Granted Patent
Utility
US 5,256,302 · App. 07/884,668
Method for controlling silica and water soluble silicate deposition
Inventors:
Libardo A. Perez, J. Michael Brown, Khac Tung Nguyen
Patented Case
View Patent ↗
Granted: Oct 26, 1993
Filed: May 18, 1992
Inventors
Libardo A. Perez
J. Michael Brown
Khac Tung Nguyen
Assignee (at issue)
Betz Laboratories, Inc.
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.