Patents by Inventor Raymond Wei Chen

Raymond Wei Chen 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).

  • Leave-on antimicrobial compositions which provide improved immediate germ reduction
    Patent number: 6217887
    Abstract: The present invention relates to a leave-on antimicrobial composition comprising from about 0.001% to about 5% of an antimicrobial active; from about 0.5% to about 10% of an anionic surfactant; from about 0.1% to about 10% of a proton donating agent, wherein the proton donating agent is such that the composition is essentially free of C4-C20 alkyl fatty acid; and from about 0% to about 98.85% of water; wherein the composition is adjusted to a pH of from about 3.0 to about 6.0; wherein the leave-on antimicrobial composition has a One-wash Immediate Germ Reduction Index of greater than about 50%; and wherein the leave-on antimicrobial composition has a Mildness Index of greater than 0.3. The invention also encompasses methods for moisturizing skin, reducing germs on the skin, and providing residual effectiveness versus Gram positive bacteria using these products.
    Type: Grant
    Filed: June 1, 1999
    Date of Patent: April 17, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Peter William Beerse, Jeffrey Michael Morgan, Kathleen Grieshop Baier, Theresa Anne Bakken Schuette, Raymond Wei Chen