Refrigerating or freezing apparatus with vacuum compartment
CA 2548978 A1 · Owner: Wahlby, Urban · Inventors: Wahlby, Urban; Hue, Xavier; Pimputkar, Girish
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A refrigerator or freezer apparatus comprising: a cabinet (1) at least a compartment (2,3) to store food, a box (5) firmly lodged in said cabinet and closable in a vacuum-tight manner, a drawer (6) apt to be extracted and inserted in said box, a vacuum pump (7) connected to said box in the back side of it, a vacuum valve (13) able to selectively equalise the internal pressure in said box, wherein it comprises locking means and specially a tiltable , handle in the front side of said drawer able to connect or disconnect said , drawer to/from said box; said vacuum valve and/or said vacuum pump are operated by the tilting movement of said handle or by the closing movement of said drawer …
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 10, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 10, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 10, 2025.
- 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.