Granted Patent
Utility
US 5,115,007 · App. 07/658,730
Abrasion resistant polyurethane blend compositions
Inventors:
Kohji Y. Chihara, Gerd M. Lenke
Patented Case
View Patent ↗
Granted: May 19, 1992
Filed: Feb 21, 1991
Inventors
Kohji Y. Chihara
Gerd M. Lenke
Assignee (at issue)
GenCorp, 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.