Granted Patent
Utility
US 4,795,467 · App. 06/848,443
Xenogeneic collagen/mineral preparations in bone repair
Inventors:
Karl A. Piez, Bruce B. Pharriss, George H. Chu, Thomas L. Smestad, Diana Hendricks
Patented Case
View Patent ↗
Granted: Jan 3, 1989
Filed: Apr 4, 1986
Inventors
Karl A. Piez
Bruce B. Pharriss
George H. Chu
Thomas L. Smestad
Diana Hendricks
Assignee (at issue)
COLLAGEN 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.