Granted Patent
Utility
US 4,640,962 · App. 06/774,962
Silicone-modified polyester resin and silicone-sheathed polyester fibers made therefrom
Inventors:
Robert L. Ostrozynski, George H. Greene, James H. Merrifield
Patented Case
View Patent ↗
Granted: Feb 3, 1987
Filed: Sep 11, 1985
Inventors
Robert L. Ostrozynski
George H. Greene
James H. Merrifield
Assignee (at issue)
Union Carbide 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.