He conducted numerous brewing experiments, measuring the brew with laboratory instruments. The experiments demonstrated that proper temperature, total immersion and rapid filtering were the keys to flavor excellence. He then designed and tested dozens of brewers before settling on the AEROPRESS design. The design was further validated by coffee lovers who tested prototypes in their homes. Adler has about forty U.S. patents and an equal number of foreign patents. He is President of Aerobie, Inc, Palo Alto, California and a lecturer in mechanical engineering at Stanford University. The AeroPress has since earned industry-wide acclaim for its ability to brew rich, smooth coffee.