Granted Patent
Utility
US 5,560,896 · App. 08/457,435
Method for producing granulated sodium percarbonate
Inventors:
Martin Bewersdorf, Claas-Jurgen Klasen, Petra Look-Herber, Birgit Bertsch-Frank, Thomas Lieser, Klaus Muller
Patented Case
View Patent ↗
Granted: Oct 1, 1996
Filed: Jun 1, 1995
Inventors
Martin Bewersdorf
Claas-Jurgen Klasen
Petra Look-Herber
Birgit Bertsch-Frank
Thomas Lieser
Klaus Muller
Assignee (at issue)
Degussa AG
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.