Patents by Inventor Kengo ASHIZAWA

Kengo ASHIZAWA 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: 8794896
    Abstract: A vacuum processing apparatus includes a vacuum processing chamber; a load lock chamber connected to the vacuum processing chamber via a gate valve or via a gate valve and a depressurized space and also connected to an atmospheric space via a door valve, an interior atmosphere of the load lock chamber being changed between a substantially atmospheric state and a depressurized state; an air blowing portion, provided at a vicinity of the door valve in the atmospheric space, for blowing a zonal airflow vertically downward from a position substantially even with or higher than a top end of a passageway of the door valve; and an air suctioning portion for suctioning the airflow or the inert gas from the air blowing portion by a vacuum force at a position substantially even with or lower than a bottom end of the passageway of the door valve.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: August 5, 2014
    Assignee: Tokyo Electron Limited
    Inventor: Kengo Ashizawa
  • Patent number: 8623457
    Abstract: A vacuum processing system includes a transfer chamber configured to form a vacuum atmosphere through which a target object is transferred. A transfer mechanism is disposed in the transfer chamber and configured to transfer the target object. A process chamber is connected to the transfer chamber through a first gate valve and configured to perform a process on the target object within a vacuum atmosphere. A first exhaust port is formed in a bottom of the transfer chamber at the foot of the first gate valve. A first gas exhaust section is connected to the first exhaust port and configured to exhaust gas inside the transfer chamber.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: January 7, 2014
    Assignee: Tokyo Electron Limited
    Inventor: Kengo Ashizawa
  • Publication number: 20100256809
    Abstract: A vacuum processing system includes a transfer chamber configured to form a vacuum atmosphere through which a target object is transferred. A transfer mechanism is disposed in the transfer chamber and configured to transfer the target object. A process chamber is connected to the transfer chamber through a first gate valve and configured to perform a process on the target object within a vacuum atmosphere. A first exhaust port is formed in a bottom of the transfer chamber at the foot of the first gate valve. A first gas exhaust section is connected to the first exhaust port and configured to exhaust gas inside the transfer chamber.
    Type: Application
    Filed: June 16, 2010
    Publication date: October 7, 2010
    Applicant: TOKYO ELECTRON LIMITED
    Inventor: Kengo Ashizawa
  • Publication number: 20080203367
    Abstract: In an elevating device for raising and lowering a heavy member by rotating a rotation axis extending in a direction crossing a vertical direction, the rotation axis has one end portion to which the heavy member is connected. The rotation axis includes a bendable portion adapted to transmit a rotational force. A leading end portion of the free end portion is vertically suspended from the bendable portion of the rotation axis regardless of a stop position of the rotation axis. A rotation applied by the heavy member to the rotation axis is suppressed by the suspended leading end portion. With such an elevating device, unexpected rotation of the rotation axis is positively suppressed in a cost-effective manner.
    Type: Application
    Filed: March 4, 2008
    Publication date: August 28, 2008
    Applicant: TOKYO ELECTRON LIMITED
    Inventor: Kengo Ashizawa
  • Publication number: 20070130738
    Abstract: A vacuum processing apparatus includes a vacuum processing chamber; a load lock chamber connected to the vacuum processing chamber via a gate valve or via a gate valve and a depressurized space and also connected to an atmospheric space via a door valve, an interior atmosphere of the load lock chamber being changed between a substantially atmospheric state and a depressurized state; an air blowing portion, provided at a vicinity of the door valve in the atmospheric space, for blowing a zonal airflow vertically downward from a position substantially even with or higher than a top end of a passageway of the door valve; and an air suctioning portion for suctioning the airflow or the inert gas from the air blowing portion by a vacuum force at a position substantially even with or lower than a bottom end of the passageway of the door valve.
    Type: Application
    Filed: August 31, 2006
    Publication date: June 14, 2007
    Applicant: TOKYO ELECTRON LIMITED
    Inventor: Kengo Ashizawa
  • Publication number: 20070119393
    Abstract: A vacuum processing system includes a transfer chamber configured to form a vacuum atmosphere through which a target object is transferred. A transfer mechanism is disposed in the transfer chamber and configured to transfer the target object. A process chamber is connected to the transfer chamber through a first gate valve and configured to perform a process on the target object within a vacuum atmosphere. A first exhaust port is formed in a bottom of the transfer chamber at the foot of the first gate valve. A first gas exhaust section is connected to the first exhaust port and configured to exhaust gas inside the transfer chamber.
    Type: Application
    Filed: November 27, 2006
    Publication date: May 31, 2007
    Inventor: Kengo ASHIZAWA