Granted Patent
Utility
US 4,774,227 · App. 06/829,809
Collagen compositions for bone repair containing autogeneic marrow
Inventors:
Karl A. Piez, Shlomo Weintraub
Patented Case
View Patent ↗
Granted: Sep 27, 1988
Filed: Feb 14, 1986
Inventors
Karl A. Piez
Shlomo Weintraub
Assignees (at issue)
COLLAGEN CORPORATION
RAMOT
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.