Toothbrush
CA 2496555 C · 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 (18 22). One group of the cleaning elements (18) is mounted on a movable portion (17) of the head (14) and another group (22) may be fixedly mounted on the head (14). The movable portion (17) of the head is attached by a flexible membrane (20) to the fixed portion (15) of the head so that the membrane (20) is capable of flexing to alter its original orientation during use of the toothbrush and then recover to the original orientation randomly during use.
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 26, 2003 and granted February 21, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 26, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 26, 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.