Patents Assigned to Ricegrowers' Co-operative Mills, Ltd.
  • Rice hull ash filter
    Patent number: 4765545
    Abstract: A rice-hull-ash filter aid is produced by burning rice hulls to produce ash, grinding the ash to reduce its particle size, classifying the ground ash to remove oversized particles and collecting the remaining particles.
    Type: Grant
    Filed: March 17, 1986
    Date of Patent: August 23, 1988
    Assignee: Ricegrowers' Co-operative Mills, Ltd.
    Inventor: Hendricus A. Van Kruining