Granted Patent
Utility
US 4,518,728 · App. 06/596,795
Carbon black filled nylons modified for improved toughness
Inventor:
Robert Pollard
Patented Case
View Patent ↗
Granted: May 21, 1985
Filed: Apr 4, 1984
Inventor
Robert Pollard
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.