Dental strip
CA 2118629 C · Owner: Czapor, Henry P. · Inventors: Czapor, Henry P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved dental strip which includes a dental rubber tube with a reduced silicon coating and wherein the talcum powder generally used between the inner surfaces of the rubber tube is replaced with by a flavoring compound which is preferably in the form of a tooth powder such as baking soda. Many flavoring compounds may be used such as those which impart a fresh mint taste plus a medicament (e. g. fluoride) which is effective to inhibit the formation of dental caries. Baking soda as eluded to above will neutralize the odor. A further improvement and alternative embodiment of the present invention involves improving the appearance of the dental strip and making it easier to remove from a …
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 March 9, 1994 and granted August 31, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 9, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 9, 2016.
- 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.