Granted Patent
Utility
US 6,683,135 · App. 09/986,511
Blocked mercaptosilane coupling agents for filled rubbers
Inventors:
Richard W. Cruse, Robert J. Pickwell, Keith J. Weller, Eric R. Pohl
Patented Case
View Patent ↗
Granted: Jan 27, 2004
Filed: Nov 9, 2001
Inventors
Richard W. Cruse
Robert J. Pickwell
Keith J. Weller
Eric R. Pohl
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.