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Expired Canadian patentCanada

Process for the granulating of sulphur and a sulphur granulator

CA 1314671 C · Owner: Garcia, Roberto · Inventors: Da Silva, Jose Horta; Garcia, Roberto

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

Sulphur is obtained to the desired granulation and at the same time cooled by means of a directed hollow cylindrical jet of melted sulphur on, either side of which, i.e. both inside and outside the cylinder of molten sulphur, there are jets of cold water, the three jets directed onto a disk which disk is able to turn freely. The jets of water and sulphur strike the disk between the middle of the disk and its outer edge and make it turn while at the same time the sulphur hardens into granules. The turning spins the granules off the disk. The fact that there are two jets of water leads to a better particle size of the sulphur and because there is a better, contact between the water and the …

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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 March 23, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 23, 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.
FiledSeptember 11, 1987
GrantedMarch 23, 1993
Term endedMarch 23, 2010
Patent numberCA 1314671 C
Classification (IPC)B22D11/01 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedSep 11, 1987Patent grantedMarch 23, 1993Term endedMarch 23, 2010

Sources & verification

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