An electronic cigarette light source with a gradual changing luminance
CA 3040282 C · Owner: Fontem Holdings 1 B.V. · Inventors: Lik, Hon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electronic cigarette simulating a conventional cigarette is provided which comprises nicotine without harmful tar. The cigarette comprises a shell a cell, nicotine solution, control circuit and an electro-thermal vaporization nozzle installed in the air suction end of the shell and a light source configured to provide a gradual change in luminance via control by control circuit. The advantages of the present invention are smoking without tar reducing the risk of cancer, the user still gets a smoking experience the cigarette is not lit, and there is no fire danger.
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 8, 2004 and granted December 21, 2021. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 8, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 8, 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.