Granted Patent
Utility
US 4,705,554 · App. 06/930,451
Benzofuranyloxyphenylurea derivative and herbicidal composition containing it as an active ingredient
Inventors:
Susumu Matsumoto, Shigeru Suzuki, Hisao Watanabe, Hiroshi Hanabe
Patented Case
View Patent ↗
Granted: Nov 10, 1987
Filed: Nov 14, 1986
Inventors
Susumu Matsumoto
Shigeru Suzuki
Hisao Watanabe
Hiroshi Hanabe
Assignee (at issue)
Mitsubishi Chemical Industries, Ltd.
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.