Granted Patent
Utility
US 4,758,282 · App. 06/947,180
Process for dry cationization of galactomannans
Inventors:
Reinhard Stober, Wolfgang Fischer, Michael Huss
Patented Case
View Patent ↗
Granted: Jul 19, 1988
Filed: Dec 29, 1986
Inventors
Reinhard Stober
Wolfgang Fischer
Michael Huss
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.