Granted Patent
Utility
US 4,440,677 · App. 06/506,465
Method and intermediates for producing .alpha.-L-aspartyl-L-phenylalanine
Inventors:
Hugh L. Dryden, John B. Hill
Patented Case
View Patent ↗
Granted: Apr 3, 1984
Filed: Jun 20, 1983
Inventors
Hugh L. Dryden
John B. Hill
Assignee (at issue)
G.D. Searle LLC
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.