Praf toothbrush
CA 2284301 A1 · Owner: Akram, Ashfaq · Inventors: Akram, Ashfaq
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
For the use of toothbrush to clean the teeth it is recommended that the head , of the toothbrush should be placed beside teeth with the bristle tips at a 45 degree angle, against the gum line. Sodium Fluoride or mouth wash are used to fight cavities tartan and many , other gum, diseases. In PRAF Toothbrush rectangular head with rounded edges contains bristles in five, rows. They are classified as:, Bristle of outer row. Bristles of intermediate row. Bristle of central row. Bristles of all rows Do not have the same length. Instead inclined cutting of , bristles, making 45 degree angle with horizontal plane is the unique characteristic of PRAF, toothbrush as shown in figure 1 & 2. Tuft of …
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 16, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 16, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 16, 2021.
- 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.