Process for testing the freeze-thaw resistance of solids
CA 2261189 A1 · Owner: Setzer, Max · Inventors: Setzer, Max
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The solid to be tested (1) is preconditioned by drying it to a specified moisture content and its load surface (1a) inserted downward into a test container (2) which takes up test liquid (3) completely wetting the load , surface. The test container is immersed in a temperature-equalization bath (7) which is temperature controlled. The test liquid (3) is subjected to a predetermined temperature-time profile simulating a freeze-thaw cycle by means of the temperature-equalization bath. Then at least one comparison , measurement is taken to determine the change in a physical quantity representative of the inner damage to the solid. From the comparative physical values measured, the inner …
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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 June 19, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 19, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 19, 2019.
- 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.