Granted Patent
Utility
US 4,935,480 · App. 07/325,731
Fluorinated polyetherurethanes and medical devices therefrom
Inventors:
Richard J. Zdrahala, Marc Alan Strand
Patented Case
View Patent ↗
Granted: Jun 19, 1990
Filed: Mar 20, 1989
Inventors
Richard J. Zdrahala
Marc Alan Strand
Assignee (at issue)
BECTON, DICKINSON AND COMPANY
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.