Reboiler
CA 1321161 C · Owner: Houghton, Fred · Inventors: Houghton, Fred; Holmes, Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A reboiler comprising a rectifying section and an evaporating section in which the evaporating section comprises a plurality of upright evaporator tubes connected at their upper ends to a tube sheet means for, supplying liquid to the evaporator tubes and means for heating the surface of evaporator tubes the lower ends of, the evaporator tubes being sealed and each evaporator tube being provided with a concentrically positioned inner tube extending from the upper end of each evaporator tube to a position above the sealed end of each evaporator tube.
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
- Granted August 10, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 10, 2010.
- 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.