Granted Patent
Utility
US 5,116,902 · App. 07/472,157
Elastomer for use with aqueous inks
Inventors:
Charles B. Chapman, Michael R. Williams
Patented Case
View Patent ↗
Granted: May 26, 1992
Filed: Jan 30, 1990
Inventors
Charles B. Chapman
Michael R. Williams
Assignees (at issue)
Hewlett-Packard Company, L.P.
Hiawatha Rubber Co.
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.