Denture adhesive comprising a polymeric activator and methods of preparing the same
CA 2293282 C · Owner: Block Drug Company, Inc. · Inventors: Wong, Eddie; Synodis, Joseph; Smetana, Alfred J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A denture adhesive composition is disclosed and comprises a polymeric activator in an amount of up to about 3 percent by weight based on the total weight of the denture adhesive composition. This composition exhibits enhanced adhesive performance and reduces oozing and incidence of food occlusion. Also disclosed is a method of preparing a denture adhesive composition comprising: preparing a mixture which comprises a polymeric activator in an amount of up to about 3 percent by weight based on the total weight of the denture adhesive composition; forming a denture adhesive composition including the mixture; and recovering the denture adhesive composition. A method of making a denture …
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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 June 5, 1998 and granted February 25, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 5, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 2020.
- 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
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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.