Granted Patent
Utility
US 5,032,450 · App. 07/473,769
Microporous material having a coating of hydrophobic polymer
Inventors:
Thomas A. Rechlicz, Dennis D. Leatherman
Patented Case
View Patent ↗
Granted: Jul 16, 1991
Filed: Jan 31, 1990
Inventors
Thomas A. Rechlicz
Dennis D. Leatherman
Assignee (at issue)
PPG Industries, 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.