Toothbrush
CA 2495388 A1 · Owner: Colgate-Palmolive Company · Inventors: Hohlbein, Douglas J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A toothbrush (10)includes a head (14) having multiple cleaning elements (24 26). One set of the cleaning elements is longer than the other and relatively rigid. That set (24) alternates with a shorter springier set (26) of cleaning , elements (24 26). The flexibility of the shorter springier cleaning elements (26) facilitates penetration of the longer cleaning elements (24) into the interproximal area of the user's teeth.
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 August 18, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 18, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 18, 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.