Patents by Inventor Sophia Tsiantzi

Sophia Tsiantzi 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).

  • Bonding resins
    Patent number: 6579963
    Abstract: Phenol/aldehyde resins particularly phenol/formaldehyde resins are manufactured by replacing a proportion of the phenol content by a mixture of at least two different natural materials having a phenolic content. The resulting resins which can be used in bonding composite materials are at least as effective as the resin using only phenol and more satisfactory environmentally.
    Type: Grant
    Filed: June 6, 2001
    Date of Patent: June 17, 2003
    Assignee: Enigma N.V.
    Inventors: Efthalia Vergopoulou-Markessini, Sophia Tsiantzi