Patents by Inventor Leon Leibovich

Leon Leibovich 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).

  • Methods and compositions for treating denim fabric and the fabric produced thereby
    Patent number: 5474577
    Abstract: A method of treating blue or black denim fabric to change its color, a composition used to create the color change, and the denim fabric produced thereby. The composition is applied to the denim fabric in a washing machine and comprises cellulase enzyme, a detergent, a salt, a buffer and dyestuffs. The fabric is either stonewashed before or during application of the composition. After the composition is applied, the resulting denim fabric is stonewashed in appearance and has a surface displaying two sets of light and dark areas of different shades of the same color.
    Type: Grant
    Filed: January 27, 1995
    Date of Patent: December 12, 1995
    Assignee: Central Trading Enterprises, Inc.
    Inventors: Paul Stoner, Sr., Paul Stoner, Jr., Thomas Pickard, Peter Margolin, Leon Leibovich