Granted Patent
Utility
US 6,159,901 · App. 09/446,588
6-phenoxy picolinic acid alkylidene hydrazide derivative, process for producing the same and herbicide using the same
Inventors:
Hisashi Kanno, Kazuo Yoshida, Tsutomu Sato, Koki Sato, Yoichi Kanda
Patented Case
View Patent ↗
Granted: Dec 12, 2000
Filed: Feb 23, 2000
Inventors
Hisashi Kanno
Kazuo Yoshida
Tsutomu Sato
Koki Sato
Yoichi Kanda
Assignee (at issue)
Kureha Kagaku Kogyo Kabushiki Kaisha
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.