Granted Patent
Utility
US 5,721,295 · App. 08/535,069
Polymer composition, absorbent composition, their production and use
Inventors:
Helmut Bruggemann, Uwe Gunther, Helmut Klimmek
Patented Case
View Patent ↗
Granted: Feb 24, 1998
Filed: Jan 26, 1996
Inventors
Helmut Bruggemann
Uwe Gunther
Helmut Klimmek
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.