Alcon Laboratories, Inc., Fort Worth, Texas (1980)
Ciba-Geigy SA, Basle, Switzerland (1976-1977)
Diamond Shamrock Chemical Company, Harrison, New Jersey (1972-1976)
Diamond Shamrock Corporation, Painesville, Ohio (1973-1976)
FMC Corporation, Middleport, New York (1972-1982)
L'Oréal, Aulnay-sous-Bois, France (1978-1995)
Oak Ridge National Laboratory, Oak Ridge, Tennessee (1982-1985)
Miles Laboratories, Inc., Elkhart, Indiana (1974-1976)
Molecular Design, Inc., Memphis, Tennessee (1974-1983)
Molecular Design International, Inc., Memphis, Tennessee (1977-present)
Riker Laboratories, Inc., Saint Paul, Minnesota (1973-1974)
Searle Laboratories, Chicago, Illinois (1974-1975)
Synthélabo, Paris, France (1978-1980) (1993-1995)
Wyeth Laboratories, Philadelphia, Pennsylvania (1975-1985)
Zyma SA, Nyon Switzerland (1978-1982)
