Patents Represented by Attorney, Agent or Law Firm Marson Law, P.A.
  • Surface-treated metallic-oxide fine powder, and its production and use
    Patent number: 6573018
    Abstract: The tribo-electro static charge is stabilized by treating the surface of the metallic-oxide fine powders such as a silica powder, using the mixed solution which consists of a specific silane coupling agent containing primary amino group, other silane coupling agent containing amino group and the hydrophobic agent The powder such as silica has the small charge variation with time, and is suitable as the additive of the powder coatings or the electrophotographic toner.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: June 3, 2003
    Assignee: Nippon Aerosil Co., Ltd.
    Inventors: Naruyasu Ishibashi, Eiji Komai, Ralph M. Brandes