Patents by Inventor Ryohei Itatani

Ryohei Itatani 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: 7378062
    Abstract: A processing apparatus for subject of the present invention uses a high voltage electrode and a ground electrode, and generates plasma under atmospheric pressure in a reaction passage through which a to-be-processed subject passes. For example, even fluorocompound such as PFC including CF4 can effectively be decomposed because the fluorocompound is brought into contact with plasma in a small space for sufficient time, and the apparatus has a small and simple structure. Therefore, the apparatus can be added to each process chamber.
    Type: Grant
    Filed: May 28, 2001
    Date of Patent: May 27, 2008
    Assignees: Three Tec Co., Ltd., Youth Engineering Co., Ltd.
    Inventors: Ryohei Itatani, Mikio Deguchi, Bencherki Mebarki, Toshihiko Toda, Heitaro Ban, Ryohei Itatani, legal representative, Toshiaki Ishikawa
  • Publication number: 20040020598
    Abstract: A processing apparatus for subject of the present invention uses a high voltage electrode and a ground electrode, and generates plasma under atmospheric pressure in a reaction passage through which a to-be-processed subject passes. For example, even fluorocompound such as PFC including CF4 can effectively be decomposed because the fluorocompound is brought into contact with plasma in a small space for sufficient time, and the apparatus has a small and simple structure. Therefore, the apparatus can be added to each process chamber.
    Type: Application
    Filed: November 22, 2002
    Publication date: February 5, 2004
    Inventors: Ryohei Itatani, Mikio Deguchi, Bencherki Mebarki, Toshihiko Toda, Heitaro Ban, Toshiaki Ishikawa, Ryohei Itatani
  • Patent number: 5410216
    Abstract: A gas discharge tube that is capable of lighting in different colors. The gas discharge tube, which may contain neon and mercury vapor, and which has its inner surface coated with a photoluminescent layer, is energized with a pulse current. The resultant color of the light emitted from the gas discharge tube depends in part on the frequency of the pulse current.
    Type: Grant
    Filed: April 10, 1992
    Date of Patent: April 25, 1995
    Inventors: Masaaki Kimoto, Ryohei Itatani, Masatoshi Ryohko
  • Patent number: 5363019
    Abstract: A discharge tube including a tubular vessel which is filled with gases, and including a first gas and second gas, the first and second gases being different in excitation level and luminous color from each other. A first electrode unit axially applies an electric field to the vessel to generate a positive column in the vessel. A second electrode unit applies an electric field to the vessel to generate a negative glow in an area, the area extending substantially along a wall surface of the vessel and confronting the positive column generated by the electric field applied by the first electrode.
    Type: Grant
    Filed: September 29, 1992
    Date of Patent: November 8, 1994
    Assignee: Research Institute For Applied Sciences
    Inventors: Ryohei Itatani, Masatoshi Ryoko, Tatsushi Fujino
  • Patent number: 5270616
    Abstract: A microwave plasma generating apparatus radiates a microwave to a source gas to produce a plasma. A plurality of spaced fins are disposed in a path of travel of the microwave, from the microwave guide to an area of origin of the plasma within the plasma generating chamber to lie in a direction perpendicular to the direction of an electric field of the microwave, for the purpose of locking the position at which the plasma has been produced.
    Type: Grant
    Filed: October 30, 1992
    Date of Patent: December 14, 1993
    Assignees: Ryohei Itatani, Idemitsu Petrochemical Company Ltd.
    Inventor: Ryohei Itatani
  • Patent number: 5200043
    Abstract: A waste gas treating apparatus including a discharge tube comprising a tubular container having a gas introduction opening and a gas leading opening and at least one pair of an anodes and a cathodes placed within the container, a dc or ac power supply connected to said electrodes, and a gas flow passage formed in the discharge tube whereinat least a pair of anodes is provided opposite to each other in the flow passage,at least a pair of cathodes is provided opposite to the anodes in a direction nearly at right angles to the anodes without contacting the anodes in a space including the pair of anodes;a set of electrodes is composed of said pair of anodes and said pair of cathodes;a part or the whole of said anodes and said cathodes are composed of a plurality of plates or pillars and they are electroconductively connected integrally; anda device for forming a magnetic field application device forming a dc or ac magnetic field in the opposing direction of the cathodes is fixed to the discharge tube.
