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Expired Canadian patentCanada

Liquid cooling system for integrated circuits

CA 1303249 C · Owner: Burroughs Corporation · Inventors: Tustaniwskj, Jerry Ihor; Halkola, Kyle George

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A leak tolerant cooling system for cooling electrical components with a liquid comprises: a frame 10 holding a plurality of printed circuit boards 11 each of, which have electrical components attached thereto; a top reservoir 14, mounted on the frame 10 above the boards for holding the liquid at atmospheric pressure; a conduit (17a-17g) coupled to the top reservoir and the boards for, conveying the liquid in a downward direction from the top reservoir over the components, the conduit being airtight in the absence of a leak therein; a bottom reservoir 15 coupled to the conduit below the boards for receiving the, liquid plus any air due to leaks from the conduit the, bottom reservoir being …

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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

  • Granted June 9, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 16, 1987
GrantedJune 9, 1992
Term endedJune 9, 2009
Patent numberCA 1303249 C
Classification (IPC)H01L23/34

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedOct 16, 1987Patent grantedJune 9, 1992Term endedJune 9, 2009

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.