Granted Patent
Utility
US 5,573,674 · App. 08/549,558
Activated silica sol
Inventors:
Christopher Lind, Michael A. Ware
Patented Case
View Patent ↗
Granted: Nov 12, 1996
Filed: Oct 27, 1995
Inventors
Christopher Lind
Michael A. Ware
Assignee (at issue)
General Chemical Company
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.