Granted Patent
Utility
US 5,849,368 · App. 08/851,052
Process for hydrophilicization of hydrophobic polymers
Inventors:
Fritz Hostettler, Michael N. Helmus, Ni Ding
Patented Case
View Patent ↗
Granted: Dec 15, 1998
Filed: May 5, 1997
Inventors
Fritz Hostettler
Michael N. Helmus
Ni Ding
Assignee (at issue)
Schneider (USA) Inc.
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.