Patents by Inventor Christiena Jannie Timmer

Christiena Jannie Timmer 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).

  • Mouth-care products
    Patent number: 5670138
    Abstract: The invention is directed to improved mouth care products comprising an amount of at least one copolymer of N-vinylpyrrolidone and acrylic acid, in a weight ratio of 60-95 to 40-5, suitable additives and carrier material.
    Type: Grant
    Filed: July 6, 1995
    Date of Patent: September 23, 1997
    Assignee: Sara Lee/DE N.V.
    Inventors: Franciscus Ties Venema, Christiena Jannie Timmer, Jolanda Douma, Stephanus Aloysius Gerardus Jochems