Patents by Inventor Junichi Akiyama

Junichi Akiyama 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).

  • Publication number: 20230067815
    Abstract: Provided are a gasification furnace operating method, a gasification furnace, a two-stage gasification apparatus, a gasification method for an organic raw material, and a two-stage gasification method for organic waste that make it possible to stably operate a gasification furnace over a long period of time. The present invention provides a gasification furnace operating method including, in a gasification furnace into which an organic raw material is introduced and that produces gas and slag, directly or indirectly introducing an alkali metal-containing compound into the gasification furnace to reduce the viscosity of the slag.
    Type: Application
    Filed: December 17, 2020
    Publication date: March 2, 2023
    Applicants: SHOWA DENKO K.K., UBE CORPORATION, EBARA ENVIRONMENTAL PLANT CO., LTD.
    Inventors: Tomoaki FUKUI, Junichi AKIYAMA
  • Publication number: 20220336193
    Abstract: A disclose substrate support of a plasma processing apparatus has an electrostatic chuck that holds an edge ring. The electrostatic chuck includes a first electrode and a second electrode. In an execution period of a first plasma processing on a substrate, first potentials which are ones out of potentials same as each other and potentials different from each other are set to the first and second electrodes, respectively. In an execution period of a second plasma processing on the substrate, second potentials which are others out of the potentials same as each other and the potentials different from each other are set to the first and second electrodes, respectively. The respective potentials of the first electrode and the second electrode are switched from the first potentials to the second potentials.
    Type: Application
    Filed: July 1, 2022
    Publication date: October 20, 2022
    Applicant: Tokyo Electron Limited
    Inventors: Junichi SASAKI, Yasuharu SASAKI, Hidetoshi HANAOKA, Tomohiko AKIYAMA
  • Patent number: 11417500
    Abstract: A disclose substrate support of a plasma processing apparatus has an electrostatic chuck that holds an edge ring. The electrostatic chuck includes a first electrode and a second electrode. In an execution period of a first plasma processing on a substrate, first potentials which are ones out of potentials same as each other and potentials different from each other are set to the first and second electrodes, respectively. In an execution period of a second plasma processing on the substrate, second potentials which are others out of the potentials same as each other and the potentials different from each other are set to the first and second electrodes, respectively. The respective potentials of the first electrode and the second electrode are switched from the first potentials to the second potentials.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: August 16, 2022
    Assignee: Tokyo Electron Limited
    Inventors: Junichi Sasaki, Yasuharu Sasaki, Hidetoshi Hanaoka, Tomohiko Akiyama
  • Publication number: 20200290889
    Abstract: A method for producing a vanadate extracts a vanadium component included in combustion fly ash or clinker. In the method, a vanadium component is recovered as a vanadate from combustion fly ash or clinker, the method including the following steps 1 to 5: (1) a step of adding an aqueous sodium hydroxide solution to combustion fly ash or clinker so that the water content is 5 to 35% by mass (step 1); (2) a step of mixing or kneading (step 2); (3) a step of heating the mixed or kneaded mixture (step 3); (4) a step of adding water to the mixture that has undergone the heating step in the step 3 to form a slurry (step 4); and (5) a step of recovering a vanadate in the aqueous phase after the solid-liquid separation of the slurry (step 5).
    Type: Application
    Filed: November 22, 2018
    Publication date: September 17, 2020
    Applicant: SHOWA DENKO K.K.
    Inventors: Junichi AKIYAMA, Keiichi NAKAMURA
  • Patent number: 9190168
    Abstract: A magnetic memory includes a first magnetic line, an electrode, a write-in portion, a second magnetic line, and a spin-wave generator. The first magnetic line has a plurality of magnetic domains and domain walls, the domain wall separating the magnetic domain. The electrode is provided to both ends of the first magnetic line. The write-in portion is provided adjacent to the first magnetic line. The second magnetic line is provided so that the second magnetic line intersects with the first magnetic line. The spin-wave generator provided to one end of the second magnetic line. The spin-wave detector provided to the other end of the second magnetic line.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: November 17, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shiho Nakamura, Tsuyoshi Kondo, Hirofumi Morise, Junichi Akiyama
  • Patent number: 8982611
    Abstract: A magnetic memory element includes a first magnetic layer, a second magnetic layer, a first intermediate layer, a first magnetic wire, a first input unit, and a first detection unit. The first magnetic layer has magnetization fixed. The second magnetic layer has magnetization which is variable. The first intermediate layer is between the first magnetic layer and the second magnetic layer. The first magnetic wire extends in a first direction perpendicular to a direction connecting from the first magnetic layer to the second magnetic layer and is adjacent to the second magnetic layer. In addition, write-in is performed by propagating a first spin wave through the first magnetic wire and by passing a first current from the first magnetic layer toward the second magnetic layer. Read-out is performed by passing a second current from the first magnetic layer toward the second magnetic layer.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: March 17, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tsuyoshi Kondo, Hirofumi Morise, Shiho Nakamura, Junichi Akiyama
  • Patent number: 8654480
    Abstract: An example magnetic head includes a recording pole to generate a recording magnetic field, a spin torque oscillator formed in the vicinity of the recording magnetic pole and a hard bias film provided at both end portions of a bias layer and an oscillation layer of spin torque oscillator. The hard bias film is configured to apply a magnetic field to the bias layer and the oscillation layer.
