Granted Patent
Utility
US 5,408,019 · App. 08/191,742
Cross-linked, water-absorbing polymer and its use in the production of hygiene items
Inventors:
Richard Mertens, Kurt Dahmen, Helmut Brehm
Patented Case
View Patent ↗
Granted: Apr 18, 1995
Filed: Feb 1, 1994
Inventors
Richard Mertens
Kurt Dahmen
Helmut Brehm
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.