Heat dissipator including coolant passage and method of fabricating the same
CA 2241402 C · Owner: Sumitomo Electric Industries, Ltd. · Inventors: Imai, Takahiro; Yamamoto, Yoshiyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A heat dissipator includes a heat-conductive substrate, a lid and a heat-conductive cover layer and a, coolant groove for passing coolant is formed on a major surface of the substrate. The lid is positioned on the coolant groove to seal the same, and the cover layer covers the major surface of substrate and the lid.
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 June 23, 1998 and granted December 2, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 23, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 23, 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.