Patents by Inventor Tsutomu Taira

Tsutomu Taira 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).

  • Method of treating waste water and apparatus for treating waste water using the method
    Patent number: 6652759
    Abstract: The present invention provides a method of treating waste water including nitrogen-containing organic compounds to convert these compounds into harmless gases without performing a post-treatment. The method comprises spraying waste water in a heated space to gasify the waste water into waste gas, and oxidizing the waste gas by contacting it with a catalyst to convert the nitrogen-containing organic compounds into harmless gases. An apparatus for treating waste water using the method is also disclosed.
    Type: Grant
    Filed: April 12, 2001
    Date of Patent: November 25, 2003
    Assignees: NEC Corporation, Nippon Shokubai Co., Ltd.
    Inventors: Tsutomu Taira, Keiji Hirano, Junji Okamura, Mitsuaki Ikeda, Kunio Sano
  • Method and apparatus for processing biologically hardly degradable waste water capable of reducing ozone
    Patent number: 6589432
    Abstract: In a method for processing a biologically hardly degradable waste water including benzene ring materials, the waste water is oxidized by using ozone to produce oxalic acid. Then, the oxalic acid is reacted using a chemical reaction to produce oxalate. Finally, the oxalate is separated out from the waste water.
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: July 8, 2003
    Assignee: NEC Electronics Corporation
    Inventor: Tsutomu Taira
  • Wash water or immersion water used during semiconductor manufacturing
    Publication number: 20030094610
    Abstract: A hydrogen dissolving device 2 is connected to a high-purity water processing device 1. Hydrogen is dissolved into the high-purity water in the hydrogen dissolving device 2 to produce hydrogen-dissolved water. The hydrogen-dissolved water is conveyed via a transport line 7 to a wash apparatus 5 or to an immersion apparatus 6. The hydrogen-dissolved water exiting from the transport line 7 inhibits oxidation of semiconductor devices during wash or immersion process.
    Type: Application
    Filed: October 25, 2002
    Publication date: May 22, 2003
    Inventors: Hidemitsu Aoki, Hiroaki Tomimori, Kenichi Yamamoto, Keiji Hirano, Tsutomu Taira, Yukinari Yamashita, Takashi Futatsuki
  • Method and apparatus for processing biologically hardly degradable waste water capable of reducing ozone
    Publication number: 20020108912
    Abstract: In a method for processing a biologically hardly degradable waste water including benzene ring materials, the waste water is oxidized by using ozone to produce oxalic acid. Then, the oxalic acid is reacted using a chemical reaction to produce oxalate. Finally, the oxalate is separated out from the waste water.
    Type: Application
    Filed: April 22, 2002
    Publication date: August 15, 2002
    Inventor: Tsutomu Taira
  • Method and apparatus for processing biologically hardly degradable waste water capable of reducing ozone
    Patent number: 6402966
    Abstract: In a method for processing a biologically hardly degradable waste water including benzene ring materials, the waste water is oxidized by using ozone to produce oxalic acid. Then, the oxalic acid is reacted using a chemical reaction to produce oxalate. Finally, the oxalate is separated out from the waste water.
    Type: Grant
    Filed: November 9, 2000
    Date of Patent: June 11, 2002
    Assignee: NEC Corporation
    Inventor: Tsutomu Taira
  • Method of treating waste water and apparatus for treating waste water using the method
    Publication number: 20010040135
    Abstract: The present invention provides a method of treating waste water including nitrogen-containing organic compounds to convert harmless gases without post-treatment. The method comprises steps of spraying the waste water in a heated space to gasify the waste water to waste gas, and oxidizing the waste gas by contacting with a catalyst to convert the nitrogen-containing organic compound into harmless gases.
    Type: Application
    Filed: April 12, 2001
    Publication date: November 15, 2001
    Inventors: Tsutomu Taira, Keiji Hirano, Junji Okamura, Mitsuaki Ikeda, Kunio Sano