Patents by Inventor Michael Frederick Tompsett

Michael Frederick Tompsett 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).

  • Process for making a detergent particle
    Patent number: 6221430
    Abstract: There is provided a process for applying a coating to a base particle comprising a hygroscopic material, particularly sodium silicate, comprising the steps of (i) spraying an aqueous mixture comprising organic binder and optionally a dyestuff onto the base particle; and (ii) drying the particle to obtain a finished particle wherein the weight ratio of hygroscopic material to organic binder in the finished particle is from 1000:1 to 10:1, expressed on a dry weight basis. Detergent compositions containing the resulting particles are also provided.
    Type: Grant
    Filed: March 28, 1996
    Date of Patent: April 24, 2001
    Assignee: The Procter & Gamble Company
    Inventor: Michael Frederick Tompsett