Patents by Inventor Dupuis Dominique

Dupuis Dominique 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).

  • Composite particles containing an active substance
    Patent number: 6685966
    Abstract: Composite particles are provided comprising at least one core including at least one organic polymer in which is dispersed at least one hydrophobic active material. The hydrophobic active material is a cosmetic, pharmaceutical, food or plant-protection material. The composite particles also include one external coating including at least one oxide and/or hydroxide of aluminum, of silicon, of zirconium and/or of a transition metal and one intermediate layer, present at least partially between the core and the external coating and including at least one alkaline earth metal hydroxide.
    Type: Grant
    Filed: September 27, 2000
    Date of Patent: February 3, 2004
    Assignee: Rhodia Chimie
    Inventors: Dupuis Dominique, Reeb Roland