Granted Patent
Utility
US 4,769,113 · App. 07/038,601
Method for recycling energy in counterflow heat exchange and distillation
Inventor:
Stephan B. Sears
Patented Case
View Patent ↗
Granted: Sep 6, 1988
Filed: Apr 15, 1987
Inventor
Stephan B. Sears
Assignee (at issue)
Superstill Technology, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.