This article extends an earlier summary on the same subject done for the 1980s. It summarizes catalytic chemical, petroleum, biochemical, and environmental technology that was successfully commercialized during the decade of the 1990s within the USA. The tables were assembled from the feedback of technical representatives of companies that commercialized, catalytic technology in the 1990s, and the tables provide over 130 examples of new catalysts or catalyst improvements for operating processes (both in some advanced stage of scale up or commercialized). This review demonstrates that catalytic technology clearly continues to play a major role in enhancing a number of businesses on a worldwide basis.