Granted Patent
Utility
US 6,241,796 · App. 09/357,830
Method for producing fertilizer grade DAP having an increased nitrogen concentration from recycle
Inventors:
Kenneth J. Jardine, Vaughn V. Astley
Patented Case
View Patent ↗
Granted: Jun 5, 2001
Filed: Jul 21, 1999
Inventors
Kenneth J. Jardine
Vaughn V. Astley
Assignee (at issue)
IMC-Agrico Co.
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.