Granted Patent
Utility
US 5,310,688 · App. 08/035,549
Method and apparatus for eluting proteins in affinity membrane process
Inventors:
Stephen E. Zale, Clark K. Colton
Patented Case
View Patent ↗
Granted: May 10, 1994
Filed: Mar 23, 1993
Inventors
Stephen E. Zale
Clark K. Colton
Assignee (at issue)
Sepracor, Inc.
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.