Expired Canadian patentCanada
One-pack dental adhesive composition comprising t-butanol as solvent
CA 2574296 C · Owner: Dentsply Detrey Gmbh · Inventors: Blackwell, Gordon B.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
One component dental adhesive composition having a pH of at most 3 comprising , (a) a polymerisable acrylate monomer or prepolymer (b) a photoinitiator, and , (c) a solvent comprising t-butanol.
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 May 13, 2005 and granted February 5, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 13, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 13, 2005
GrantedFebruary 5, 2013
Term endedMay 13, 2025
Patent numberCA 2574296 C
Classification (IPC)—
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.