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Expired Canadian patentCanada

Agglomeration of titania

CA 2558248 C · Owner: Dippenaar, Benjamin Alexander · Inventors: Bessinger, Deon; Dippenaar, Benjamin Alexander; Botha, Pieter Adriaan

CIPO record

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Abstract From the Canadian patent

According to the present invention there is provided a process for the agglomeration of titania slag particles comprising providing titania slag at a d50 particle size of below 106 ~m; mixing the slag particles with an organic binder; and agglomerating the mixture of the slag particles and organic binder into agglomerated particles with a d50 particle size in the range from 106 ~m to 1000 ~m. The agglomerated particles have a (TiO2 and FeO)/C mass ratio of more than 3.4. The invention also relates to such agglomated slag particles and a chloride process for the production of TiO2 wherein such agglomerated titania slag particles are used.

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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

  • Filed September 14, 2005 and granted September 10, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 14, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • 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 14, 2005
GrantedSeptember 10, 2013
Term endedSeptember 14, 2025
Patent numberCA 2558248 C
Classification (IPC)C22B1/24 +1 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedSep 14, 2005Patent grantedSep 10, 2013Term endedSep 14, 2025

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