Granted Patent
Utility
US 4,491,651 · App. 06/378,541
Antistats containing acrylonitrile copolymers and polyamines
Inventor:
Michael I. Naiman
Patented Case
View Patent ↗
Granted: Jan 1, 1985
Filed: May 17, 1982
Inventor
Michael I. Naiman
Assignee (at issue)
Petrolite 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.