Granted Patent
Utility
US 4,820,729 · App. 06/248,172
N-substituted-amido-amino acids
Inventors:
Raymond D. Youssefyeh, Jerry W. Skiles, John T. Suh, Howard Jones
Patented Case
View Patent ↗
Granted: Apr 11, 1989
Filed: Mar 30, 1981
Inventors
Raymond D. Youssefyeh
Jerry W. Skiles
John T. Suh
Howard Jones
Assignee (at issue)
Rorer Pharmaceutical Corporation
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.