Patents by Inventor Toshikazu Muramatsu

Toshikazu Muramatsu 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).

  • Toner for developing electrostatic latent images
    Patent number: 5272040
    Abstract: The present invention relates to a toner for developing electrostatic latent images which has silica and titania or alumina on the toner surface at specified ratio or in specified states, so that environmental stability in chargeability and stable copy images with fine texture can be obtained.
    Type: Grant
    Filed: March 27, 1992
    Date of Patent: December 21, 1993
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Shinobu Nakasawa, Hiroshi Fukao, Keiji Asakawa, Toshikazu Muramatsu, Ichiro Demizu