Granted Patent
Utility
US 5,491,187 · App. 08/471,080
Plastic compositions with antistatic properties
Inventors:
James J. Ward, William P. Chatham
Patented Case
View Patent ↗
Granted: Feb 13, 1996
Filed: Jun 6, 1995
Inventors
James J. Ward
William P. Chatham
Assignee (at issue)
Witco 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.