Granted Patent
Utility
US 6,503,624 · App. 09/885,963
Carbon fiber precursor fiber bundle and manufacturing method of the same
Inventors:
Katsuhiko Ikeda, Masakazu Hoshino, Takayoshi Yamamoto, Aritaka Shimotashiro, Toshihiro Makishima, Masashi Okamoto
Patented Case
View Patent ↗
Granted: Jan 7, 2003
Filed: Jun 22, 2001
Inventors
Katsuhiko Ikeda
Masakazu Hoshino
Takayoshi Yamamoto
Aritaka Shimotashiro
Toshihiro Makishima
Masashi Okamoto
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.