Method and apparatus for reclaiming a refrigerant
CA 2084088 C · Owner: Todack, James J. · Inventors: Todack, James J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The object of the invention is to provide a method and apparatus for reclaiming refrigerants which includes a refrigerant boiler (6) having a refrigerant inlet (1) for admitting contaminated refrigerant into the boiler (6). The suction inlet of compressor (23) is connected to the vapor outlet of boiler (6) for lowering the pressure and temperature in the boiler (6) which draws the refrigerant into the boiler (6) from the refrigerant inlet (1) and causes the refrigerant to vaporize and separate from most of the contaminates contained therein. A condenser (28) is connected to the outlet of compressor (23) for receiving a heated compressed refrigerant vapor and the condenser (28) is …
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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 May 24, 1991 and granted July 31, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 24, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 24, 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.