Granted Patent
Utility
US 6,709,504 · App. 10/258,314
Emulsion and water-repellent composition
Inventors:
Satoko Iwato, Mureo Kaku
Patented Case
View Patent ↗
Granted: Mar 23, 2004
Filed: Oct 18, 2002
Inventors
Satoko Iwato
Mureo Kaku
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.