Granted Patent
Utility
US 5,728,862 · App. 08/790,113
Method for preparing and purifying an N-alkylated aspartame derivative
Inventor:
Indra Prakash
Patented Case
View Patent ↗
Granted: Mar 17, 1998
Filed: Jan 29, 1997
Inventor
Indra Prakash
Assignee (at issue)
The NutraSweet 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.