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: February 18, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Mariko Shimizu, Hitoshi Iwasaki, Kenichiro Yamada, Junichi Akiyama, Masayuki Takagishi, Tomomi Funayama, Masahiro Takashita
  • Publication number: 20130329317
    Abstract: An example magnetic writing head includes a main magnetic pole and a coil to generate an ampere magnetic field to magnetize the main magnetic pole to cause the magnetized main magnetic pole to generate a magnetic field. The laminated body includes a first magnetic layer, and a second magnetic layer.
    Type: Application
    Filed: August 13, 2013
    Publication date: December 12, 2013
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kenichiro YAMADA, Hitoshi IWASAKI, Junichi AKIYAMA, Masayuki TAKAGISHI, Tomomi FUNAYAMA, Masahiro TAKASHITA, Mariko SHIMIZU, Shuichi MURAKAMI, Tadashi KAI
  • Patent number: 8547662
    Abstract: An example magnetic writing head includes a main magnetic pole, a coil to generate an ampere magnetic field to magnetize the main magnetic pole to cause the magnetized main magnetic pole to generate a magnetic field, and a laminated body. The laminated body includes a first magnetic layer having a coercivity lower than the magnetic field applied by the main magnetic pole and a second magnetic layer having a coercivity lower than the magnetic field applied by the main magnetic pole.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: October 1, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kenichiro Yamada, Hitoshi Iwasaki, Junichi Akiyama, Masayuki Takagishi, Tomomi Funayama, Masahiro Takashita, Mariko Shimizu, Shuichi Murakami, Tadashi Kai
  • Publication number: 20130083595
    Abstract: A magnetic memory includes a first magnetic line, an electrode, a write-in portion, a second magnetic line, and a spin-wave generator. The first magnetic line has a plurality of magnetic domains and domain walls, the domain wall separating the magnetic domain. The electrode is provided to both ends of the first magnetic line. The write-in portion is provided adjacent to the first magnetic line. The second magnetic line is provided so that the second magnetic line intersects with the first magnetic line. The spin-wave generator provided to one end of the second magnetic line. The spin-wave detector provided to the other end of the second magnetic line.
    Type: Application
    Filed: March 21, 2012
    Publication date: April 4, 2013
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shiho Nakamura, Tsuyoshi Kondo, Hirofumi Morise, Junichi Akiyama
  • Publication number: 20130077396
    Abstract: A magnetic memory element includes a first magnetic layer, a second magnetic layer, a first intermediate layer, a first magnetic wire, a first input unit, and a first detection unit. The first magnetic layer has magnetization fixed. The second magnetic layer has magnetization which is variable. The first intermediate layer is between the first magnetic layer and the second magnetic layer. The first magnetic wire extends in a first direction perpendicular to a direction connecting from the first magnetic layer to the second magnetic layer and is adjacent to the second magnetic layer. In addition, write-in is performed by propagating a first spin wave through the first magnetic wire and by passing a first current from the first magnetic layer toward the second magnetic layer. Read-out is performed by passing a second current from the first magnetic layer toward the second magnetic layer.
    Type: Application
    Filed: June 19, 2012
    Publication date: March 28, 2013
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tsuyoshi Kondo, Hirofumi Morise, Shiho Nakamura, Junichi Akiyama
  • Patent number: 8400734
    Abstract: An example magnetic recording head includes: a main magnetic pole; a laminated body; and a pair of electrodes. The laminated body includes a first magnetic layer having a coercivity lower than magnetic field applied by the main magnetic pole, a second magnetic layer having a coercivity lower than the magnetic field applied by the main magnetic pole, and an intermediate layer provided between the first magnetic layer and the second magnetic layer. The pair of electrodes is operable to pass a current through the laminated body.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: March 19, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kenichiro Yamada, Hitoshi Iwasaki, Junichi Akiyama, Masayuki Takagishi, Tomomi Funayama, Masahiro Takashita, Mariko Shimizu, Shuichi Murakami, Tadashi Kai
  • Publication number: 20120275060
    Abstract: An example magnetic head includes a recording magnetic pole to generate a recording magnetic field; a spin torque oscillator formed in the vicinity of the recording magnetic pole; and a hard bias film for applying a magnetic field to the spin torque oscillator.
