Power toothbrush
CA 2498868 A1 · Owner: Goldfine, Henry S. · Inventors: Goldfine, Henry S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A power operated toothbrush comprises a hollow handle (12) and a head (14) mounted to the handle. A power drive assembly (16 18, 20) is in the handle , operatively connected to a movable section (24) in the head (14) for moving that section. Cleaning elements (30) extend outwardly from the movable section. A bumper (40) is secured to the peripheral side wall (42) of the head (14). The bumper is made of a soft yieldable material to prevent injury to the teeth and gums and to act as a cushion to minimize high intensity vibration and to deaden sound which would result during use of the power operated toothbrush.
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 September 17, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 17, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 17, 2025.
- 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.