Patents by Inventor Shigetoshi Kashiwagi

Shigetoshi Kashiwagi 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).

  • Device and method for processing powder and granular material
    Patent number: 6513424
    Abstract: A pair of compression rollers 38a and 38b parallel with each other are provided and powder grains are supplied to a powder grain introduction/compression part 50 formed between the rollers 38a and 38b and, thereby, compression moldings of the powder grains are formed. A powder grain press/feed means 20 is provided in a front stage of the rollers 38a and 38b. The press/feed means 20 has a deaerating barrel 24 and previously presses the powder grains supplied between the rollers 38a and 38b. In side surfaces of the rollers 38a and 38b, side seals 37 are arranged with clearances 72 maintained from the rollers 38a and 38b. During pressing the powder moldings, the powder grains enter into the clearances so that closer layers are formed between the side surfaces of the compression rollers 38a and 38b and the side seals 37, thereby sealing the powder grain introduction/compression part 50.
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: February 4, 2003
    Assignee: Freund Industrial Co., Ltd.
    Inventors: Akira Iwasaki, Toshinari Sasaki, Shigetoshi Kashiwagi, Shigemi Isobe