Granted Patent
Utility
US 4,959,314 · App. 06/698,939
Cysteine-depleted muteins of biologically active proteins
Inventors:
David F. Mark, Leo S. Lin, Shi-Da Yu Lu, Alice M. Wang
Patented Case
View Patent ↗
Granted: Sep 25, 1990
Filed: Feb 7, 1985
Inventors
David F. Mark
Leo S. Lin
Shi-Da Yu Lu
Alice M. Wang
Assignee (at issue)
Cetus 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.