Patents by Inventor Toshihiro Rikyuu

Toshihiro Rikyuu 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).

  • Exhaust gas filtration device and auxiliary filtration device
    Patent number: 6835221
    Abstract: The present invention has an object to improve the efficiency of collection of solidification constituents and solids in exhaust gas and to prevent early blockage of the filter without damaging the vacuum pump. In an exhaust path 48a, a vacuum pump and exhaust gas filtration device are provided. This exhaust gas filtration device is constituted by a trap device, pre-filter and filter. The pre-filter reduces the exhaust gas flow rate flowing through the interior of the exhaust path by controlling the exhaust gas flow path in the vessel. The aforesaid exhaust path is constituted by connecting this vacuum pump, trap device, pre-filter and filter which are arranged in this order from the side of airtight vessel and connected through piping if required.
    Type: Grant
    Filed: January 16, 2003
    Date of Patent: December 28, 2004
    Assignee: Anelva Corporation
    Inventors: Toshihiro Rikyuu, Keisuke Nagakura
  • Exhaust gas filtration device and auxiliary filtration device
    Publication number: 20030101699
    Abstract: The present invention has an object to improve the efficiency of collection of solidification constituents and solids in exhaust gas and to prevent early blockage of the filter without damaging the vacuum pump. In an exhaust path 48a, a vacuum pump and exhaust gas filtration device are provided. This exhaust gas filtration device is constituted by a trap device, pre-filter and filter. The pre-filter reduces the exhaust gas flow rate flowing through the interior of the exhaust path by controlling the exhaust gas flow path in the vessel. The aforesaid exhaust path is constituted by connecting this vacuum pump, trap device, pre-filter and filter which are arranged in this order from the side of airtight vessel and connected through piping if required.
    Type: Application
    Filed: January 16, 2003
    Publication date: June 5, 2003
    Inventors: Toshihiro Rikyuu, Keisuke Nagakura
  • Exhaust gas filtration device, auxiliary filtration device and trap device
    Patent number: 6547844
    Abstract: The present invention has an object to improve the efficiency of collection of solidification constituents and solids in exhaust gas and to prevent early blockage of the filter without damaging the vacuum pump. In an exhaust path 48a, a vacuum pump and exhaust gas filtration device are provided. This exhaust gas filtration device is constituted by a trap device, pre-filter and filter. The pre-filter reduces the exhaust gas flow rate flowing through the interior of the exhaust path by controlling the exhaust gas flow path in the vessel. The aforesaid exhaust path is constituted by connecting this vacuum pump, trap device, pre-filter and filter which are arranged in this order from the side of airtight vessel and connected through piping if required.
    Type: Grant
    Filed: December 12, 2000
    Date of Patent: April 15, 2003
    Assignee: Anelva Corporation
    Inventors: Toshihiro Rikyuu, Keisuke Nagakura
  • Exhaust gas filtration device, auxiliary filtration device and trap device
    Publication number: 20010003892
    Abstract: The present invention has an object to improve the efficiency of collection of solidification constituents and solids in exhaust gas and to prevent early blockage of the filter without damaging the vacuum pump. In an exhaust path 48a, a vacuum pump and exhaust gas filtration device are provided. This exhaust gas filtration device is constituted by a trap device, pre-filter and filter. The pre-filter reduces the exhaust gas flow rate flowing through the interior of the exhaust path by controlling the exhaust gas flow path in the vessel. The aforesaid exhaust path is constituted by connecting this vacuum pump, trap device, pre-filter and filter which are arranged in this order from the side of airtight vessel and connected through piping if required.
    Type: Application
    Filed: December 12, 2000
    Publication date: June 21, 2001
    Applicant: ANELVA CORPORATION
    Inventors: Toshihiro Rikyuu, Keisuke Nagakura