Temperature attenuator to control heating of the contents of a container and a method of using the same
CA 2004160 C · Owner: Act Ii Prescott Corporation · Inventors: Roland, Paul G. Jr.; Roland, Paul G. Sr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A temperature attenuator (32, 42 or 64) is provided for spacing a container, such as a coffee container (24) from a warming hot plate (14 or 14'). The temperature attenuator has a thermally insulating spacer (34 66 or 66'), which may be secured to the container or to the hot plate by an adhesive (70), by a harness (44) or any other suitable retainer. The spacer (34, 66 or 66') is of closed peripheral configuration, for example, it may be an O-ring or gasket ring, so that heated air is trapped in an enclosed space(s) sealed between the container bottom and the hot plate. Hot spots which otherwise would result from direct contact of the container (24) with the hot plate (14) are thus avoided …
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 November 29, 1989 and granted February 2, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 29, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 29, 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.