Granted Patent
Utility
US 4,277,574 · App. 06/095,708
Process for preparing ABS polyblends
Inventors:
Michael Jastrzebski, Allen R. Padwa
Patented Case
View Patent ↗
Granted: Jul 7, 1981
Filed: Nov 19, 1979
Inventors
Michael Jastrzebski
Allen R. Padwa
Assignee (at issue)
Monsanto 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.