Patents by Inventor Gunnar M. T. Soderqvist

Gunnar M. T. Soderqvist 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 for the production of mineral fibers with unitary fiber length characteristics
    Patent number: 4234329
    Abstract: A sample of mineral fibers is dispersed in a liquid and viscosity of the dispersion is measured. The viscosity value provides a rapid measure of the length of the fibers. The measurement is sufficiently rapid that adjustments can be made to operating conditions during a production run to ensure the production of fibers of uniform length characteristics.
    Type: Grant
    Filed: March 1, 1979
    Date of Patent: November 18, 1980
    Assignee: Rockwool Aktiebolaget
    Inventors: Gunnar M. T. Soderqvist, Ulf L. Aberg