Method and device for producing the whitening of live teeth with pathological and normal colorations
CA 1293630 C · Owner: Zaragoza, Vincente M.T. · Inventors: Zaragoza, Vincente M.T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and a device are described for producing the whitening of live teeth with pathological and normal colorations, destined to whitening any tooth with normal colour and furthermore eliminating the pathological coloration produced by aetiologies of different origen. The whitening of the teeth (6) is effected applying different chemical products to the dental enamel, covering the teeth to be treated with a metallic plate containing an absorbent material with a chemical whitening product which acts in the presence of heat and provokes the reaction of said product which will act on all sides of the dental drown producing, whitening of the teeth. The device is constituted in, essence, by a …
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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
- Granted December 31, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 31, 2008.
- 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.