High frequency heating device which is safe when its exterior is removed
CA 2210678 C · Owner: Murata, Junji · Inventors: Kawamura, Kazuhiko; Murata, Junji; Yamauchi, Hideki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A high frequency heating device according to the present invention has a switching member screwed into a screw hole formed in a flange and thus fixed to the exterior. When the exterior is fixed to the body a, through hole formed at that portion in the rear plate of the body through which the switching member passes is too large for the switching member. Thus, while switching member is fixable to the exterior, the switching member cannot be fixed to the body onto which the exterior is not mounted. Thus, a high frequency heating device can be provided, wherein an exterior switch more surely keeps the power supply circuit open when the exterior is removed.
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 July 17, 1997 and granted September 19, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 17, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 17, 2019.
- 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.