Granted Patent
Utility
US 5,631,315 · App. 08/088,147
Plasticized polyvinyl butyral sheet containing epoxy resin
Inventor:
John Joseph D'Errico
Patented Case
View Patent ↗
Granted: May 20, 1997
Filed: Jul 1, 1993
Inventor
John Joseph D'Errico
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.