Apparatus and method for the deep cryogenic treatment of materials
CA 1284723 C · Owner: Cryogenics International, Inc. · Inventors: Smith, James A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure Apparatus and method for the ultralow, temperature processing of metallic carbide, ceramic, and plastic parts and items to materially increase their wear, abrasion, erosion and corrosion resistivity, stabilize their strength characteristics improve their machinability and provide stress relief. An insulated box-like treatment chamber is disclosed which includes a perforated platform extending parallel to and spaced above the bottom of the chamber. Parts and items to be treated are supported on the platform and cryogenic liquid is introduced into the chamber below the platform in accordance with a time-temperature program which reduces the temperature of the parts …
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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
- Granted June 11, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 11, 2008.
- 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.