Granted Patent
Utility
US 5,611,934 · App. 08/574,009
Process for dye removal
Inventors:
Paul W. Shepperd, III, Larry W. Becker, Robert J. Cundiff
Patented Case
View Patent ↗
Granted: Mar 18, 1997
Filed: Dec 18, 1995
Inventors
Paul W. Shepperd, III
Larry W. Becker
Robert J. Cundiff
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.