Granted Patent
Utility
US 6,555,220 · App. 10/060,362
Composite fiber having favorable post-treatment processibility and method for producing the same
Inventors:
Tadashi Koyanagi, Takao Abe, Teruhiko Matsuo, Yousei Mitsumori
Patented Case
View Patent ↗
Granted: Apr 29, 2003
Filed: Feb 1, 2002
Inventors
Tadashi Koyanagi
Takao Abe
Teruhiko Matsuo
Yousei Mitsumori
Assignee (at issue)
ASAHI KASEI KABUSHIKI KAISHA
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.