Granted Patent
Utility
US 5,677,311 · App. 08/595,261
Aminobenzoic acid derivatives
Inventors:
Shuhei Miyazawa, Yorihisa Hoshino, Hisashi Shibata, Kazuo Hirota, Takaaki Kameyama, Shinya Abe, Takashi Yamanaka
Patented Case
View Patent ↗
Granted: Oct 14, 1997
Filed: Feb 1, 1996
Inventors
Shuhei Miyazawa
Yorihisa Hoshino
Hisashi Shibata
Kazuo Hirota
Takaaki Kameyama
Shinya Abe
Takashi Yamanaka
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.