IP Library › Granted Patent US 4,449,998
Granted Patent Utility
US 4,449,998 · App. 06/380,191

Herbicidally active oxadiazole ureas

Inventors: Jerome M. Lavanish, Barry Van Gemert
Patented Case View Patent ↗
Granted: May 22, 1984 Filed: May 20, 1982
Inventors
Jerome M. Lavanish
Barry Van Gemert
Assignee (at issue)
PPG Industries, Inc.

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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 4,449,998
App. No.
06/380,191
Filed
1982-05-20
Granted
1984-05-22
Kind
A