Granted Patent
Utility
US 5,516,814 · App. 08/322,406
Process for preparing a polymer concentrate
Inventor:
Jean-Paul Trotoir
Patented Case
View Patent ↗
Granted: May 14, 1996
Filed: Oct 12, 1994
Inventor
Jean-Paul Trotoir
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED
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.