Patents by Inventor Hien T. Pham

Hien T. Pham 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).

  • Bleach compositions and process for making same
    Patent number: 4917811
    Abstract: Dry, granular bleach compositions comprising an organic peroxycarboxylic acid as the active bleaching agent are obtained by cogranulating the acid with a strongly alkaline, hydratable inorganic or organic salt.These cogranulates show a reduced tendency to decompose or detonate. A typical cogranulate is made from diperoxydodecanedioic acid and dibasic sodium orthophosphate with seven moles of water of hydration.The cogranulates are useful as bleach ingredients in detergent and cleaning compositions.
    Type: Grant
    Filed: January 3, 1989
    Date of Patent: April 17, 1990
    Assignee: Lever Brothers Company
    Inventors: Jeffrey N. Foster, William M. Karpusiewicz, Charles F. Irwin, Hien T. Pham, Michael P. Aronson