Patents by Inventor Kouji Mitsuhashi

Kouji Mitsuhashi 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: 8877002
    Abstract: An internal member of a plasma processing vessel includes a base material and a film formed by thermal spraying of ceramic on a surface of the base material. The film is formed of ceramic which includes at least one kind of element selected from the group consisting of B, Mg, Al, Si, Ca, Cr, Y, Zr, Ta, Ce and Nd. In addition, at least a portion of the film is sealed by a resin.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: November 4, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Kouji Mitsuhashi, Hiroyuki Nakayama, Nobuyuki Nagayama, Tsuyoshi Moriya, Hiroshi Nagaike
  • Patent number: 8739732
    Abstract: A plasma treatment container internal member, which is used in a plasma treatment container for performing a process on an object to be treated by plasma, includes an anodic oxide coating formed on a surface of a base material of the plasma treatment container internal member by an anodic oxidation treatment using plasma discharge, and a thermally sprayed film formed on the anodic oxide coating. The anodic oxidation treatment includes immersing the base material in an alkaline organic solvent, and performing the plasma discharge in the alkaline organic solvent.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: June 3, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Nobuyuki Nagayama, Hiroyuki Nakayama, Kouji Mitsuhashi
  • Publication number: 20130255881
    Abstract: An internal member of a plasma processing vessel includes a base material and a film formed by thermal spraying of ceramic on a surface of the base material. The film is formed of ceramic which includes at least one kind of element selected from the group consisting of B, Mg, Al, Si, Ca, Cr, Y, Zr, Ta, Ce and Nd. In addition, at least a portion of the film is sealed by a resin.
    Type: Application
    Filed: May 24, 2013
    Publication date: October 3, 2013
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Kouji MITSUHASHI, Hiroyuki NAKAYAMA, Nobuyuki NAGAYAMA, Tsuyoshi MORIYA, Hiroshi NAGAIKE
  • Patent number: 8449715
    Abstract: An internal member of a plasma processing vessel includes a base material and a film formed by thermal spraying of ceramic on a surface of the base material. The film is formed of ceramic which includes at least one kind of element selected from the group consisting of B, Mg, Al, Si, Ca, Cr, Y, Zr, Ta, Ce and Nd. In addition, at least a portion of the film is sealed by a resin.
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: May 28, 2013
    Assignee: Tokyo Electron Limited
    Inventors: Kouji Mitsuhashi, Hiroyuki Nakayama, Nobuyuki Nagayama, Tsuyoshi Moriya, Hiroshi Nagaike
  • Publication number: 20120186985
    Abstract: A forming method for an anodized aluminum film on a component for a substrate processing apparatus that subjects a substrate to plasma processing. The forming method includes connecting the component to the anode of a DC power source and immersing the component in a solution consisting mainly of an oxalic acid, and a step of immersing the component in the boiling water for 5 to 10 minutes. The anodized aluminum film grows toward the inside of the component. The amount of expansion and growth of the anodized aluminum film subjected to the semi-sealing process using the boiling water is smaller than the amount of expansion and growth of an anodized aluminum film subjected to a sealing process using water vapor. Further, generation of compressive force due to collision of crystal pillars in the anodized aluminum film is prevented when subjected to the semi-sealing process using the boiling water.
    Type: Application
    Filed: March 30, 2012
    Publication date: July 26, 2012
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Kouji MITSUHASHI, Tomoya Okubo
  • Patent number: 8118936
    Abstract: The present invention presents an improved baffle plate for a plasma processing system, wherein the design and fabrication of the baffle plate advantageously provides for a uniform processing plasma in the process space with substantially minimal erosion of the baffle plate.
    Type: Grant
    Filed: January 5, 2007
    Date of Patent: February 21, 2012
    Assignee: Tokyo Electron Limited
    Inventors: Hidehito Saigusa, Taira Takase, Kouji Mitsuhashi, Hiroyuki Nakayama
  • Patent number: 8117986
    Abstract: The present invention presents an improved deposition shield for surrounding a process space in a plasma processing system, wherein the design and fabrication of the deposition shield advantageously provides for a clean processing plasma in the process space with substantially minimal erosion of the deposition shield.
