George A. Kalfas, Ph.D., 47, died unexpectedly on Monday, April 25, 2011, at the Hospital of the University of Pennsylvania, Philadelphia, PA, after a valiant battle against a fast-deteriorating disease.rnrnHe is survived by his beloved wife of thirteen years, Caroline (Waller) Kalfas; his children, Anastasios William (Tasos) 11, and Nikolaos Andrew (Nick) 9; his parents Anastasios and Chrysoula Kalfas of N. Michaniona, Greece; his sister, Theodosia Kalfa and her husband Stefanos Manganaris of Cincinnati, OH; his parents-in-law Earl and Anne Waller of Kinston, NC; his sisters-in-law Mary Waller of Raleigh, NC, and Billie Carmen and her husband Eugene Carmen of Wilmington, NC; several aunts, uncles, cousins, nieces, nephews, and many dear friends in Greece, the United States, and countries worldwide.rnrnGeorge was born in N. Michaniona, Thessaloniki, Greece, and graduated second in his class from the Chemical Engineering Department at the Aristotle University of Thessaloniki. He completed his Ph.D. (1992) in Chemical Engineering at the University of Wisconsin at Madison. After returning to complete his service in the Greek Army, he came back to the United States to work for DuPont Research Labs in 1994. He continued with DuPont up to present to the position of Senior Research Associate.rnrnGeorge loved his family, work, and friends. He was an active member of Holy Trinity Greek Orthodox Church of Wilmington, DE. He had a great laugh, liked Greek songs, and used to play the guitar. He treasured time spent with his loving wife and boys and will be dearly missed by all who had the pleasure to have known him. rnrnA memorial service will be held at 7 pm Wednesday, April 27th, at St. Clare of Assisi Catholic Church, 140 Broad Street, Swedesboro, NJ, followed by a visitation at the Daley Life Celebration Studio, 1518 Kings Highway, Swedesboro, NC. The funeral service will be held at Holy Trinity Greek Orthodox Church, 808 North Broom Street, Wilmington, DE, on Thursday, April 28th, at 10 am. Burial will follow at Lake Park Cemetery in Swedesboro, NJ.rnrnAs a gift to the family, friends and colleagues are creating a trust fund for the Kalfas children’s education at PO Box 71, Swedesboro, NJ 08085.rn –