Granted Patent
Utility
US 6,348,192 · App. 09/310,026
Interleukin-2 mutein expressed from mammalian cells
Inventors:
Sham-Yuen Chan, Ruth Kelly
Patented Case
View Patent ↗
Granted: Feb 19, 2002
Filed: May 11, 1999
Inventors
Sham-Yuen Chan
Ruth Kelly
Assignee (at issue)
Bayer Aktiengesellschaft
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.