Granted Patent
Utility
US 4,568,517 · App. 06/673,689
Disinfection of contact lenses
Inventors:
Hans Kaspar, Murray J. Sibley, Gordon H. K. Yung
Patented Case
View Patent ↗
Granted: Feb 4, 1986
Filed: Nov 21, 1984
Inventors
Hans Kaspar
Murray J. Sibley
Gordon H. K. Yung
Assignee (at issue)
Barnes-Hind, 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.