Granted Patent
Utility
US 4,889,919 · App. 06/942,484
Biologically active PDGF derived A-chain homodimers
Inventors:
Mark J. Murray, James D. Kelly
Patented Case
View Patent ↗
Granted: Dec 26, 1989
Filed: Dec 15, 1986
Inventors
Mark J. Murray
James D. Kelly
Assignee (at issue)
ZYMOGENETICS 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.