Device for hyperthermia treatment
CA 2118789 C · Owner: Wallsten, Hans Ivar · Inventors: Wallsten, Hans Ivar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for carrying out so called hyperthermia in a body cavity or duct, the access path of which is narrow, characterized by an elongate distal section (3) intended to be inserted into said cavity or dud comprising a centrally located) heat-releasing element (19), which is either surrounded by an elongate housing or is itself constituted by an elongate housing, and a flexible and/or: elastic enclosure (37) surrounding said housing in a liquid-tight manner) further including means (13, 15) for supplying energy to the heat-releasing element (19) and an axially operating inlet passage (35) at the proximal part of the housing, an outlet (33; 68; 87) from the housing being arranged for the …
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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 September 18, 1992 and granted November 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 18, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 18, 2014.
- 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.