Granted Patent
Utility
US 5,328,989 · App. 08/026,942
Purification of human interleukin-10 from a cell culture medium
Inventors:
Gary Vellekamp, Susan V. Cannon-Carlson, John Chu-Tay Tang
Patented Case
View Patent ↗
Granted: Jul 12, 1994
Filed: Mar 5, 1993
Inventors
Gary Vellekamp
Susan V. Cannon-Carlson
John Chu-Tay Tang
Assignee (at issue)
Schering-Plough 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.