Once-through evaporator for a steam generator
CA 2501086 A1 · Owner: Nooter/Eriksen, Inc. · Inventors: Schroeder, Joseph E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A steam generator (A) has a once-through evaporator (14) which converts liquid water into steam in tubes (30) over which hot gases flow. Each tube contains a metal tape (40) which is twisted into a helical configuration to induce turbulence in the mist produced by the boiling and the turbulence insures , that the mist wets the inside surfaces of the tubes thus producing good heat , transfer and moderate temperatures in the tubes.
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 October 2, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 2, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 2, 2025.
- 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.