That sounds very close to The Door Into Summer by Robert Heinlein.
I could be wrong though, I read the book ages ago.
Here's a brief paragraph from another website:
Dan Davis is a talented engineer whose invention, a household robotic appliance, promises a bright future for him and everyone else. Until, that is, his beautiful fiancee tricks his partner into helping her dispose of Dan. Waking up 30 years later from suspended animation, Dan finds out that time travel is possible. Revenge is a dish best served cold... if at all.