Granted Patent
Utility
US 5,281,663 · App. 07/860,125
High impact resistanct blends of thermoplastic polyesters and modified block copolymers
Inventors:
Richard Gelles, William P. Gergen, Robert G. Lutz, Michael J. Modic
Patented Case
View Patent ↗
Granted: Jan 25, 1994
Filed: Mar 31, 1992
Inventors
Richard Gelles
William P. Gergen
Robert G. Lutz
Michael J. Modic
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.