Question: When did Iris M. Ovshinsky's husband die?
Sentence (from "Iris M. Ovshinsky"): Iris M. Ovshinsky (July 13, 1927 – August 16, 2006) was an American businesswoman and scientist, and the co-founder of Energy Conversion Devices with her husband Stanford R. Ovshinsky, serving as its Vice President from its founding in 1960 until her death.
Relevant evidence: Yes