Film extruded denture adhesive liner
CA 2425258 A1 · Owner: Gasman, Robert C. · Inventors: Wong, Eddie; Gasman, Robert C.; Ortiz, Johny
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A denture adhesive liner in the form of an extruded film or sheet comprising (a) a denture adhesive effective amount of a mixed partial salt of a copolymer of maleic acid and an alkyl vinyl ether and at least one cation wherein all , of said cations are selected from the group consisting of sodium potassium, calcium, strontium, magnesium zinc and zirconium oxy cations; (b) between about 30 and 90 wt.% of a thermoplastic polymer component; and (c) a plasticizer; wherein said composition is extrudable into a film that is capable of adhering to a wet mucous surface and/or acrylic plastic.
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 October 10, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 10, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 10, 2023.
- 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.