Granted Patent
Utility
US 5,976,186 · App. 08/670,140
Hydrogel intervertebral disc nucleus
Inventors:
Qi-Bin Bao, Paul Higham
Patented Case
View Patent ↗
Granted: Nov 2, 1999
Filed: Jun 25, 1996
Inventors
Qi-Bin Bao
Paul Higham
Assignee (at issue)
Stryker Technologies 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.