Granted Patent
Utility
US 5,568,239 · App. 08/412,221
Stainproofing oil for a heat fixing roller
Inventors:
Yutaka Furukawa, Seisaku Kumai, Mami Yoshino
Patented Case
View Patent ↗
Granted: Oct 22, 1996
Filed: Mar 27, 1995
Inventors
Yutaka Furukawa
Seisaku Kumai
Mami Yoshino
Assignee (at issue)
ASAHI GLASS 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.