Patents by Inventor Per-.ANG.ke Johansson

Per-.ANG.ke Johansson 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).

  • Determination of gloss quality
    Patent number: 6147750
    Abstract: A method and apparatus for obtaining a basis on which the gloss quality of a sample surface of a sample, such as a paper sheet, can be determined by illuminating the sample surface and registering the intensity of the reflected light.
    Type: Grant
    Filed: October 26, 1998
    Date of Patent: November 14, 2000
    Assignee: STFI
    Inventors: Per-.ANG.ke Johansson, Mikael Lindstrand