Granted Patent
Utility
US 4,971,761 · App. 07/319,049
Temperature control method for an ethylene oxide sterilization cycle
Inventor:
Kenneth A. Johnson
Patented Case
View Patent ↗
Granted: Nov 20, 1990
Filed: Mar 6, 1989
Inventor
Kenneth A. Johnson
Assignee (at issue)
MDT CO.,LTD.
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.