Granted Patent
Utility
US 4,776,879 · App. 07/046,647
Water insoluble triazone fertilizer and methods of making and use
Inventors:
Edwin F. Hawkins, John G. Clapp, Jr.
Patented Case
View Patent ↗
Granted: Oct 11, 1988
Filed: May 7, 1987
Inventors
Edwin F. Hawkins
John G. Clapp, Jr.
Assignee (at issue)
Triazone Corporation
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.