Patents by Inventor Shafeek Razac

Shafeek Razac 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: 5409574
    Abstract: In accordance with the present invention, there is provided herein improved glass fiber dispersions for making uniform glass fiber mats by the wet-laid process. The well dispersed glass fiber compositions of this invention usually are prepared by mixing chopped glass fiber bundles in water with a small amount of a propoxylated fatty amine ethoxylate surfactant to disperse the bundles into individual fibers. As a feature of the invention, the dispersions may be formed at relatively high glass fiber consistencies. The resultant dispersions are characterized by low foaming and can be used to make very high quality glass fiber mats at high rates of production.
    Type: Grant
    Filed: February 10, 1994
    Date of Patent: April 25, 1995
    Assignee: Rhone-Poulenc Inc.
    Inventors: Shafeek Razac, Paul E. Eckler
  • Patent number: 5407536
    Abstract: In accordance with the present invention, there is provided herein improved glass fiber dispersions for making uniform glass fiber mats by the wet-laid process. The well dispersed glass fiber compositions of this invention usually are prepared by mixing chopped glass fiber bundles in water with a small amount of an alkylamidoalkyl sultaine surfactant to disperse the bundles into individual fibers. As a feature of the invention, the dispersions may be formed at relatively high glass fiber consistencies. The resultant dispersions then are used to make very high quality glass fiber mats at high rates of production.
    Type: Grant
    Filed: February 10, 1994
    Date of Patent: April 18, 1995
    Assignee: Rhone-Poulenc Inc.
    Inventors: Shafeek Razac, Manilal S. Dahanayake, James F. Griffin