Granted Patent
Utility
US 4,689,383 · App. 06/840,843
Hydroxyl-functional disiloxanes and polysiloxane oligomers
Inventors:
Judy S. Riffle, Iskender Yilgor
Patented Case
View Patent ↗
Granted: Aug 25, 1987
Filed: Mar 18, 1986
Inventors
Judy S. Riffle
Iskender Yilgor
Assignee (at issue)
Thoratec Laboratories Corporation
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.