Granted Patent
Utility
US 6,020,505 · App. 09/210,663
Process for the preparation of .alpha.-tocopherol
Inventors:
Noriyasu Hirose, Hiroshi Inoue, Toshio Matsunami, Takashi Yoshimura, Kouzou Morita, Yuh Horikawa, Noriyoshi Iwata, Norio Minami, Kenji Hayashi, Chiaki Seki
Patented Case
View Patent ↗
Granted: Feb 1, 2000
Filed: Dec 14, 1998
Inventors
Noriyasu Hirose
Hiroshi Inoue
Toshio Matsunami
Takashi Yoshimura
Kouzou Morita
Yuh Horikawa
Noriyoshi Iwata
Norio Minami
Kenji Hayashi
Chiaki Seki
Assignee (at issue)
Eisai Inc.
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.