Heat sink apparatus
CA 2135894 A1 · Owner: Lee, Yong Nak · Inventors: Lee, Yong Nak
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved heat sink apparatus (23) that utilizes either natural or forced convection to transfer heat generated by a high temperature medium to a lower temperature medium or converts cold energy from a low temperature fluid or solid medium to a different or higher temperature stage or condition of energy. The apparatus includes a thermally conductive base plate (25) a plurality of, thick corrugated finned assembly components (14) constructed and arranged in abutting relationship and offset from each other so as to cause a circuitous path of fluid flow therethrough. The apparatus also may include the base plate and a plurality of thick sawtooth shaped, or segmented fins mounted thereon. …
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 March 29, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 29, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 29, 2016.
- 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.