Cryogenic freezer
CA 1184395 A · Owner: Air Products And Chemicals, Inc. · Inventors: Mcwhorter, Thomas E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention is directed to an apparatus for freezing an article under cryogenic conditions which comprises a housing encompassing an entry port a, freezing station, an exit station and an exit port being at a greater vertical elevation than the entry port and freezing station. In connection with the housing, there are means provided for transporting the article to be frozen sequentially from the entry port entry station, through the freezing station and then, to the exit station, preferably at a rate of travel which increases as the article is being transported through the exit station. A connection is made to the housing permitting the introduction of a cryogen into the freezing station …
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
- Granted March 26, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 26, 2002.
- 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.