Patents by Inventor Esa Virtanen

Esa Virtanen 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).

  • Electrically conductive compositions and methods for their preparation
    Patent number: 5340499
    Abstract: Compositions and methods are described that relate to the use of reaction products of metal compounds and protonic acids for plasticizing and neutralizing acidic, protonated compositions comprising substituted and unsubstituted polyanilines and co-polymers and or mixtures thereof; and for reducing the percolation threshold for conductivity in blends with insulating bulk polymers.
    Type: Grant
    Filed: August 11, 1992
    Date of Patent: August 23, 1994
    Assignee: Neste Oy
    Inventors: Toivo Karna, Jukka Laakso, Timo Niemi, Heikki Ruohonen, Esko Savolainen, Helge Lindstrom, Esa Virtanen, Olli Ikkala, Alejandro Andreatta