Granted Patent
Utility
US 6,245,423 · App. 09/594,176
Thick acrylic fiber tows for carbon fiber production and methods of producing and using the same
Inventors:
Katsuhiko Ikeda, Toshihiro Makishima, Nobuyuki Fukuen
Patented Case
View Patent ↗
Granted: Jun 12, 2001
Filed: Jun 15, 2000
Inventors
Katsuhiko Ikeda
Toshihiro Makishima
Nobuyuki Fukuen
Assignee (at issue)
MITSUBISHI ELECTRIC 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.