Patents by Inventor Sumio Kuriyama

Sumio Kuriyama has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4828420
    Abstract: Disclosed is an interdental tooth cleaning appliance for use in cleaning a space formed between adjacent teeth. In order to clean more effectively as compared with a known appliance, the cross-sectional shape of the bristles as seen in a plane perpendicular to the longitudinal axis of the brush is such as to provide three circumferentially spaced groups of bristles which are longer than the remaining bristles. The interdental tooth cleaning appliance of this invention is provided with a guide which makes it a more convenient one. It also has a device for injecting a liquid medicine.
    Type: Grant
    Filed: March 25, 1988
    Date of Patent: May 9, 1989
    Assignee: Nippon Shiken Kogyo Co., Ltd.
    Inventors: Masasuke Otsuka, Sumio Kuriyama, Hideyo Maniwa
  • Patent number: 4149533
    Abstract: In order to electrically apply fluoride by means of iontophoresis on a tooth an intermittent direct current is made to flow through the tooth. More particularly, the intermittent direct current has a waveform whose leading edge immediately rises to a peak and which decreases exponentially in time. As a result electrochemical polarization may be avoided and the ratio of the current conduction time to the repetition period may be increased so that the uptake efficiency of fluoride by the tooth may be considerably improved in a smooth manner without the need of impressing an excessive current on the tooth. Therefore adverse effects on nerve systems may be avoided, a patient under treatment feels no pain and no unpleasant stimulus, and the tooth's substance may be so improved as to be free from dental caries or decay.
    Type: Grant
    Filed: October 13, 1977
    Date of Patent: April 17, 1979
    Assignees: Matsushita Electric Industrial Co., Ltd., The Lion Dentifrice Co., Ltd.
    Inventors: Tatsuya Ishikawa, Sumio Kuriyama, Yoshinori Takaesu, Haruhisa Furuishi, Yoshio Okuzaki, Seiichi Motomura, Yoshinori Musha