Defrosting detector
CA 2376222 A1 · Owner: Koecher, Wolfgang · Inventors: Koecher, Wolfgang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention, called a Defrost Detector relates to the prevention of food , spoilage and if consumed may lead to consequent food poisoning. It is a temperature sensitive device. It senses, if the food was exposed to above freezing temperatures (defrosting conditions) for a longer, period of time by displaying a clearly visible warning color indication. The activation of this, device can not be reversed which makes it tamperproof. It is a food freezing accessory and, should be used in the food industry where food is packaged shipped, stored , and frozen for later consumption. The devices is to become part of the frozen food package and has to be installed or, mounted in such a way …
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 19, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 19, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 19, 2024.
- 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.