Patents by Inventor Loui H. T. Tai

Loui H. T. Tai 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).

  • Suds control agents and detergent compositions containing them
    Patent number: 4451387
    Abstract: Suds control agents for addition to detergent compositions are prepared by a granulation process. In the process core particles of gelatinised starch are granulated with a silicone oil admixed with hydrophobic silica. The granules are then coated with wax by spraying from a solution in an organic solvent. Typically the granules produced contain 45-55%, silicone oil compound 35-50% and wax 7-15% gelatinized starch.
    Type: Grant
    Filed: August 19, 1982
    Date of Patent: May 29, 1984
    Assignee: Lever Brothers Company
    Inventor: Loui H. T. Tai
  • Suds suppressing granules for use in detergent compositions
    Patent number: 4447349
    Abstract: Silicone-containing microgranules are formed by a coating process using a substantially spherical or cylindrical core material such as a sucrose bead, or an enzyme-containing prill or marume. In a preferred process the core is impregnated with an absorbent such as titanium dioxide, the absorbent is impregnated with a mixture of silicone oil and hydrophobic silica and the coated granule is then coated with wax. The granules are used in detergent compositions.
    Type: Grant
    Filed: September 13, 1982
    Date of Patent: May 8, 1984
    Assignee: Lever Brothers Company
    Inventor: Louis H. T. Tai