Patents by Inventor Hiroichi Takenaka

Hiroichi Takenaka 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).

  • Surface treatment process for imparting hydrophilic properties to aluminum articles
    Patent number: 4462842
    Abstract: An aluminum evaporator including a refrigerant tube and fins with a hydrophilic surface is prepared by forming a chemical coating over the surface of its components as assembled into a product or before fabrication, and thereafter forming a hydrophilic layer over the coating by treating the resulting components with a solution of silicic acid, silicate or colloidal silica.
    Type: Grant
    Filed: January 5, 1982
    Date of Patent: July 31, 1984
    Assignee: Showa Aluminum Corporation
    Inventors: Toshimitsu Uchiyama, Eizo Isoyama, Hiroichi Takenaka, Masayuki Kaji