Patents by Inventor Alwyn Nartey

Alwyn Nartey 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).

  • Patent number: 6040288
    Abstract: Provided are methods of washing fabric articles in the presence of silicone oils to provide for color protection and/or fragrance retention in the washing of fabric articles with detergents. Fabric articles are washed in a washing medium comprised of a major amount by weight of water, a first minor amount by weight of a detergent and a second minor amount by weight of an aminosilicone having the formula: ##STR1## wherein: the variables are defined in the specification wherein said first minor amount by weight is greater than said second minor amount by weight. In preferred embodiments of this method, said washing medium is the product of mixing water with a composition comprised of said aminosilicone compound in association with an insoluble support. In particularly preferred embodiments, an aminosilicone compound wherein R.sup.1 and R.sup.8 are both alkoxy, (typically methoxy) is employed.
    Type: Grant
    Filed: February 20, 1998
    Date of Patent: March 21, 2000
    Assignee: Rhodia Inc.
    Inventors: Christine Popoff, Alwyn Nartey, Robert Gabriel, Eric Aubay
  • Patent number: 5843317
    Abstract: Improved surfactant recovery upon ultrafiltration of a surfactant-containing aqueous solution can be obtained using a system comprising anionic surfactants.
    Type: Grant
    Filed: February 26, 1997
    Date of Patent: December 1, 1998
    Assignee: Rhodia Inc.
    Inventors: Manilal S. Dahanayake, Mark E. Ventura, Alwyn Nartey