Patents by Inventor Sadayasu Ota

Sadayasu Ota 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).

  • Contra angle handpiece for dental treatment by laser beams
    Patent number: 4503853
    Abstract: A contra angle handpiece of this invention employs a laser beam transmitting glass fiber for dental treatment in such a manner that the transmission of the beam is carried out not by a reflecting mirror, but by a glass fiber centripetally held with respect to the handpiece by means of resilient grip members. As a result, the disadvantages of the prior art such as reflection factor reduction and reflection angle changes, which result from the use of a reflecting mirror in a contra angle dental handpiece, are eliminated.
    Type: Grant
    Filed: August 31, 1982
    Date of Patent: March 12, 1985
    Assignee: Kabushiki Kaisha Morita Seisakusho
    Inventors: Sadayasu Ota, Shinichi Nishimoto
  • Cordless handpiece for dental treatment
    Patent number: 4355977
    Abstract: The disclosure relates to improvements in a cordless handpiece for dental treatment having storage batteries and an electric motor incorporated therein. The improvements are that the cutting tool is increased in cutting performance and that the replacement of a contra angle and a straight tool has been facilitated.
    Type: Grant
    Filed: September 30, 1980
    Date of Patent: October 26, 1982
    Assignee: Kabushiki Kaisha Morita Seisakusho
    Inventors: Sadayasu Ota, Takeo Uchiya
  • Working mechanism for a treatment table
    Patent number: 4159822
    Abstract: A working mechanism for moving a treatment table including an expandable and contractable pneumatic spring coupled to the table, a pneumatic control pressure circuit for controlling the expansion and contraction of the pneumatic spring and a hydraulic checker coupled to the treatment table whereby the treatment table is smoothly moved and maintained at any heighth.
    Type: Grant
    Filed: February 27, 1978
    Date of Patent: July 3, 1979
    Assignee: Kabushiki Kaisha Morita Seisakusho
    Inventors: Sadayasu Ota, Keizo Inoue
  • Assembly for taking a continuous X-ray picture of the dental arch
    Patent number: 4002915
    Abstract: The disclosure relates to improvements in an assembly for taking a continuous X-ray picture of the dental arch of a human being, wherein a support base is supported by a wall construction so as to be either vertically slidable or fixed in position, thereby utilizing space much more effectively and improving the appearance of the assembly, and eliminating for an operator or a patient any problem regarding movement of the feet on taking the X-ray picture.
    Type: Grant
    Filed: December 9, 1974
    Date of Patent: January 11, 1977
    Assignee: Kabushiki Kaisha Morita Seisakusho
    Inventors: Charles M. Weiss, Sadayasu Ota
  • Dental chair
    Patent number: D255622
    Type: Grant
    Filed: December 7, 1977
    Date of Patent: July 1, 1980
    Assignee: Kabushiki Kaisha Morita Seisakusho
    Inventor: Sadayasu Ota