Implantable prosthetic or tissue expanding device
CA 2444629 A1 · Owner: St. Francis Medical Technologies, Inc. · Inventors: Smith, Robert A.; Hsu, Ken Y.; Zucherman, James F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A keratin hydrogel-filled implantable prosthetic device is claimed. The device is an implant for the intervertebral disc space. One source of keratin is human hair. The device (504) can comprise envelopes of a keratin hydrogel (502) that may be used for partial or full disc replacement. The envelopes may be encased in an outer wall (506).
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed March 20, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 20, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 20, 2024.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.