Granted Patent
Utility
US 5,371,138 · App. 07/748,485
Ultraviolet blocking polysiloxane resin and process for making the same
Inventors:
Joy M. Schaefer, David Ganbarg
Patented Case
View Patent ↗
Granted: Dec 6, 1994
Filed: Aug 21, 1991
Inventors
Joy M. Schaefer
David Ganbarg
Assignee (at issue)
TruVue, 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.