Granted Patent
Utility
US 4,227,919 · App. 06/064,243
1-Hydroxy-2-(alkylketo)-4,4,6,6-tetramethyl cyclohexen-3,5-dione herbicides
Inventors:
Reed A. Gray, Chien K. Tseng, Ronald J. Rusay
Patented Case
View Patent ↗
Granted: Oct 14, 1980
Filed: Aug 6, 1979
Inventors
Reed A. Gray
Chien K. Tseng
Ronald J. Rusay
Assignee (at issue)
Stauffer Chemical Company
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.