Granted Patent
Utility
US 6,642,406 · App. 09/859,438
Synthesis of N-[N-(3,3-dimethylbutyl)-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester using L-&agr;-aspartyl-L-phenylalanine 1-methyl ester precursors
Inventors:
Indra Prakash, Zhi Guo, Steve Schroeder, Kurt Wachholder
Patented Case
View Patent ↗
Granted: Nov 4, 2003
Filed: May 18, 2001
Inventors
Indra Prakash
Zhi Guo
Steve Schroeder
Kurt Wachholder
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.