Toothbrush having a head which includes two portions
CA 2654695 C · Owner: Claire, Karen · Inventors: Masterman, Thomas Craig; Bredall, William A.; Schreck, James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A toothbrush includes a head having bristle tufts implanted therein. At least two of the tufts cross so as to permit at least some the bristles to intermingle. One of the two tufts is located adjacent a long side of the head.
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 May 10, 2001 and granted August 25, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 10, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 10, 2023.
- 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.