Patents by Inventor Svenn E. Larssen

Svenn E. 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).

  • Method of making carrier for use in electrophotographic developers
    Patent number: 4751164
    Abstract: A novel carrier material useful in conjunction with a toner for preparing a two-component developer for electrophotographic processes is provided. The carrier comprises a spherical magnetite particulate material having a reduced metallic iron outer layer which is coated with an outermost resinous layer for conditioning the copying properties of the carrier.
    Type: Grant
    Filed: May 13, 1987
    Date of Patent: June 14, 1988
    Assignees: Kanto Denka Kogyo Co., Ltd., Hoganas AB
    Inventors: Mitsuhiro Katayama, Kenkichi Hara, Kazuyoshi Oka, Ulf Engstrom, Svenn E. Larssen