Granted Patent
Utility
US 5,300,689 · App. 07/854,522
Oximation process
Inventors:
Leroy O. Krbechek, Mary I. Casey
Patented Case
View Patent ↗
Granted: Apr 5, 1994
Filed: Mar 20, 1992
Inventors
Leroy O. Krbechek
Mary I. Casey
Assignee (at issue)
Henkel Limited
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.