Patents Assigned to Nichigo Shoji Co., Ltd.
  • Curing characteristics measuring apparatus and measuring method
    Patent number: 6523397
    Abstract: A curing characteristics measuring apparatus in which a sample chamber having a fixed surface and a rotation-vibrating drive surface is charged with a sample having a viscoelasticity, a torsional vibration is applied to the sample through the drive surface, a shearing stress generated in the sample is observed as a torque through the fixed surface or the drive surface, wherein mechanism is provided for reducing volume of the sample chamber following volume contraction generated in curing process of the sample.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: February 25, 2003
    Assignee: Nichigo Shoji Co., Ltd.
    Inventor: Chikao Tosaki