Device to freeze free-flowing and pourable substances
CA 2042686 A1 · Owner: Gorlich, Uwe · Inventors: Weyermanns, Gunther; Gorlich, Uwe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A device to freeze free-flowing and pourable substances in a bath consists of a bath for a low-boiling liquified gas located inside an insulated housing having openings for the introduction of the substances to be frozen and the gas as well as for the removal of the frozen substances. The bath is located in a rotatable hollow cylinder having a rotational axis tilted with respect to the horizontal plane. The inner wall of the cylinder has a ribbon screw above whose lowest point there is a feed mechanism for the substances to be frozen.
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 May 15, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 15, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 15, 2013.
- 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.