Granted Patent
Utility
US 5,179,169 · App. 07/566,622
Olefinic impact modifiers for, and blends with, thermoplastic polyester resins
Inventors:
Charles F. Pratt, Shrikant V. Phadke, Errol J. Olivier
Patented Case
View Patent ↗
Granted: Jan 12, 1993
Filed: Aug 13, 1990
Inventors
Charles F. Pratt
Shrikant V. Phadke
Errol J. Olivier
Assignee (at issue)
Copolymer Rubber & Chemical 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.