Granted Patent
Utility
US 5,575,950 · App. 08/354,020
Silicate defoaming composition and methods
Inventor:
Alvin E. Steelman
Patented Case
View Patent ↗
Granted: Nov 19, 1996
Filed: Dec 6, 1994
Inventor
Alvin E. Steelman
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.