Patents by Inventor Richard M. Twemlow

Richard M. Twemlow 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).

  • Detergent bars
    Patent number: 4666624
    Abstract: The presence of iron in a detergent bar originating from sheet aluminosilicates, e.g. kaolins, may lead to color and odor degradation. However sheet alumino-silicates containing a relatively high amount of total iron are suitable for inclusion provided their free iron content is not more than 50 ppm.
    Type: Grant
    Filed: November 13, 1985
    Date of Patent: May 19, 1987
    Assignee: Lever Brothers Company
    Inventors: Geoffrey Irlam, Michael R. Lowry, Richard M. Twemlow