Granted Patent
Utility
US 6,656,377 · App. 09/862,759
Inorganic composition, process of preparation and method of use
Inventors:
Denis E. Hassick, Michael P. Flaherty, Pamela J. Dotter, Robert J. Guerrini
Patented Case
View Patent ↗
Granted: Dec 2, 2003
Filed: May 21, 2001
Inventors
Denis E. Hassick
Michael P. Flaherty
Pamela J. Dotter
Robert J. Guerrini
Assignee (at issue)
Calgon 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.