Granted Patent
Utility
US 5,158,705 · App. 07/815,507
Method for preparing tin oxide sols and sols prepared thereby
Inventor:
Thomas F. Swank
Patented Case
View Patent ↗
Granted: Oct 27, 1992
Filed: Jan 2, 1992
Inventor
Thomas F. Swank
Assignee (at issue)
Nyacol Products, 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.