Dental hygiene device
CA 1314159 C · Owner: Martin, Roy W. · Inventors: Engel, L. David; Martin, Roy W.; Miller, Josef M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A method and apparatus for demobilizing the motile subgingival bacteria and for removing soft plaque from the teeth on a substantially daily basis as a means to prevent treat and/or limit periodontal diseases. A piezoelectric multimorph transducer is used to generate low-energy vibrations these vibrations are applied to the teeth and gingival fluids to cause mild cavitation within the fluid to remove subgingival plaque and to demobilize motile bacteria. Means for driving the transducer at its resonant frequency or multiples thereof and for electrically isolating the user are included.
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
- Granted March 9, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 9, 2010.
- 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.