Patents Assigned to Zenmi Co., Ltd.
  • Sanitary napkin
    Patent number: 4333464
    Abstract: Sanitary napkin comprising at least a layer consisting of a water-absorbing substance containing a powdery polymer which is soluble in water or is dispersible in water and is highly water-absorbable and at least a film based on polyvinyl alcohol, which is soluble in water or is dispersible in water is disclosed, the napkin being excellent in absorbing and holding the menstrural blood, in preventing the exudation and the leakage of the menstrural blood once absorbed therein and in disintegrating in water.
    Type: Grant
    Filed: April 11, 1980
    Date of Patent: June 8, 1982
    Assignee: Zenmi Co., Ltd.
    Inventor: Tadao Nakano