Patents by Inventor Atsumu Miyahara

Atsumu Miyahara 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).

  • Method for inspecting the root canal with a radiopaque impression material
    Patent number: 5106301
    Abstract: A method for inspecting the root canal comprising using a room temperature-setting, rubbery and elastic impression material, typically a silicon impression material and 20.0 to 75.0% by weight of a radiopaque substance contained therein, which shows a solubility of 0.2 grams and less per 100 ml of water of 20.degree. C. and is in the form of finely divided powders having a mean particle size of 5.times.10.sup.-3 .about.10 micrometers.
    Type: Grant
    Filed: July 11, 1991
    Date of Patent: April 21, 1992
    Assignee: G-C Dental Industrial Corp.
    Inventors: Atsumu Miyahara, Hachiro Sasaki, Shunichi Futami