Patents Assigned to Canbro INC
  • Method for the production of metallic flake pigments
    Patent number: 6464769
    Abstract: A method of manufacturing metallic, especially aluminum flake pigments comprises comminuting metallic flake particles in an inert solvent such as mineral spirit and in-line screening of the slurry thus formed in at least two in-line cylindrical rotary screens with different mesh size. The screening system is fully enclosed to avoid solvent emissions. The finished product has consistent flake particle size distribution with brighter metallic finishes than conventionally produced products.
    Type: Grant
    Filed: April 3, 2001
    Date of Patent: October 15, 2002
    Assignees: US Aluminum Inc., Shamrock Aluminium Limited, Canbro INC
    Inventors: Arun Kumar Chattopadhyay, Talal Soufanati, Michel Moffatt, Thomas Aquinas Barry, Samir Sanyal
  • Residue wax coated nitrate salt
    Patent number: 5976283
    Abstract: Solvent is extracted by distillation from a residue filtrate generated in producing aluminium paste by filtering a slurry of aluminium particles, at least one fatty acid and a solvent. The distillation produces a residue wax. The wax is used to form a coating composition for coating onto prills of ammonium nitrate to provide at least a part substitute or replacement for conventional fuel oil coatings, especially for use in commercial explosives.
    Type: Grant
    Filed: October 29, 1997
    Date of Patent: November 2, 1999
    Assignee: Canbro Inc.
    Inventors: Barton White, Kenneth Clive Ramsey