Publisher Summary This chapter highlights six case studies prepared by the students at the University of Minnesota. Cussler and Moggridge proposed a four-step procedure for chemical product design: (1) the first step is the identification of customer needs and the translation of the needs into product specifications. (2) The second step is to generate ideas to fill these needs. (3) In the third step, the best ideas are selected for commercial development. (4) Product manufacture is considered in the last step. Chemical product design begins by identifying customer needs. These needs are often vague, qualitative product qualities and particular specifications must be set for manufacturing the product. The background information for the needs of all of these projects is discussed in the chapter. After generating ideas to fill the needs, the next step is to select the best ideas for further development. In most cases, only a few ideas are selected, because of the substantial amount of work required to take an idea forward. Each potential product is evaluated in terms of technical feasibility and cost, competing products on the market and customers' wants. The concept selection matrix can be useful. A handful of important criteria weighted according to their perceived significance are generated to judge the ideas.