Granted Patent
Utility
US 5,658,573 · App. 08/487,490
Method of generating an aqueous suspension of colloidal silica
Inventor:
Robert R. Holcomb
Patented Case
View Patent ↗
Granted: Aug 19, 1997
Filed: Jun 7, 1995
Inventor
Robert R. Holcomb
Assignee (at issue)
NOVATECH CO., LTD
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.