Patents by Inventor Johannes H. Rek

Johannes H. Rek 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).

  • Liquid cleaning products
    Patent number: 5314636
    Abstract: A substantially non-aqueous liquid detergent composition is provided comprising a liquid phase and a particulate solid phase dispersed therein, said solid phase comprising from about 10% to about 60% by weight based on the total weight of the composition of substantially amorphous sodium metasilicate containing less than 6% by weight of water.
    Type: Grant
    Filed: November 16, 1992
    Date of Patent: May 24, 1994
    Assignee: Lever Industrial Company, Division of Indopco Inc.
    Inventors: Johannes H. Rek, Mark P. Houghton, Rudolf C. Verheul
  • Narrow range ethoxylate-based liquid nonionic surfactant blends
    Patent number: 5264147
    Abstract: The pourability of a substantially non-aqueous liquid detergent upon storage at low temperatures may be ascertained by incorporating into it a liquid nonionic surfactant blend essentially consisting of:(a) a narrow range linear chain alkyl ethoxylated alcohol containing an average of from about 5 to 7 ethylene oxide groups per molecule; and(b) an ethoxylated alcohol containing an average of from about 2 to 3 ethylene oxide groups per molecule, the weight ratio between (a) and (b) being in the range of from 9:1 to 1:9, whereby the average chain length ranges from 9 to 14 carbon atoms and the melting point of said blend is lower than 5.degree. C., preferably lower than 0.degree. C. This type of non-aqueous liquid detergent is particularly suitable for use in industrial washing machines.
    Type: Grant
    Filed: May 15, 1992
    Date of Patent: November 23, 1993
    Assignee: Unilever Patent Holdings B.V.
    Inventors: Mark P. Houghton, Johannes H. Rek, Arie de Weijer, Rudolf C. Verheul