Patents by Inventor Akira Nagara

Akira Nagara 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).

  • Patent number: 5039630
    Abstract: Disclosed is a granular multi-cellular glass and a method for producing the same. An ordinary multi-cellular glass grain having relatively low moisture content ratio was prepared as starting material. The glass grain is then dipped in water or alkali solution for eluting or dealkali treatment. By the dipping, soluble alkali components are mainly eluted from a surface layer and cell walls of the glass grain. Thus produced multi-cellular glass grain provides increased moisture content ratio because of the formation of micropores at the layer and cell wall portions. Disclosed also are controls of physical properties of the multi-cellular glass grain for controlling specific gravity, pore volume and pore diameter thereof. By these controls, resultant glass grain is provided with desirable physical properties available for a microcarrier for immobilizing microbe therein.
    Type: Grant
    Filed: January 25, 1991
    Date of Patent: August 13, 1991
    Assignee: Kirin Beer Kabushiki Kaisha
    Inventors: Hiroshi Itami, Akira Nagara, Hiroshi Taguchi, Takashi Ehara