Patents by Inventor Ichiro NAGAI

Ichiro NAGAI 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).

  • Publication number: 20130239878
    Abstract: The invention is an apparatus for production of an aluminum nitride single crystal that produces the aluminum nitride single crystal by heating an aluminum nitride raw material to sublimate the raw material, thereby to recrystallize the aluminum nitride onto a seed crystal, which includes a growth vessel that accommodates the aluminum nitride raw material, and is composed of a material that has corrosion resistance with respect to the aluminum gas generated upon sublimation of the aluminum nitride raw material, and a heating element that is arranged on the outside of the growth vessel, and heats the aluminum nitride raw material through the growth vessel, wherein the growth vessel includes a main body which has an accommodation section that accommodates the aluminum nitride and a lid which seals the accommodation section of the main body hermetically, and wherein the heating element is composed of a metal material containing tungsten.
    Type: Application
    Filed: May 10, 2013
    Publication date: September 19, 2013
    Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, FUJIKURA LTD.
    Inventors: Hiroyuki KAMATA, Tomohisa KATOU, Ichiro NAGAI, Tomonori MIURA