Apparatus for separating contaminants from refrigerant
CA 2005805 A1 · Owner: Roads Corporation · Inventors: Graham, Jeffrey A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for separating and removing contaminants from refrigerant of a vapour compression refrigeration system. The apparatus has a primary separation chamber a refrigerant, inlet through which contaminated refrigerant is introduced into the primary separation chamber, and a refrigerant outlet through which de-contaminated refrigerant is removed from the apparatus. The contaminants separated from the refrigerant are discharged through a contaminant outlet. Heating means vapourizes the contaminated refrigerant so that vapourized refrigerant in the primary separation chamber separates from solid contaminants and liquid contaminants having a boiling point higher than the refrigerant. The …
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 December 18, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 18, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 18, 2011.
- 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.