Granted Patent
Utility
US 6,274,237 · App. 09/574,223
Potentially crimpable composite fiber and a non-woven fabric using the same
Inventors:
Yuji Nakajima, Koji Minamoto, Masayasu Suzuki
Patented Case
View Patent ↗
Granted: Aug 14, 2001
Filed: May 19, 2000
Inventors
Yuji Nakajima
Koji Minamoto
Masayasu Suzuki
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.