Method for adhering to hard tissue
CA 2126344 C · Owner: Fundingsland, Jon W. · Inventors: Fundingsland, Jon W.; Oxman, Joel D.; Mitra, Sumita B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a pretreatment method and primer that is applied directly to the hard tissue. The invention has particular utility for adhering to or coating sclerotic dentin and cervical enamel or for adhering to or coating hard tissue in a high humidity environment. The primer enables formation of extremely strong bonds to dentin. The method comprises tie steps of: (a) applying to the hard tissue adhesively effective amounts of an acid and a waterdispersible film former comprising a polymer and (b) hardening the film former. Primer compositions are provided far use in this method, comprising a mixture of an acid and a film former comprising a polymer prior to hardening the …
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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 30, 1992 and granted May 20, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 30, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 30, 2014.
- 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.