Granted Patent
Utility
US 4,959,092 · App. 07/198,287
Substituted phenyl (or pyridyl) urea compound and herbicidal composition containing the same as active ingredient
Inventors:
Hiroki Ohta, Katsutoshi Sato, Susumu Matsumoto, Kazuo Ishii, Yumiko Miura, Hisao Watanabe, Seiichi Suzuki, Yoichiro Umeki, Hiroshi Hanabe
Patented Case
View Patent ↗
Granted: Sep 25, 1990
Filed: May 25, 1988
Inventors
Hiroki Ohta
Katsutoshi Sato
Susumu Matsumoto
Kazuo Ishii
Yumiko Miura
Hisao Watanabe
Seiichi Suzuki
Yoichiro Umeki
Hiroshi Hanabe
Assignee (at issue)
Mitsubishi Kasei 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.