Patents by Inventor Akikuni Nozoe

Akikuni Nozoe 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).

  • Monocrystal rod pulled from a melt
    Patent number: 5196086
    Abstract: A monocrystal rod utilized for producing the semiconductor device or solar cell includes a neck section, a main rod section and a shoulder section. The neck section is smaller in diameter than a seed crystal. The main rod section is formed integrally with the neck section and is larger in diameter than the neck section. The shoulder section is tapered for linking the neck section to the main rod section. The main rod section has a stopper section at the top portion of the main rod section, and the stopper section is larger than the main rod section.Also, an apparatus for preparing the monocrystal rod has a safety member for supporting upward the stopper section of the falling monocrystal rod.Further, a method of preparing the monocrystal rod includes the steps as follows. The seed crystal is pulled out from a melt in a crucible while rotating it.
    Type: Grant
    Filed: January 17, 1992
    Date of Patent: March 23, 1993
    Assignee: Mitsubishi Materials Corporation
    Inventors: Michio Kida, Kensho Sahira, Akikuni Nozoe
  • Monocrystal rod pulled from a melt
    Patent number: 5173270
    Abstract: A monocrystal rod utilized for producing the semiconductor device or solar cell includes a neck section, a main rod section and a shoulder section. The neck section is smaller in diameter than a seed crystal. The main rod section is formed integrally with the neck section and is larger in diameter than the neck section. The shoulder section is tapered for linking the neck section to the main rod section. The main rod section has a stopper section at the top portion of the main rod section, and the stopper section is larger than the main rod section.Also, an apparatus for preparing the monocrystal rod has a safety member for supporting upwards the stopper section of the falling monocrystal rod.Further, a method of preparing the monocrystal rod includes the steps as follows. The seed crystal is pulled out from a melt in a crucible while rotating it.
    Type: Grant
    Filed: August 16, 1990
    Date of Patent: December 22, 1992
    Assignee: Mitsubishi Materials Corporation
    Inventors: Michio Kida, Kensho Sahira, Akikuni Nozoe
  • Monocrystal rod pulled from a melt
    Patent number: 4973518
    Abstract: A monocrystal rod utilized for producing the semiconductor device or solar cell includes a neck section, a main rod section and a shoulder section. The neck section is smaller in diameter than a seed crystal. The main rod section is formed integrally with the neck section and is larger in diameter than the neck section. The shoulder section is tapered for linking the neck section to the main rod section. The main rod section has a stopper section at the top portion of the main rod section, and the stopper section is larger than the main rod section.Also, an apparatus for preparing the monocrystal rod has a safety member for supporting upwards the stopper section of the falling monocrystal rod.Further, a method of preparing the monocrystal rod includes the steps as follows. The seed crystal is pulled out from a melt in a crucible while rotating it.
    Type: Grant
    Filed: April 7, 1988
    Date of Patent: November 27, 1990
    Assignee: Mitsubishi Kinzoku Kabushiki Kaisha
    Inventors: Michio Kida, Kensho Sahira, Akikuni Nozoe