Granted Patent
Utility
US 4,528,020 · App. 06/505,016
Urease inhibited urea based fertilizer compositions
Inventors:
Jaroslav F. Kolc, Michael D. Swerdloff, Milorad M. Rogic, Larry L. Hendrickson
Patented Case
View Patent ↗
Granted: Jul 9, 1985
Filed: Jun 16, 1983
Inventors
Jaroslav F. Kolc
Michael D. Swerdloff
Milorad M. Rogic
Larry L. Hendrickson
Assignee (at issue)
ALLIED CONSULTING, 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.