Hot or cold applicator with inner element
CA 2320213 A1 · Owner: Der Ovanesian, Mary · Inventors: Der Ovanesian, Mary
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A flexible heat transfer device (1) for heating or cooling a surface such as the skin has an envelope (2) formed from two double walled sheets (3 4). Each , sheet contains within the double wall a first high thermal capacity material (11) such as a freezing gel that is flexible when frozen for good surface contact. The space (13) between the double walls contains a second high thermal capacity material (12) that may have different physical properties than the first material. This may be in the form of a removable pouch insert (24) that may be heated or cooled separately. The device is more versatile in its applications and provides for more prolonged heating and cooling.
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 January 30, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 30, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 30, 2020.
- 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.