Patents Assigned to Precision Aquarium Testing Inc.
  • Nitrosomonas preservation and reactivation for aquaria
    Patent number: 5314542
    Abstract: A culture of Nitrosomonas packaged in a manner to induce a metabolic state of dormancy under conditions favorable for survival of up to at least one year at room temperature: with a method for its rapid reactivation to complete metabolic activity within about 72 hours: for its subsequent addition into aquaria to immediately begin the oxidation and prevention of harmful ammonia accumulation.
    Type: Grant
    Filed: August 6, 1993
    Date of Patent: May 24, 1994
    Assignee: Precision Aquarium Testing, Inc.
    Inventors: Edward J. Cassidy, Ronald D. Jones
  • Phosphate removal from aquaria using immobilized ferric hydroxide
    Patent number: 5124044
    Abstract: Immobilized ferric hydroxide selectively removes phosphate from aquarium water. The material provides a healthier environment and retards growth of undesirable algae and bacteria.
    Type: Grant
    Filed: January 9, 1991
    Date of Patent: June 23, 1992
    Assignee: Precision Aquarium Testing Inc.
    Inventors: Edward J. Cassidy, Ronald D. Jones