Patents by Inventor Yozaburo Osawa

Yozaburo Osawa 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).

  • Collapsible material, placement rack, incineration method, lost-wax mold, and mold collapsing method
    Patent number: 8250994
    Abstract: A collapsible material is provided which maintains a predetermined strength and shape until it is heated and increased in temperature to a desired temperature and then can collapse, after a lapse of a predetermined time. The collapsible material of the present invention is characterized by comprising a base formed of a hydrate of a hydraulic material and unexpanded vermiculite particles dispersed in the base. In the collapsible material of the present invention, it is preferable that the hydraulic material is formed of at least one of cement and gypsum and the unexpanded vermiculite particles are contained in an amount of 0.5 to 15 wt %. Also, in the collapsible material of the present invention, it is preferable that ash balloon particles are contained in an amount of 0.5 to 20 wt %. Further, in the collapsible material of the present invention, it is preferable that a coating film formed of a hydrate of the hydraulic material and silica powder is formed on the surface of the base.
    Type: Grant
    Filed: June 16, 2008
    Date of Patent: August 28, 2012
    Assignees: Kazo Shirasaki, Norihito Shirasaki
    Inventors: Kazuo Shirasaki, Yozaburo Osawa
  • COLLAPSIBLE MATERIAL, PLACEMENT RACK, INCINERATION METHOD, LOST-WAX MOLD, AND MOLD COLLAPSING METHOD
    Publication number: 20100229769
    Abstract: A collapsible material is provided which maintains a predetermined strength and shape until it is heated and increased in temperature to a desired temperature and then can collapse, after a lapse of a predetermined time. The collapsible material of the present invention is characterized by comprising a base formed of a hydrate of a hydraulic material and unexpanded vermiculite particles dispersed in the base. In the collapsible material of the present invention, it is preferable that the hydraulic material is formed of at least one of cement and gypsum and the unexpanded vermiculite particles are contained in an amount of 0.5 to 15 wt %. Also, in the collapsible material of the present invention, it is preferable that ash balloon particles are contained in an amount of 0.5 to 20 wt %. Further, in the collapsible material of the present invention, it is preferable that a coating film formed of a hydrate of the hydraulic material and silica powder is formed on the surface of the base.
    Type: Application
    Filed: June 16, 2008
    Publication date: September 16, 2010
    Inventors: Kazuo Shirasaki, Yozaburo Osawa