Patents by Inventor Sosuke Sowa

Sosuke Sowa 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: 6516743
    Abstract: An LPE (Liquid Phase Epitaxy) apparatus is diverted to a Zn-diffusion apparatus for diffusing Zn into III-V group compound semiconductor. The Zn-diffusion apparatus comprises a base plank extending in a direction, having a wafer-storing cavity for storing an object wafer and an exhaustion hole for exhaling gases, a slider having a frame and a cap plate for attaching to or detaching from the frame, the frame having serially aligning M rooms with an open bottom and a rack being separated from each other by (M−1) partition walls, a manipulating bar for sliding the slider upon the base plank forward or backward in the direction, a tube for enclosing the base plank and the slider and for being capable of being made vacuous, a heater surrounding the tube for heating the slider, each rack of the rooms being allocated with a Zn-diffusion material and a V element material (or a non-doped capping wafer) in turn for aligning the rooms into repetitions of a V element room and a diffusion room.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: February 11, 2003
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Yasuhiro Iguchi, Sosuke Sowa
  • Publication number: 20010034111
    Abstract: An LPE (Liquid Phase Epitaxy) apparatus is diverted to a Zn-diffusion apparatus for diffusing Zn into III-V group compound semiconductor. The Zn-diffusion apparatus comprises a base plank extending in a direction, having a wafer-storing cavity for storing an object wafer and an exhaustion hole for exhaling gases, a slider having a frame and a cap plate for attaching to or detaching from the frame, the frame having serially aligning M rooms with an open bottom and a rack being separated from each other by (M−1) partition walls, a manipulating bar for sliding the slider upon the base plank forward or backward in the direction, a tube for enclosing the base plank and the slider and for being capable of being made vacuous, a heater surrounding the tube for heating the slider, each rack of the rooms being allocated with a Zn-diffusion material and a V element material (or a non-doped capping wafer) in turn for aligning the rooms into repetitions of a V element room and a diffusion room.
    Type: Application
    Filed: February 2, 2001
    Publication date: October 25, 2001
    Inventors: Yasuhiro Iguchi, Sosuke Sowa
  • Patent number: 6214708
    Abstract: An LPE (Liquid Phase Epitaxy) apparatus is diverted to a Zn-diffusion apparatus for diffusing Zn into III-V group compound semiconductor. The Zn-diffusion apparatus comprises a base plank extending in a direction, having a wafer-storing cavity for storing an object wafer and an exhaustion hole for exhaling gases, a slider having a frame and a cap plate for attaching to or detaching from the frame, the frame having serially aligning M rooms with an open bottom and a rack being separated from each other by (M−1) partition walls, a manipulating bar for sliding the slider upon the base plank forward or backward in the direction, a tube for enclosing the base plank and the slider and for being capable of being made vacuous, a heater surrounding the tube for heating the slider, each rack of the rooms being allocated with a Zn-diffusion material and a V element material (or a non-doped capping wafer) in turn for aligning the rooms into repetitions of a V element room and a diffusion room.
    Type: Grant
    Filed: July 29, 1999
    Date of Patent: April 10, 2001
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Yasuhiro Iguchi, Sosuke Sowa