Granted Patent
Utility
US 5,147,343 · App. 07/334,260
Absorbent products containing hydrogels with ability to swell against pressure
Inventor:
Stanley R. Kellenberger
Patented Case
View Patent ↗
Granted: Sep 15, 1992
Filed: Apr 10, 1989
Inventor
Stanley R. Kellenberger
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.