Granted Patent
Utility
US 4,486,570 · App. 06/523,230
Heat resistant high impact polymer compositions and method of making same
Inventors:
Frank E. Lordi, Jacob Triplett
Patented Case
View Patent ↗
Granted: Dec 4, 1984
Filed: Aug 15, 1983
Inventors
Frank E. Lordi
Jacob Triplett
Assignee (at issue)
Atlantic Richfield 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.