Granted Patent
Utility
US 4,307,245 · App. 06/137,658
Amitriptyline conjugates to antigenic proteins and enzymes
Inventors:
Mae W. Hu, Prithipal Singh
Patented Case
View Patent ↗
Granted: Dec 22, 1981
Filed: Apr 7, 1980
Inventors
Mae W. Hu
Prithipal Singh
Assignee (at issue)
Syva 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.