Granted Patent
Utility
US 5,869,028 · App. 08/758,278
Precipitated silicas having improved dentifrice performance characteristics and methods of preparation
Inventors:
Patrick D. McGill, Satish K. Wason
Patented Case
View Patent ↗
Granted: Feb 9, 1999
Filed: Dec 3, 1996
Inventors
Patrick D. McGill
Satish K. Wason
Assignee (at issue)
J.M. Huber 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.