Granted Patent
Utility
US 4,828,989 · App. 06/828,327
Process for purifying a protein
Inventors:
Chrisopher P. Prior, Garance M. Ducommun
Patented Case
View Patent ↗
Granted: May 9, 1989
Filed: Feb 4, 1986
Inventors
Chrisopher P. Prior
Garance M. Ducommun
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.