Granted Patent
Utility
US 5,380,794 · App. 08/144,379
Polyvinyl butyral tackifier for vinyl chloride polymer compositions
Inventors:
Richard E. Schaefer, James T. Renshaw, Peter M. Maino
Patented Case
View Patent ↗
Granted: Jan 10, 1995
Filed: Nov 2, 1993
Inventors
Richard E. Schaefer
James T. Renshaw
Peter M. Maino
Assignee (at issue)
Monsanto Company
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.