    Type: Grant
    Filed: December 31, 1991
    Date of Patent: April 6, 1993
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Takashi Ooe, Hiroyasu Minoshima, Akiko Miura, Toshinori Matsuda, Ryohei Itatani
  • Patent number: 5188862
    Abstract: A microwave plasma generating apparatus for generating plasma by radiating microwave into a space in which electric discharge takes place contains a plurality of microwave radiating means for radiating a plurality of microwaves having different directions of electric fields from each other. This microwave plasma generating apparatus can produce a diamond thin film by exciting a carbon source gas supplied into the space and bringing the excited gas into contact with a substrate to be formed thereon with the diamond thin film, the substrate being disposed in the space in which the electric discharge is performed. This apparatus can produce a large volume of plasma in a stable fashion and, as a result, provide a diamond thin film in a large area as a whole.
    Type: Grant
    Filed: September 24, 1990
    Date of Patent: February 23, 1993
    Assignee: Idemitsu Petrochemical Company Limited
    Inventors: Ryohei Itatani, Kazuyuki Fukumoto
  • Patent number: 5132590
    Abstract: A gas discharge tube that is capable of lighting in different colors. The gas discharge tube, which may contain neon and mercury vapor, and which has its inner surface coated with a photoluminescent layer, is energized with a pulse current. The resultant color of the light emitted from the gas discharge tube depends on the combination of the pulse shapes and duty factors constituting the pulse current.
    Type: Grant
    Filed: October 17, 1990
    Date of Patent: July 21, 1992
    Inventors: Masaaki Kimoto, Ryohei Itatani, Ryohko Masatoshi
  • Patent number: 5130007
    Abstract: A waste gas treating apparatus including a discharge tube comprising a tubular container having a gas introduction opening and a gas leading opening and at least one pair of an anodes and a cathodes placed within the container, a dc or ac power supply connected to said electrodes, and a gas flow passage formed in the discharge tube whereinat least a pair of anodes is provided opposite to each other in the flow passage,at least a pair of cathodes is provided opposite to the anodes in a direction nearly at right angles to the anodes without contacting the anodes in a space including the pair of anodes;a set of electrodes is composed of said pair of anodes and said pair of cathodes;a part of the whole of said anodes and said cathodes are composed of a plurality of plates or pillars and they are electroconductively connected integrally; anda device for forming a magnetic field application device forming a dc or ac magnetic field in the opposing direction of the cathodes is fixed to the discharge tube.
    Type: Grant
    Filed: November 6, 1990
    Date of Patent: July 14, 1992
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Takashi Ooe, Hiroyasu Minoshima, Akiko Miura, Toshinori Matsuda, Ryohei Itatani
  • Patent number: 4985213
    Abstract: An exhaust gas treating apparatus comprised of a discharge tube consisting of a tubular chamber having a gas introduction opening and a gas withdrawal opening and a cathode and an anode provided therein so as to form a gas flow passage, and a dc or ac power supply connected to the electrodes. The cathode is a cathode pair composed of at least one pair of cathodes positioned opposite to each other nearly parallel to the gas flow passage, and a space defined by the cathode pair communicates at one end with the gas introduction opening and at the other with the gas withdrawal opening. The anode is an anode pair composed of at least one pair of anodes positioned opposite to each other within the above space in a direction approximately at right angles to the cathodes and without contact with the cathodes. A magnetic field applying means for forming a dc or ac magnetic field is provided in a direction opposing the cathode.
    Type: Grant
    Filed: May 23, 1989
    Date of Patent: January 15, 1991
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Takashi Ooe, Shinji Ogawa, Akiko Miura, Ryohei Itatani
  • Patent number: 4780645
    Abstract: An electronic light radiation tube wherein a cathode and an anode disposed as spaced from each other by a small spacing are housed in an envelope enclosing therein a luminous gas, and a magnetic field is applied to the envelope so as to cause magnetic lines of force of the magnetic field to pass through the envelope, while the magnetic lines of force which have passed through the cathode are prevented from passing through the anode, whereby electrons emitted from the cathode are caused to collide at a high efficiency with the luminous gas throughout the entire interior space of the envelope to excite the gas, and highly uniform light radiation can be realized over the entire envelope.
    Type: Grant
    Filed: December 31, 1986
    Date of Patent: October 25, 1988
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Makoto Toho, Koji Hiramatsu, Tadao Uetsuki, Ryohei Itatani
  • Patent number: 4321506
    Abstract: A discharge lamp comprises a high pressure arc tube for high pressure and a low pressure arc tube for low pressure which is electrically connected in parallel to said high pressure arc tube in an outer tube.A lighting equipment comprises a high pressure arc tube for high pressure discharge and a low pressure arc tube for low pressure which is electrically connected in parallel to said high pressure arc tube; and a high frequency lighting starter having 1 KHz to 100 KHz for starting the discharge of said high pressure arc tube.
    Type: Grant
    Filed: December 18, 1979
    Date of Patent: March 23, 1982
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Michihiro Tsuchihashi, Ryohei Itatani, Masatoshi Ryohko, Yutaka Murai