Granted Patent
Utility
US 5,560,805 · App. 08/097,745
Enhanced decolorization of waste paper with selected amines
Inventors:
Glynn A. Hamilton, Paul W. Shepperd, III
Patented Case
View Patent ↗
Granted: Oct 1, 1996
Filed: Jul 27, 1993
Inventors
Glynn A. Hamilton
Paul W. Shepperd, III
Assignee (at issue)
Hoechst Celanese Corporation
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.