Patents by Inventor Samuel C. Bright

Samuel C. Bright 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).

  • Bleaching compositions having quarternary ammonium activators
    Patent number: 4397757
    Abstract: In a hydrogen peroxide bleaching system it is known to use an activator which forms a peracid bleaching species; specific esters have been proposed previously as activators. The present invention defines esters having a substantive moeity which provides improved bleaching by giving peracid generation at or near the substrate surface.
    Type: Grant
    Filed: December 15, 1980
    Date of Patent: August 9, 1983
    Assignee: Lever Brothers Company
    Inventors: Samuel C. Bright, Dennis Postlethwaite