Granted Patent
Utility
US 5,329,010 · App. 07/840,862
Quinone derivatives
Inventors:
Yasushi Okamoto, Katsuya Tagami, Shigeki Hibi, Hirotoshi Numata, Tetsuya Kawahara, Naoki Kobayashi, Masanobu Shinoda, Koukichi Harada, Kaname Miyamoto, Koichi Abe
Patented Case
View Patent ↗
Granted: Jul 12, 1994
Filed: Feb 25, 1992
Inventors
Yasushi Okamoto
Katsuya Tagami
Shigeki Hibi
Hirotoshi Numata
Tetsuya Kawahara
Naoki Kobayashi
Masanobu Shinoda
Koukichi Harada
Kaname Miyamoto
Koichi Abe
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.