Patents by Inventor Jack J. Ito

Jack J. Ito 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).

  • Dry magnetic pressure-fixable developing powder
    Patent number: 4262077
    Abstract: A flowable, pressure-fixable, magnetic, dry toner powder comprising from about 25 to about 70 percent by weight of a binder material, said binder material comprising a mixture of a polystyrene and a polyolefin/vinyl acetate copolymer, from about 30 to about 75 percent by weight of a magnetically permeable material, and from about 0.5 to about 2.0 percent by weight of conductive carbon.
    Type: Grant
    Filed: June 25, 1979
    Date of Patent: April 14, 1981
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Jack J. Ito