Patents by Inventor Svenn-Erik Larssen

Svenn-Erik Larssen 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).

  • Carrier for use in electrophotographic developers
    Patent number: 4663262
    Abstract: A noval carrier powder for electrophotographic developers is provided. The carrier powder comprises spherical magnetite particles having a wustite (FeO) content of less than 10% by weight, a particle diameter of 30-200 .mu.m and a surface porosity of less than 20%.
    Type: Grant
    Filed: December 26, 1985
    Date of Patent: May 5, 1987
    Assignees: Kanto Denka Kogyo Co., Ltd., Hoganas AB
    Inventors: Kazuyoshi Oka, Mitsuhiro Katayama, Toshihiko Kohno, Ulf Engstrom, Svenn-Erik Larssen