System and method for channeled freeze processing of non-solid materials
CA 2288931 A1 · Owner: Scherer, J. Stirling · Inventors: Scherer, J. Stirling; Scherer, Frank J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system (50) for the processing of materials includes a freezing section (52) and a thawing section (54), with elongated channels extending through both sections (52, 54), and gates between the sections (52 54) and at the output , of the thawing section (54). Large blocks of frozen material are slid from the freezing section (52) to the thawing section (54); and a new batch of material is frozen with the heat from the freezing section (52) used to thaw the blocks of frozen material. A harvest bar (60) with dogs (64) extending into the frozen material traverses at least the freezing section (52) and spray , nozzles associated with the harvest bar (60) may be used for cleaning 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 May 8, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 8, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 8, 2020.
- 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
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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.