Dr. Hans-Dietrich "Dieter" Weigmann, PhD, 82, of Princeton died Sunday, September 30, 2012 at the University Medical Center of Princeton at Plainsboro. Mr. Weigmann has been a resident of Princeton since 1961. Mr. Weigmann was born in Rostock, Germany, and was the son of the late Hans-Theodor and Gertrud (Buschmann). He received his doctorate in organic chemistry from the Technische Hochschule Aachen, Germany. For thirty-four years, he worked at the Textile Research Institute in Princeton, NJ, as a fiber and textile chemist, and was one of the most distinguished scientists in his field, making many contributions to both fundamental sciences and applied technologies. In 1990, he was recipient of the Olney Medal, the highest honor in textile science. He was a loving husband, wonderful father and grandfather, and true friend to all who knew him. He is survived by his wife of fifty-four years, Christa C. (von Schwind) Weigmann, his brother, Hans-Helmut Weigmann, and his two daughters, Stefanie of Boston, MA and Jessica Weigmann of New York, NY. He is also survived by Stefanie's daughter Mai Babila-Weigmann, and Jessica's husband Mark Warren, and their children Ezekiel and Oona Warren-Weigmann. We will all miss him very much, as will the rest of his family in Germany, his many friends in Princeton, in Marathon, Texas, where he spent many happy days, as well as friends he made all over the world. Dieter was brilliant and passionate, curious, kind, and generous. He loved birds and long walks in the woods. He was a great sailor and sculptor. He told the most beautiful and epic stories to his grandkids, and he made the grandest sandcastles. He left us too soon. There will be a memorial gathering November 11th at 350 Herrontown Rd., Princeton. The Funeral will be private under the direction of the Mather-Hodge Funeral Home, Princeton.