Patents by Inventor Hiroyasu Kqaga

Hiroyasu Kqaga 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).

  • CHARGED PARTICLE GUN AND FOCUSED ION BEAM APPARATUS USING THE GUN
    Publication number: 20110186745
    Abstract: A charged particle gun includes: a charged particle source 1; a first extracting electrode 131 arranged in such a manner that a distance between the charged particle source 1 and the first extracting electrode 131 is fixed; a second extracting electrode 132 located on the side opposite to the charged particle source 1 with respect to the first extracting electrode 131, the electrode 132 being arranged in such a manner that a distance between the first extracting electrode 131 and the second extracting electrode 132 is adjustable; and an earth electrode 15 located on the side opposite to the first extracting electrode 131 with respect to the second extracting electrode 132, the electrode 15 being arranged in such a manner that a distance between the second extracting electrode 132 and the earth electrode 15 is fixed; wherein the first extracting electrode 131 is equal in potential to the second extracting electrode 132.
    Type: Application
    Filed: July 23, 2009
    Publication date: August 4, 2011
    Inventors: Hiroyasu Kqaga, Masashi Sasaki, Junzo Azuma