Granted Patent
Utility
US 4,547,582 · App. 06/658,013
Method of producing herbicide intermediates
Inventor:
Peter K. Wehrenberg
Patented Case
View Patent ↗
Granted: Oct 15, 1985
Filed: Oct 5, 1984
Inventor
Peter K. Wehrenberg
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.