Granted Patent
Utility
US 4,485,049 · App. 06/455,394
Two-stage crystallization of nitrilotriacetonitrile from a hot solution
Inventors:
Kent P. Lannert, Chung Y. Shen, Dat S. Trieu
Patented Case
View Patent ↗
Granted: Nov 27, 1984
Filed: Jan 3, 1983
Inventors
Kent P. Lannert
Chung Y. Shen
Dat S. Trieu
Assignee (at issue)
Monsanto Company
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.