Patents Assigned to Pacific Rare Specialty Metals & Chemicals, Inc.
  • Process for the recovery of selenium from minerals and/or acidic solutions
    Patent number: 8361431
    Abstract: A process and method for recovering elemental selenium, selenite or selenate from minerals and selenium salts solutions using a reducing sugar to reduce selenium before precipitating the elemental selenium, selenite and/or the selenate.
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: January 29, 2013
    Assignee: Pacific Rare Specialty Metals & Chemicals, Inc.
    Inventors: Robert John Hisshion, Rosauro C. Manalo
  • Process for the recovery of tellurium from minerals and/or acidic solutions
    Patent number: 8268285
    Abstract: A process and method for recovering elemental tellurium from minerals and acidic solutions using a reducing sugar as the reducing agent in order to reduce and precipitate tellurium as tellurium dioxide (TeO2) from which elemental tellurium may be recovered.
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: September 18, 2012
    Assignee: Pacific Rare Specialty Metals and Chemicals, Inc.
    Inventors: Robert John Hisshion, Crispinne C. Patiño
  • Process for the recovery of selenium from minerals and/or acidic solutions
    Patent number: 8092776
    Abstract: A process and method for recovering elemental selenium, selenite or selenate from minerals and selenium salts solutions using a reducing sugar to reduce selenium before precipitating the elemental selenium, selenite and/or the selenate.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: January 10, 2012
    Assignee: Pacific Rare Specialty Metals and Chemicals, Inc.
    Inventors: Robert John Hisshion, Rosauro C. Manalo