Method and device for puffing foodstuffs
CA 2221870 C · Owner: Bichsel, Rudolf · Inventors: Bichsel, Rudolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The proposal is for a process and device for popping foodstuffs especially cereals and pulses, in which the product is placed in a container (36) into which a pressurised (pi) heat-conducting agent (84) is introduced from outside. After the agent (84) has been flowing into the container (36) for a given time and shortly before the container (36) is opened, a product-free region behind the product (32) looked at in the direction of extraction (89) of the product (32) is subjected to an additional higher pressure (p2), thus creating a "propellant".
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 May 30, 1996 and granted April 16, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 30, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 30, 2018.
- 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.