Granted Patent
Utility
US 6,759,446 · App. 10/137,037
Polymer nanocomposite foams
Inventors:
L. James Lee, Kurt Koelling, David Tomasko, Xiangmin Han, Changchun Zeng
Patented Case
View Patent ↗
Granted: Jul 6, 2004
Filed: May 2, 2002
Inventors
L. James Lee
Kurt Koelling
David Tomasko
Xiangmin Han
Changchun Zeng
Assignee (at issue)
The Ohio State University Research Foundation
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.