Heat exchanger
CA 2069783 C · Owner: Tokutake, Toshinori · Inventors: Tokutake, Toshinori
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A heat exchanger comprises a main body and at least one header-held members, with the main body having a plurality of heat exchanging tubes whose both ends are connected to headers in fluid communication with them wherein, the header-held members are selected from a group consisting of a bracket and an external pipe-connecting member which are attached to the header. The header-held members each comprise a header-surrounding portion which is fitted sideways on and then brazed to the header while remaining selfretained on it, whereby the header-held member can be easily and rigidly secured to the header.
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 May 28, 1992 and granted October 7, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 28, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 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.