Expired Canadian patentCanada
Antibacterial antiplaque oral composition containing novel styrene-phosphonic acid copolymer
CA 2006707 C · Owner: Colgate-Palmolive Company · Inventors: Gaffar, Abdul; Stringer, Orum
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Beta styrenephosphonic acid polymer, alpha-styrenephosphonic acid polymer and copolymers of either styrenephosphonic acid with at least one other ethyleneically unsaturated polymerizable monomer.
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 December 27, 1989 and granted January 30, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 27, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 27, 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.
FiledDecember 27, 1989
GrantedJanuary 30, 2001
Term endedDecember 27, 2009
Patent numberCA 2006707 C
Classification (IPC)C08F230/02 +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.