Toothbrush head
CA 2622802 C · Owner: Mangan, Edward J. · Inventors: Hans, Rainer; Majthan, Rudolf; Brown, William R. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A toothbrush head having a free end and a top surface with a plurality of holes. A plurality of elastomeric elements extend from the head each from an anchor disposed in one of the holes in the head. A first bristle tuft is disposed adjacent the free end wherein the length of the bristles gets relatively shorter in a direction towards the handle. A plurality of second bristle tufts are included which have a length which is less than the lengths of the elastomeric elements.
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, 2004 and granted September 25, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 9, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 9, 2026.
- 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.