Granted Patent
Utility
US 5,378,760 · App. 08/150,936
Blends of polystyrene/polypropylene grafted polymers and elastomeric tetrablock copolymers
Inventors:
Michael J. Modic, Richard Gelles, Lie K. Djiauw
Patented Case
View Patent ↗
Granted: Jan 3, 1995
Filed: Nov 10, 1993
Inventors
Michael J. Modic
Richard Gelles
Lie K. Djiauw
Assignee (at issue)
SHELL OIL 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.