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Expired Canadian patentCanada

In-tube condensation process

CA 1197209 A · Owner: The Secretary Of State For Trade And Industry In Her Britannic Majesty'S Government Of The United Kingdom Of Great Britain And Northern Ireland · Inventors: Henry, John A.R.

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

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Abstract From the Canadian patent

Title: In-Tube Condensation Process A heat exchange process of the kind in which a condensing vapour flows in parallel paths through a bundle of tubes (1) while coolant fluid flows over the exterior of the tubes. Each tube is provided with a flow restrictor (4) at its outlet the, degree of flow restriction being such in relation to the fluid mass flow rate, that the restrictors are maintained full of condensate (5) across their entire cross-section. A reverse flow of vapour via the outlet manifold (3) into the outlets of certain tubes is thus prevented by the presence of condensate filling the restrictors and thermal inefficiency resulting from consequent occlusion by non-condensing gas of …

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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 November 26, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 26, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 16, 1984
GrantedNovember 26, 1985
Term endedNovember 26, 2002
Patent numberCA 1197209 A
Classification (IPC)B01D5/00 +2 more

Timeline

Timeline From CIPO dates

198519871989199119931995199719992001Application filedMarch 16, 1984Patent grantedNov 26, 1985Term endedNov 26, 2002

Sources & verification

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