Patents Assigned to Nitivy Company Limited
  • Polyvinyl alcohol fiber containing tourmaline particles
    Patent number: 5928784
    Abstract: Proposed is an electret fiber which is an insolubilized polyvinyl alcohol fiber containing 0.05 to 0.5% by weight of tourmaline particles having a particle diameter not exceeding 0.3 .mu.m. The electret fiber is effective for invigoration of human body by promoting blood circulation and also effective for decreasing the BOD value of sewage water by activating the bacteria in the activated sludge. The electret fiber is prepared by spinning a spinning solution of the polyvinyl alcohol containing the tourmaline particles into the form of a fiber which is then subjected to an insolubilization treatment by a heat treatment, formalization with formaldehyde or acetalization with glutaraldehyde.
    Type: Grant
    Filed: April 24, 1997
    Date of Patent: July 27, 1999
    Assignees: Life Energy Industry Inc., Nitivy Company Limited, Fuji Lace Sangyo Co., Ltd.
    Inventors: Toshio Sugihara, Siro Nakamura, Marcos Masaki Komiya, Tadayoshi Utsumi, Ichiro Nagashima
  • Antibacterial fiber, textile and water-treating element using the fiber and method of producing the same
    Patent number: 5496860
    Abstract: An antibacterial fiber includes an ion exchange fiber and an antibacterial metal ion entrapped within the ion exchange fiber through an ion exchange reaction. The invention also discloses antibacterial textiles and water-treating element using the fibers.
    Type: Grant
    Filed: December 28, 1993
    Date of Patent: March 5, 1996
    Assignees: Suntory Limited, Takuma Co., Ltd., Nitivy Company Limited
    Inventors: Nobuya Matsumoto, Shinichi Kunisaki, Goro Fujiwara, Mitsunobu Masuda, Hiroshi Horie, Asaichi Kawanaka