Granted Patent
Utility
US 6,093,471 · App. 09/246,680
Polyvinyl butyral sheet
Inventors:
Harold H. Hopfe, Vincent J. Yacovone, Gary Matis, David Paul Bourcier
Patented Case
View Patent ↗
Granted: Jul 25, 2000
Filed: Feb 8, 1999
Inventors
Harold H. Hopfe
Vincent J. Yacovone
Gary Matis
David Paul Bourcier
Assignee (at issue)
Soliton, Inc.
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.