Patents by Inventor John K. Potter

John K. Potter 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).

  • Manufacture of silica gels using shear to reduce the particle size prior to washing with a hydrocyclone
    Patent number: 5215733
    Abstract: Amorphous silica prepared by the gel route requires washing to remove electrolyte. The gel is formed into small particles by shearing and then washed while being transported by water through stages which separate larger size material. The washing is more rapid than conventional methods and allows the ageing steps to be decoupled from the wash stage.
    Type: Grant
    Filed: January 18, 1991
    Date of Patent: June 1, 1993
    Assignee: Unilever Patent Holdings B.V.
    Inventor: John K. Potter
  • Adjuncts for use in the manufacture of detergent powders
    Patent number: 4436644
    Abstract: A process for producing absorbent granules from sodium tripolyphosphate or disodium hydrogen orthophosphate by simultaneously granulating and hydrating the salts to full hydration. The process produces granules which have good absorbency without the need for a drying step. The granules can be used for absorbing liquid nonionic surfactant or other liquid components of detergent powders such as perfumes.
    Type: Grant
    Filed: January 11, 1982
    Date of Patent: March 13, 1984
    Assignee: Lever Brothers Company
    Inventors: Richard S. Johnson, John K. Potter
  • Detergent compositions and processes for manufacturing them
    Patent number: 4328114
    Abstract: A process for producing absorbent granules from sodium tripolyphosphate or disodium hydrogen orthophosphate by simultaneously granulating and hydrating the salts to full hydration. The process produces granules which have good absorbency without the need for a drying step. The granules can be used for absorbing liquid nonionic surfactant or other liquid components of detergent powders such as perfumes.
    Type: Grant
    Filed: October 27, 1980
    Date of Patent: May 4, 1982
    Assignee: Lever Brothers Company
    Inventors: Richard S. Johnson, John K. Potter