Granted Patent
Utility
US 5,290,626 · App. 07/832,743
Microfibers-generating fibers and a woven or non-woven fabric of microfibers
Inventors:
Hiroaki Nishioi, Satoshi Ogata, Yoshimi Tsujiyama
Patented Case
View Patent ↗
Granted: Mar 1, 1994
Filed: Feb 7, 1992
Inventors
Hiroaki Nishioi
Satoshi Ogata
Yoshimi Tsujiyama
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.