Granted Patent
Utility
US 5,342,871 · App. 08/017,227
Clear hydrophilic coating for heat exchanger fins
Inventors:
David D. Clinnin, Ronald J. Lewarchik, Dexter F. Sunderman
Patented Case
View Patent ↗
Granted: Aug 30, 1994
Filed: Feb 12, 1993
Inventors
David D. Clinnin
Ronald J. Lewarchik
Dexter F. Sunderman
Assignee (at issue)
Morton International, 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.