Granted Patent
Utility
US 5,585,216 · App. 08/452,339
Use of cyclic oligosaccharides as charge control agents
Inventors:
R udiger Baur, Hans-Tobias Macholdt
Patented Case
View Patent ↗
Granted: Dec 17, 1996
Filed: May 26, 1995
Inventors
R udiger Baur
Hans-Tobias Macholdt
Assignee (at issue)
Hoechst 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.