Method for far-infrared drying of food under reduced pressure at low temperature
CA 2234268 C · Owner: Ono, Takuji · Inventors: Ono, Takuji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a method of sterilizing and dewatering food in a shortened length of time, still permitting the processed food to remain an elongated length of time in good taste. The inner pressure of the insulated dryer is raised by feeding nitrogen gas after evacuating the insulating dryer and at the same, time, pieces of food are exposed to the spray of ethanol so that the, oxygen gas remaining in the tissue of food may be replaced by nitrogen gas to prevent oxidization of food, and at the same time ethanol, penetrates the food well for sterilization. Next the inner pressure of, the insulating dryer is reduced by removing nitrogen gas therefrom and, the pieces of food are exposed to the …
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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 October 11, 1996 and granted January 28, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 11, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 11, 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.