Granted Patent
Utility
US 6,825,255 · App. 10/427,412
Polyvinyl butyral sheet having antiblocking characteristics
Inventors:
Ping Yuan, John Joseph D'Errico
Patented Case
View Patent ↗
Granted: Nov 30, 2004
Filed: May 1, 2003
Inventors
Ping Yuan
John Joseph D'Errico
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.