Patents Assigned to Filtrol Corporation
  • Patent number: 3962135
    Abstract: A mechanically strong, thermally stable porous siliceous pellet having a high pore volume and surface area with a major portion of the pore volume in pores of radii more than 20 Angstroms and the process of producing the pellets by shaping a clay, acid-leached to a degree insufficient to destroy the plasticity of the clay, forming the leached clay into shaped particles, calcining the particles and further extracting the calcined clay pellets without impairing their shape.
    Type: Grant
    Filed: December 26, 1973
    Date of Patent: June 8, 1976
    Assignee: Filtrol Corporation
    Inventor: Hamid Abdel Alafandi