Patents by Inventor Shouhan Yanagi

Shouhan Yanagi 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 producing calcium phosphate powder
    Patent number: 6569396
    Abstract: The present invention provides a method of manufacturing calcium phosphate powder comprising the steps of preparing a mixed material by mixing calcium hydroxide (Ca(OH)2) powder and calcium hydrogenphosphate powder so that a molar ratio (Ca/P) of calcium to phosphor is set to a range of 1.45-1.72; conducting a mixing/milling treatment to the mixed material to cause a soft-mechanochemical compositing reaction thereby to prepare a calcium phosphate precursor; and conducting a heat treatment to thus obtained precursor at a temperature of 600° C. or more thereby to prepare calcium phosphate powder. According to the present invention, the manufacturing process is simple and the manufacturing cost can be remarkably reduced. In addition, fine calcium phosphate powder excellent in characteristics can be easily manufactured in a short time.
    Type: Grant
    Filed: November 27, 2000
    Date of Patent: May 27, 2003
    Assignee: Nara Machinery Co., Ltd.
    Inventors: Shouhan Yanagi, Mamoru Senna, Tetsuhiko Isobe, Manabu Kanayama