Granted Patent
Utility
US 4,904,668 · App. 07/101,005
Benzoyl urea compound
Inventors:
Nobuo Kondo, Masahiro Kikuchi, Tsunetaka Nakajima, Masahiro Watanabe, Kazumasa Yokoyama, Takahiro Haga, Nobutoshi Yamada, Hideo Sugi, Toru Koyanagi
Patented Case
View Patent ↗
Granted: Feb 27, 1990
Filed: Sep 25, 1987
Inventors
Nobuo Kondo
Masahiro Kikuchi
Tsunetaka Nakajima
Masahiro Watanabe
Kazumasa Yokoyama
Takahiro Haga
Nobutoshi Yamada
Hideo Sugi
Toru Koyanagi
Assignees (at issue)
ISHIHARA SANGYO KAISHA, LTD.
Green Cross 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.