Granted Patent
Utility
US 4,249,934 · App. 05/943,810
1,2-Alkylene-4-substituted urazole herbicides
Inventors:
Osamu Wakabayashi, Kuni Matsuya, Hiroki Ohta, Tetsuo Jikihara, Seiichi Suzuki
Patented Case
View Patent ↗
Granted: Feb 10, 1981
Filed: Sep 19, 1978
Inventors
Osamu Wakabayashi
Kuni Matsuya
Hiroki Ohta
Tetsuo Jikihara
Seiichi Suzuki
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.