Granted Patent
Utility
US 5,770,652 · App. 08/545,059
Dispersive reactive extrusion of polymer gels
Inventors:
William D. Richards, Greg R. Bradtke, Robert H. Wildi, Linda McAdam Gemmell, Jack A. Hill, Vinod Kumar Berry, Catherine Marie Pottier-Metz, John R. Campbell, Jack Lew Little, Kenneth G. Powell
Patented Case
View Patent ↗
Granted: Jun 23, 1998
Filed: Nov 17, 1995
Inventors
William D. Richards
Greg R. Bradtke
Robert H. Wildi
Linda McAdam Gemmell
Jack A. Hill
Vinod Kumar Berry
Catherine Marie Pottier-Metz
John R. Campbell
Jack Lew Little
Kenneth G. Powell
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.