Patents by Inventor Arvi Hakanen

Arvi Hakanen 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).

  • Method and apparatus for the characterization and control of powder compaction
    Patent number: 5648610
    Abstract: A method and device for characterizing the compaction result of a powder and monitoring the compaction of the powder during the compaction process. In the method sound emission produced by the compaction process is measured by a sensor and transformed into a frequency spectrum in which the sound intensity is presented as a function of frequency. The intensity of the band relating to the sound emission arising from the compaction of the powder is recorded using different compressive forces, and the compaction result is obtained as a function of the intensity of the band relating to the sound emission arising from compaction.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: July 15, 1997
    Inventors: Ensio Laine, Harry Jalonen, Arvi Hakanen, Kari Linsaari, Juha Jokinen