Patents Assigned to Kodama Kagaku Kohyo K. K.
  • Vacuum forming apparatus
    Patent number: 4123215
    Abstract: A forming mold of double wall structure is provided which while having a reduced wall thickness, undergoes little or no deformation upon forming. A vacuum forming method employing the novel mold is also disclosed.
    Type: Grant
    Filed: June 28, 1976
    Date of Patent: October 31, 1978
    Assignee: Kodama Kagaku Kohyo K. K.
    Inventor: Tadahide Madenokoji