Granted Patent
Utility
US 4,249,917 · App. 06/096,406
Sterilization gas separation process
Inventor:
Gregorio Tarancon
Patented Case
View Patent ↗
Granted: Feb 10, 1981
Filed: Nov 21, 1979
Inventor
Gregorio Tarancon
Assignee (at issue)
Union Carbide Corporation
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.