Granted Patent
Utility
US 6,436,855 · App. 09/658,801
Hydrophilic fiber and non-woven fabric, and processed non-woven products made therefrom
Inventors:
Masuo Iwata, Yoshihiro Nakai
Patented Case
View Patent ↗
Granted: Aug 20, 2002
Filed: Sep 11, 2000
Inventors
Masuo Iwata
Yoshihiro Nakai
Assignee (at issue)
Chisso Corporation
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.