    Type: Grant
    Filed: October 16, 2006
    Date of Patent: February 21, 2012
    Assignee: Tokyo Electron Limited
    Inventors: Hidehito Saigusa, Taira Takase, Kouji Mitsuhashi, Hiroyuki Nakayama
  • Patent number: 8057600
    Abstract: The present invention presents an improved baffle plate for a plasma processing system, wherein the design and fabrication of the baffle plate advantageously provides for a uniform processing plasma in the process space with substantially minimal erosion of the baffle plate.
    Type: Grant
    Filed: May 7, 2007
    Date of Patent: November 15, 2011
    Assignee: Tokyo Electron Limited
    Inventors: Shinya Nishimoto, Kouji Mitsuhashi, Hiroyuki Nakayama
  • Patent number: 8058186
    Abstract: A focus ring is shaped by cutting off a silicon carbide body formed by a sintering method or a CVD method. The shaped focus ring is exposed to a plasma generated from at least one of a carbon tetra fluoride gas and an oxygen gas for producing impurities, and the impurities are introduced to void-like defects existing in the vicinity of a surface of the focus ring. Subsequently, positrons are injected in the vicinity of the surface of the focus ring into which the impurities are introduced, and the defect density in the vicinity of the surface of the focus ring is detected by the positron annihilation method.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: November 15, 2011
    Assignee: Tokyo Electron Limited
    Inventors: Tsuyoshi Moriya, Kouji Mitsuhashi, Akira Uedono
  • Patent number: 7942975
    Abstract: A ceramic sprayed member-cleaning method which is capable of reliably suppressing desorption and attachment of water. The surface of a ceramic sprayed member and water are chemically bonded to each other, whereby the water is stabilized. Water physically adsorbed on the surface of the ceramic sprayed member is desorbed.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: May 17, 2011
    Assignee: Tokyo Electron Limited
    Inventors: Tsuyoshi Moriya, Kouji Mitsuhashi
  • Patent number: 7892361
    Abstract: An in-chamber member to use in the chamber of a plasma processing vessel has a coating film formed by a coating agent. The in-chamber member having deposits formed on the coating film is separated from the chamber and is immersed into a peeling solvent, e.g., acetone. Since the coating agent is made of a resist formed of a main component of, e.g., cyclized rubber-bisazide and a photosensitive component, the deposits can be separated from the in-chamber member together with the coating film being separated.
    Type: Grant
    Filed: April 2, 2008
    Date of Patent: February 22, 2011
    Assignee: Tokyo Electron Limited
    Inventors: Nobuyuki Nagayama, Kouji Mitsuhashi, Hiroyuki Nakayama
  • Publication number: 20100307687
    Abstract: An internal member of a plasma processing vessel includes a base material and a film formed by thermal spraying of ceramic on a surface of the base material. The film is formed of ceramic which includes at least one kind of element selected from the group consisting of B, Mg, Al, Si, Ca, Cr, Y, Zr, Ta, Ce and Nd. In addition, at least a portion of the film is sealed by a resin.
    Type: Application
    Filed: July 16, 2010
    Publication date: December 9, 2010
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Kouji MITSUHASHI, Hiroyuki Nakayama, Nobuyuki Nagayama, Tsuyoshi Moriya, Hiroshi Nagaike
  • Patent number: 7811428
    Abstract: The present invention presents an improved optical window deposition shield for optical access to a process space in a plasma processing system through a deposition shield, wherein the design and fabrication of the optical window deposition shield advantageously provides an optically clean access to the processing plasma in the process space while sustaining substantially minimal erosion of the optical window deposition shield.
    Type: Grant
    Filed: January 5, 2007
    Date of Patent: October 12, 2010
    Assignee: Tokyo Electron Limited
    Inventors: Shinya Nishimoto, Kouji Mitsuhashi, Hidehito Saigusa, Taira Takase, Hiroyuki Nakayama
  • Patent number: 7780786
    Abstract: An internal member of a plasma processing vessel includes a base material and a film formed by thermal spraying of ceramic on a surface of the base material. The film is formed of ceramic which includes at least one kind of element selected from the group consisting of B, Mg, Al, Si, Ca, Cr, Y, Zr, Ta, Ce and Nd. In addition, at least a portion of the film is sealed by a resin.
