Granted Patent
Utility
US 5,153,310 · App. 07/317,177
IL-2 analogs containing N-linked glycosylation sites
Inventors:
Kenneth F. Mitchell, Carol A. Vallone
Patented Case
View Patent ↗
Granted: Oct 6, 1992
Filed: Feb 28, 1989
Inventors
Kenneth F. Mitchell
Carol A. Vallone
Assignee (at issue)
The DuPont Merck Pharmaceutical 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.