Patents by Inventor Thomas C. Kuechler

Thomas C. Kuechler 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).

  • Hypochlorite donor/bromide ion donor tablets which are stable in water
    Patent number: 5688515
    Abstract: Disclosed is a water stable tablet for disinfecting recirculating water systems comprising chlorinated isocyanurate, sodium bromide and a stabilizer which regulates the rate at the chlorinated isocyanurate and the sodium bromide are dissolved or dispersed in flowing water. The stabilizer may be an active chlorine stabilizer compound that is compatible with chlorinated isocyanurates in the solid state, capable of binding active halogen (chlorine or bromine in the +1 valence state), and less soluble when fully chlorinated than in the less than chlorinated state.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: November 18, 1997
    Assignee: Occidental Chemical Corporation
    Inventors: Thomas C. Kuechler, Lawrence F. Rakestraw
  • Biocidal methods and compositions for recirculating water systems
    Patent number: 5662940
    Abstract: Improved biocidal composition and method for controlling biofouling and microorganism population levels in recirculating water systems such as cooling towers, swimming pools or spas is disclosed and claimed. The composition comprises a hypochlorite donor and a bromide ion donor in proportions selected to maintain a mole ratio of the sum of all bromine containing species to the sum of all hypohalite species in the recirculating water of about 0.2 to about 20. The method comprises introducing into the recirculating water a mixture or combination of a hypochlorite donor and a bromide ion donor in an amount sufficient to maintain a ratio of the sum of all bromine containing species to the sum of all species in the recirculating water in the range of about 0.2 to about 20.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: September 2, 1997
    Assignee: University of Houston
    Inventors: Terry V. T. Hight, Jack V. Matson, Lawrence F. Rakestraw, Zhihe Zhang, Thomas C. Kuechler
  • Biocidal methods and compositions for recirculating water system
    Patent number: 5527547
    Abstract: Improved biocidal composition and method for controlling biofouling and microorganism population levels in recirculating water systems such as cooling towers, swimming pools or spas is disclosed and claimed. The composition comprises a hypochlorite donor and a bromide ion donor in proportions selected to maintain a mole ratio of the sum of all bromine containing species to the sum of all hypohalite species in the recirculating water of about 0.2 to about 20. The method comprises introducing into the recirculating water a mixture or combination of a hypochlorite donor and a bromide ion donor in an amount sufficient to maintain a ratio of the sum of all bromine containing species to the sum of all species in the recirculating water in the range of about 0.2 to about 20.
    Type: Grant
    Filed: April 4, 1995
    Date of Patent: June 18, 1996
    Assignee: The University of Houston
    Inventors: Terry V. T. Hight, Jack V. Matson, Lawrence F. Rakestraw, Zhihe Zhang, Thomas C. Kuechler
  • Biocidal methods and compositions for recirculating water systems
    Patent number: 5476670
    Abstract: Improved biocidal composition and method for controlling biofouling and microorganism population levels in recirculating water systems such as cooling towers, swimming pools or spas is disclosed and claimed. The composition comprises a hypochlorite donor and a bromide ion donor in proportions selected to maintain a mole ratio of the sum of all bromine containing species to the sum of all hypohalite species in the recirculating water of about 0.2 to about 20. The method comprises introducing into the recirculating water a mixture or combination of a hypochlorite donor and a bromide ion donor in an amount sufficient to maintain a ratio of the sum of all bromine containing species to the sum of all species in the recirculating water in the range of about 0.2 to about 20.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: December 19, 1995
    Assignee: The University of Houston
    Inventors: Terry V. T. Hight, Jack V. Matson, Lawrence F. Rakestraw, Zhihe Zhang, Thomas C. Kuechler
  • Biocidal methods and compositions for recirculating water systems
    Patent number: 5464636
    Abstract: Improved biocidal composition and method for controlling biofouling and microorganism population levels in recirculating water systems such as cooling towers, swimming pools or spas is disclosed and claimed. The composition comprises a hypochlorite donor and a bromide ion donor in proportions selected to maintain a mole ratio of the sum of all bromine containing species to the sum of all hypohalite species in the recirculating water of about 0.2 to about 20. The method comprises introducing into the recirculating water a mixture or combination of a hypochlorite donor and a bromide ion donor in an amount sufficient to maintain a ratio of the sum of all bromine containing species to the sum of all species in the recirculating water in the range of about 0.2 to about 20.
    Type: Grant
    Filed: March 14, 1994
    Date of Patent: November 7, 1995
    Assignee: The University of Houston
    Inventors: Terry V. T. Hight, Jack V. Matson, Lawrence F. Rakestraw, Zhihe Zhang, Thomas C. Kuechler
  • Process for oxidation and ammoxidation
    Patent number: 4521395
    Abstract: A process for the ammoxidation of methanol or formaldehyde to hydrogen cyanide or oxidation of methanol to formaldehyde using a catalyst comprising boron and phosphorus oxides, wherein the boron to phosphorus atomic ratio is 0.8:1 to 1.25:1.
    Type: Grant
    Filed: November 18, 1983
    Date of Patent: June 4, 1985
    Assignee: Monsanto Company
    Inventors: Thomas C. Kuechler, Jerry R. Ebner, Tao P. Li