A safety cap for the pressure release valve of a pressure cooker and a pressure cooker using the same
CA 2454316 A1 · Owner: Hasegawa, Tom Hiroshi · Inventors: Hasegawa, Tom Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A safety cap made of a mesh casing body and attachment frame and attached by snap-fitting or screw engagement to the pressure release valve of a pressure cooker or to the inner, surface of the lid of the cooker so as to cover the pressure release valve thus allowing no, food particles to reach the pressure release valve and preventing the pressure release valve, from being clogged.
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 December 29, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 29, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 29, 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.