Patents by Inventor Gerald V. Colombo

Gerald V. Colombo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5624567
    Abstract: The present process is designed for removing elemental iodine and iodide ions from an aqueous solution containing iodine and iodide ions. This process employees a strong-base anion exchange resin. The resin comprises trialkyl amine groups each preferably comprising from alkyl groups containing 3 to 8 carbon atoms. The aqueous solution containing elemental iodine and iodide ions is passed through the resin and thereby treats the aqueous solution by removing elemental iodine and iodide ions therefrom. The volume of the aqueous solution passing through the resin until reaching the Breakthrough Point is at least about 8 liters per cubic centimeter.
    Type: Grant
    Filed: February 12, 1996
    Date of Patent: April 29, 1997
    Assignee: Umpqua Research Company
    Inventor: Gerald V. Colombo
  • Patent number: 5176836
    Abstract: A method and apparatus are disclosed for maintaining continuous, long-term microbial control in the water supply for potable, hygiene, and experimental water for space activities, i.e., space shuttle, orbiter lab, Lunar base, Mars base, deep space missions, etc., as well as treatment of water supplies on earth. The water purification is accomplished by introduction of molecular iodine into the water supply to impart a desired iodine residual. The water is passed through an iodinated anion exchange resin bed. The iodine is bound as I.sup.-.sub.n at the anion exchange sites and releases I.sub.2 into the water stream flowing through the bed. Suitable anion exchange resins are Amberlite IRA 401S (Rohm & Haas); Dowex SBR (Dow Chemical); and Ionac ASB-1P (Sybron Corp.). The concentration of I.sub.2 in the flowing water gradually decreases and the ion-exchange bed has had to be replaced.
    Type: Grant
    Filed: March 18, 1991
    Date of Patent: January 5, 1993
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Richard L. Sauer, Gerald V. Colombo, Clifford D. Jolly