Granted Patent
Utility
US 4,731,391 · App. 06/888,548
Process of making a superabsorbent polyurethane foam
Inventor:
Chad E. Garvey
Patented Case
View Patent ↗
Granted: Mar 15, 1988
Filed: Jul 18, 1986
Inventor
Chad E. Garvey
Assignee (at issue)
Kimberly-Clark 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.