Patents by Inventor Masako Shirasuka

Masako Shirasuka 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).

  • Orthodontic device
    Patent number: 6033217
    Abstract: An orthodontic appliance comprises a band to be set around one tooth of lateral teeth, an outer cylinder fixed to the band, an inner cylinder formed longer than the outer cylinder and supported slidably within the outer cylinder, a wire fixed to each tooth of anterior teeth via a bracket and extended toward the lateral teeth, and inserted through the inner cylinder, and biasing means attached between the outer cylinder and the bracket and serving for biasing the anterior teeth toward the lateral teeth, in which arrangement the inner cylinder is fixed at an open end portion to the wire.
    Type: Grant
    Filed: January 14, 1999
    Date of Patent: March 7, 2000
    Assignee: Shofu Inc.
    Inventor: Masako Shirasuka