Horizontal carbon dioxide snow horn with adjustment for desired snow
CA 2278398 C · Owner: Rhoades, George D. · Inventors: Rhoades, George D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus is provided herein to produce solid CO2 from liquid CO2 wherein the solid CO2 may be adjusted for level of agglomeration and can be continuously delivered through a snow horn in a horizontal or substantially horizontal orientation. The invention finds particular use in confined spaces such as between a freezer infeed conveyor and the freezer conveyor.
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 July 21, 1999 and granted February 18, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 21, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 21, 2021.
- 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.