Patents Assigned to Wada Seimitsu Shiken Kabushiki Kaisha
  • Patent number: 4738622
    Abstract: The specification discloses a removable denture retaining structure in which an elastic mounting member is provided between a denture body and a support base. This structure can obviate all problems of the prior art, i.e. many parts are required, skilled technique is also required to produce, mount and dismount the denture body, and looseness and breakage due to fatigue are apt to occur. Furthermore, the invention is advantageous because the structure can provide patients with comfortable feeling during use.
    Type: Grant
    Filed: July 24, 1986
    Date of Patent: April 19, 1988
    Assignees: Wada Seimitsu Shiken Kabushiki Kaisha, Nippon Maktron Kabushiki Kaish, Haruyuki Kawahara
    Inventors: Haruyuki Kawahara, Hiroki Wada, Takashi Tsutsumi, Ikuya Matsuo
  • Patent number: 4731020
    Abstract: The specification discloses a removable denture retaining structure in which an elastic mounting member is provided between a denture body and an support base.This structure can obviate all problems of the prior art, i.e. many parts are required, skilled technique is also required to produce, mount and dismount the denture body, and looseness and breakage due to fatigue are apt to occur.Furthermore, the invention is advantageous because the structure can provide patients with comfortable feeling during use.
    Type: Grant
    Filed: July 24, 1986
    Date of Patent: March 15, 1988
    Assignees: Wada Seimitsu Shiken Kabushiki Kaisha, Nippon Mektron Kabushiki Kaisha, Haruyuki Kawahara
    Inventors: Haruyuki Kawahara, Hiroki Wada, Takashi Tsutsumi, Ikuya Matsuo
  • Patent number: 4439153
    Abstract: This disclosure relates to a denture having a porous metal gauze as a denture plate formed of plural wire nets with a straight wire used as warps and wefts. The nets are laid one over another in layers in the manner that the meshes thereof are staggered each other with respect to the direction of thickness and the crossing portions of the warps and wefts in the same plane and the crossing portions of the warps and wefts in contact with each other in the direction of thickness are sintered to have a plurality of minute and complicatedly curved pores in the porous metal gauze. The denture permits penetration of saliva and food liquid through the thickness of the denture plate to supply oxygen and nutrient to the mucous membrane under the plate to thereby maintain physiological function and health of the membrane and to provide a sense of wearing the denture and a sense of bite occlusion in such a natural state as would hardly be brought about by a conventional denture.
    Type: Grant
    Filed: December 17, 1982
    Date of Patent: March 27, 1984
    Assignee: Wada Seimitsu Shiken Kabushiki Kaisha
    Inventors: Haruyuki Kawahara, Nobuhiro Ishizaki, Hiroki Wada