Patents by Inventor Tapio Makelä

Tapio Makelä 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).

  • Temperature detector/indicator
    Patent number: 7719404
    Abstract: The invention relates to an electrical and/or optical temperature detector/indicator based on conductive polymers, said detector/indicator being suitably used in such packages for products, the temperature changes of which need to be monitored.
    Type: Grant
    Filed: February 26, 2004
    Date of Patent: May 18, 2010
    Assignee: Avantone Oy
    Inventors: Tapio Makelä, Harri Kosonen