Granted Patent
Utility
US 5,998,312 · App. 08/875,237
Substrate with super-absorbent material, method for manufacture thereof and use
Inventor:
Aalbertus Pieter Kroesbergen
Patented Case
View Patent ↗
Granted: Dec 7, 1999
Filed: Sep 9, 1997
Inventor
Aalbertus Pieter Kroesbergen
Assignee (at issue)
Stockhausen GmbH & Co. KG
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.