Patents by Inventor Keiichi Ueba

Keiichi Ueba 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).

  • Process for forming sheet products
    Patent number: 6468461
    Abstract: In a process and apparatus for producing long plastic sheets by pressing molten plastic materials between the forming roller and the forming drum unit, the forming drum unit including a thin cylindrical sleeve supported from inside by a drum support unit and pressed against the outer surface of the forming roller to deform elastically in a curve along the outer surface of the forming roller as it rotates, thus maintaining a relatively long contact length.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: October 22, 2002
    Assignee: Chiba Machine Industry Corporation
    Inventors: Koji Sumiyoshi, Keiichi Ueba
  • Apparatus for forming sheet products
    Patent number: 6077065
    Abstract: In a process and apparatus for producing long plastic sheets by pressing molten plastic materials between the forming roller and the forming drum unit, the forming drum unit comprising a thin cylindrical sleeve supported from inside by a drum support unit and pressed against the outer surface of the forming roller to deform elastically in a curve along the outer surface of the forming roller as it rotates, thus maintaining a relatively long contact length.
    Type: Grant
    Filed: February 24, 1998
    Date of Patent: June 20, 2000
    Assignee: Chiba Machine Industry Corporation
    Inventors: Koji Sumiyoshi, Keiichi Ueba