John J. Gibbs, 73, a Food and Drug Administration research chemist from 1978 to 2001 who spent time as a division chief, died March 27 at a nursing home in Emmitsburg, Md. He had a form of dementia.

Dr. Gibbs served in the Army from 1960 to 1967, including tours in Germany and Vietnam. Many years later, he retired from the Army Reserve at the rank of lieutenant colonel. His decorations included the Bronze Star Medal, the Air Medal and the Army Commendation Medal.

John James Gibbs was born in Troy, N.Y., and completed high school in Greenville, S.C. He was a 1960 chemistry graduate of the College of William and Mary in Williamsburg and in 1974 received a doctorate in chemistry from Clemson University in South Carolina.

He lived in Woodsboro, a community in Frederick County. He was a member of St. John the Evangelist Catholic Church in Frederick and the Reserve Officers Association.

His hobbies included photography.

Survivors include his wife of 42 years, Claryce Amos Gibbs of Woodsboro; and a son, Daniel P. Gibbs of Baltimore.

— Adam Bernstein