Patent Yard Sign in
Expired Canadian patentCanada

Method and apparatus for melting sulfur in aqueous slurries

CA 1260230 A · Owner: Ari Technologies, Inc. · Inventors: Nagl, Gary J.; Hardison, Leslie C.

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

9 -, ABSTRACT, "METHOD AND APPARATUS FOR MELTING SULFUR IN AQUEOUS SLURRIES", Method and apparatus for recovering sulfur from an aqueous slurry. The slurry is passed downwardly through a shell-and-tube heat exchanger having vertically arranged tubes, wherein it is heated sufficiently to melt the sulfur. The liquid mixture leaving the heat exchanger is discharged into a first separation zone in, which a phase separation between the lighter aqueous phase and the denser liquid sulfur occurs. The upper aqueous phase is then transported to an intermediate point in the height of a vertically elongated second separation zone, while the molten sulfur is transported from the lower end of the first …

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 September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 15, 1987
GrantedSeptember 26, 1989
Term endedSeptember 26, 2006
Patent numberCA 1260230 A
Classification (IPC)C01B17/02 +2 more

Timeline

Timeline From CIPO dates

1988199019921994199619982000200220042006Application filedMay 15, 1987Patent grantedSep 26, 1989Term endedSep 26, 2006

Sources & verification

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