Granted Patent
Utility
US 6,797,737 · App. 09/602,311
Crosslinked foam of ethylene vinyl acetate copolymer and acid copolymer
Inventors:
Chin-Fu Hsu, Richard T. Chou, Wayne C. Whelchel, Yun-Tong Ou
Patented Case
View Patent ↗
Granted: Sep 28, 2004
Filed: Jun 23, 2000
Inventors
Chin-Fu Hsu
Richard T. Chou
Wayne C. Whelchel
Yun-Tong Ou
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND 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.