Granted Patent
Utility
US 5,539,011 · App. 08/326,293
Use of softening additives in polyurethane foam
Inventors:
Brian L. Hilker, Mark A. Harakal, Susan B. McVey
Patented Case
View Patent ↗
Granted: Jul 23, 1996
Filed: Oct 20, 1994
Inventors
Brian L. Hilker
Mark A. Harakal
Susan B. McVey
Assignee (at issue)
OSI Specialties, 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.