Granted Patent
Utility
US 4,409,342 · App. 06/295,813
Synergistic reinforcement promoter systems for filled polymers
Inventors:
Fred H. Ancker, Arnold C. Ashcraft, Eric R. Wagner, by Maria M. Wagner, executrix
Patented Case
View Patent ↗
Granted: Oct 11, 1983
Filed: Aug 27, 1981
Inventors
Fred H. Ancker
Arnold C. Ashcraft
Eric R. Wagner
by Maria M. Wagner, executrix
Assignee (at issue)
Union Carbide 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.