Granted Patent
Utility
US 5,777,030 · App. 08/720,406
Blends of a styrenic polymer and monovinylaren/conjugated diene block copolymers
Inventors:
Mark D. Hanes, William H. Beever, David L. Hartsock
Patented Case
View Patent ↗
Granted: Jul 7, 1998
Filed: Sep 27, 1996
Inventors
Mark D. Hanes
William H. Beever
David L. Hartsock
Assignee (at issue)
Phillips Petroleum 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.