    Type: Grant
    Filed: November 28, 2003
    Date of Patent: August 24, 2010
    Assignee: Tokyo Electron Limited
    Inventors: Kouji Mitsuhashi, Hiroyuki Nakayama, Nobuyuki Nagayama, Tsuyoshi Moriya, Hiroshi Nagaike
  • Patent number: 7678226
    Abstract: The present invention presents an improved bellows shield for a plasma processing system, wherein the design and fabrication of the bellows shield coupled to a substrate holder electrode advantageously provides protection of a bellows with substantially minimal erosion of the bellows shield.
    Type: Grant
    Filed: February 5, 2007
    Date of Patent: March 16, 2010
    Assignee: Tokyo Electron Limited
    Inventors: Hidehito Saigusa, Taira Takase, Kouji Mitsuhashi, Hiroyuki Nakayama
  • Patent number: 7566379
    Abstract: The present invention presents an improved upper electrode for a plasma processing system, wherein the design and fabrication of an electrode plate with a deposition shield coupled to the upper electrode advantageously provides gas injection of a process gas with substantially minimal erosion of the upper electrode while providing protection to a chamber interior.
    Type: Grant
    Filed: October 23, 2006
    Date of Patent: July 28, 2009
    Assignee: Tokyo Electron Limited
    Inventors: Shinya Nishimoto, Kouji Mitsuhashi, Hiroyuki Nakayama
  • Patent number: 7566368
    Abstract: The present invention presents an improved upper electrode for a plasma processing system, wherein the design and fabrication of an electrode plate coupled to an upper assembly advantageously provides gas injection of a process gas with substantially minimal erosion of the electrode plate.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: July 28, 2009
    Assignee: Tokyo Electron Limited
    Inventors: Hidehito Saigusa, Taira Takase, Kouji Mitsuhashi, Hiroyuki Nakayama
  • Publication number: 20090133717
    Abstract: A ceramic sprayed member-cleaning method which is capable of reliably suppressing desorption and attachment of water. The surface of a ceramic sprayed member and water are chemically bonded to each other, whereby the water is stabilized. Water physically adsorbed on the surface of the ceramic sprayed member is desorbed.
    Type: Application
    Filed: January 23, 2009
    Publication date: May 28, 2009
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Tsuyoshi MORIYA, Kouji Mitsuhashi
  • Patent number: 7481903
    Abstract: A processing device in which maintenance can be easily carried out and a burden on a worker can be reduced, and a method of maintaining the device are provided. An upper electrode unit 106 structuring a ceiling portion of a processing chamber 102 of an etching device 100 is structured from a lower assembly 128 at a processing chamber 102 side including an upper electrode 130, and an upper assembly 128 at a power supply side including an electro-body 144. A lock mechanism 156 is released, and after the upper assembly 126 is independently raised and removed by a lift mechanism 164, maintenance of the upper assembly 126 and/or the lower assembly 128 is carried out. The lock mechanism 156 is locked, and after the upper and lower assemblies 126, 128 are integrally raised and removed by the lift mechanism 164, maintenance of an interior of the processing chamber 102 is carried out.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: January 27, 2009
    Assignee: Tokyo Electron Limited
    Inventors: Shigeru Senzaki, Toshiki Sasaki, Tadashi Aoto, Nobuyuki Nagayama, Kouji Mitsuhashi
  • Publication number: 20080196744
    Abstract: An in-chamber member to use in the chamber of a plasma processing vessel has a coating film formed by a coating agent. The in-chamber member having deposits formed on the coating film is separated from the chamber and is immersed into a peeling solvent, e.g., acetone. Since the coating agent is made of a resist formed of a main component of, e.g., cyclized rubber-bisazide and a photosensitive component, the deposits can be separated from the in-chamber member together with the coating film being separated.
    Type: Application
    Filed: April 2, 2008
    Publication date: August 21, 2008
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Nobuyuki NAGAYAMA, Kouji Mitsuhashi, Hiroyuki Nakayama