June 1956 - Sept. 1958 Communications Officer, United States Navy 3912, Sasebo, Japan
1959 - 1960 (Summer) Research Engineer in Textile Fibers Dept. (exploratory research on synthetic fibers) E.I. du Pont de Nemours
March 1963 - August 1965 Research Scientist engaged in heat transfer studies, United Aircraft Corporation Research Laboratories
August 1965 Joined the Faculty of Rensselaer Polytechnic Institute
1976 - (Summer) Chemist (Chemical Engineer) Lawrence Livermore Laboratory
Sept. 1976 - July 1977 Sabbatical leave at Stanford Universit (Visiting Professor in Chemical Engineering); NASA Ames Research Center (Contract Researcher for Heat Pipe Research Program)
1985 Chairman, Heat Transfer and Energy Conversion Division, American Institute of Chemical Engineers
1987 Sabbatical visit to National Cheng Kung University, Tainan, Taiwan, and to Oxford University, Oxford, England
1988 - 1989 1988 Technical Program C