    Type: Application
    Filed: July 10, 2012
    Publication date: November 1, 2012
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Mariko Shimizu, Hitoshi Iwasaki, Kenichiro Yamada, Junichi Akiyama, Masayuki Takagishi, Tomomi Funayama, Masahiro Takashita
  • Publication number: 20120268844
    Abstract: An example magnetic writing head includes a main magnetic pole, a coil to generate an ampere magnetic field to magnetize the main magnetic pole to cause the magnetized main magnetic pole to generate a magnetic field, and a laminated body. The laminated body includes a first magnetic layer having a coercivity lower than the magnetic field applied by the main magnetic pole and a second magnetic layer having a coercivity lower than the magnetic field applied by the main magnetic pole.
    Type: Application
    Filed: July 3, 2012
    Publication date: October 25, 2012
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kenichiro Yamada, Hitoshi Iwasaki, Junichi Akiyama, Masayuki Takagishi, Tomomi Funayama, Masahiro Takashita, Mariko Shimizu, Shuichi Murakami, Tadashi Kai
  • Patent number: 8295009
    Abstract: An example magnetic recording head includes: a main magnetic pole; a laminated body; and a pair of electrodes. The laminated body includes a first magnetic layer having a coercivity lower than magnetic field applied by the main magnetic pole, a second magnetic layer having a coercivity lower than the magnetic field applied by the main magnetic pole, and an intermediate layer provided between the first magnetic layer and the second magnetic layer. The pair of electrodes is operable to pass a current through the laminated body.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: October 23, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kenichiro Yamada, Hitoshi Iwasaki, Junichi Akiyama, Masayuki Takagishi, Tomomi Funayama, Masahiro Takashita, Mariko Shimizu, Shuichi Murakami, Tadashi Kai
  • Patent number: 8270112
    Abstract: It is made possible to provide a magnetic head that generates a sufficient high-frequency magnetic field for assisting recording operations, and a magnetic recording device that includes the magnetic head. A magnetic head includes: a recording magnetic pole; a return yoke magnetically coupled to the recording magnetic pole; and at least two spin torque oscillators provided near the recording magnetic pole.
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: September 18, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tomomi Funayama, Kenichiro Yamada, Masayuki Takagishi, Masahiro Takashita, Mariko Shimizu, Junichi Akiyama, Hitoshi Iwasaki
  • Patent number: 8264799
    Abstract: A magnetic device includes a first magnetic layer having at least one magnetic material layer, a second magnetic layer having at least one magnetic material layer, a first nonmagnetic layer provided between the first magnetic layer and the second magnetic layer, a third magnetic layer including a ferromagnetic material with a fixed magnetization direction, and a pair of electrodes. The pair of electrodes are operable to pass a current through a laminated body including the first and second magnetic layers, the nonmagnetic layer, and the third magnetic layer.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: September 11, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Junichi Akiyama, Kenichiro Yamada, Masayuki Takagishi, Hitoshi Iwasaki
  • Patent number: 8238060
    Abstract: A magnetic recording head includes: a main magnetic pole; a laminated body; and a pair of electrodes. The laminated body includes a first magnetic layer having a coercivity lower than magnetic field applied by the main magnetic pole, a second magnetic layer having a coercivity lower than the magnetic field applied by the main magnetic pole, and an intermediate layer provided between the first magnetic layer and the second magnetic layer. The pair of electrodes are operable to pass a current through the laminated body.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: August 7, 2012
    Inventors: Kenichiro Yamada, Hitoshi Iwasaki, Junichi Akiyama, Masayuki Takagishi, Tomomi Funayama, Masahiro Takashita, Mariko Shimizu, Shuichi Murakami, Tadashi Kai
  • Patent number: 8164854
    Abstract: A magnetic recording head includes a recording magnetic pole, and a spin oscillation device including a first magnetic layer having at least one magnetic material layer, a second magnetic layer having at least one magnetic material layer, and a first nonmagnetic layer provided between the first magnetic layer and the second magnetic layer. The first magnetic layer and the second magnetic layer are antiferromagnetically coupled and/or magnetostatically coupled to each other. The first magnetic layer and the second magnetic layer are laminated in a direction generally parallel to a medium facing surface and generally parallel to a side surface of the recording magnetic pole intersecting with the medium facing surface.
    Type: Grant
    Filed: June 4, 2008
    Date of Patent: April 24, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masayuki Takagishi, Kenichiro Yamada, Hitoshi Iwasaki, Junichi Akiyama, Tomomi Funayama, Masahiro Takashita, Mariko Shimizu
  • Patent number: 8154825
    Abstract: It is made possible to provide a magnetic head that can stabilize the high-frequency magnetic field generated from the spin torque oscillator. A magnetic head includes: first and second main magnetic poles; and a spin torque oscillator provided between the first and second main magnetic poles.
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: April 10, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masahiro Takashita, Hitoshi Iwasaki, Kenichiro Yamada, Junichi Akiyama, Masayuki Takagishi, Tomomi Funayama, Mariko Shimizu