Expired Canadian patentCanada
Implant for use in bone surgery
CA 2004166 C · Owner: Pfirrmann, Rolf Wilhelm · Inventors: Pfirrmann, Rolf Wilhelm
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A lyophilised collagen sponge for use as an implant in osteitis and other bone cavities, said sponge having dispersed therein antibacterially effective quantitites of taurolidine and/or taurultam.
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 November 29, 1989 and granted September 7, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 29, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 29, 2011.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 29, 1989
GrantedSeptember 7, 1999
Term endedNovember 29, 2009
Patent numberCA 2004166 C
Classification (IPC)A61K9/00 +2 more
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.