Granted Patent
Utility
US 6,579,338 · App. 09/893,468
Controlled release urea-formaldehyde liquid fertilizer resins with high nitrogen levels
Inventors:
Stacey L. Wertz, Lisa M. Arthur, George E. Mirous, Kurt D. Gabrielson
Patented Case
View Patent ↗
Granted: Jun 17, 2003
Filed: Jun 29, 2001
Inventors
Stacey L. Wertz
Lisa M. Arthur
George E. Mirous
Kurt D. Gabrielson
Assignee (at issue)
GEORGIA-PACIFIC RESINS, 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.