A device serving as indicator of thermal history especially for frozen products and the like
CA 2135076 A1 · Owner: Bianchini, Marco · Inventors: Bianchini, Marco
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device serving as an indicator of thermal history namely for, frozen products and the like consisting of a container (10) of, non-opaque material containing a fluid (12) with controlled viscosity as a function of temperature; a mobile portion (13) having a controlled geometry capable of moving in such a fluid as a result of a force applied by an elastic member (14); holding means (17) which can be released, designed to retain such a mobile member in an initial position at room temperature and when the device is frozen; the arrangement being such that after freezing and the release of such holding means the mobile portion is displaced in another position as a result of the force applied …
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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 May 7, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 7, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 7, 2015.
- 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.