Granted Patent
Utility
US 5,409,771 · App. 07/966,047
Aqueous-liquid and blood-absorbing powdery reticulated polymers, process for producing the same and their use as absorbents in sanitary articles
Inventors:
Kurt Dahmen, Richard Mertens
Patented Case
View Patent ↗
Granted: Apr 25, 1995
Filed: Dec 29, 1992
Inventors
Kurt Dahmen
Richard Mertens
Assignee (at issue)
Chemische Fabrik Stockhausen GmbH
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.