Patents by Inventor Hisaji Oyake

Hisaji Oyake 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: 11374261
    Abstract: An electrochemical device has a laminated body including: a positive electrode; a negative electrode; and a solid electrolyte sandwiched between the positive electrode and the negative electrode, wherein the laminated body contains water, a content of the water contained in the laminated body is 0.001 mass % or more and less than 0.3 mass % with respect to the laminated body, a part of the water is a bound water bonding with a constituent of the laminated body, and a ratio of the bound water in the water is 50% or more and 90% or less.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: June 28, 2022
    Assignee: TDK CORPORATION
    Inventors: Masahiro Oishi, Hisaji Oyake, Hiroshi Sato, Hiroko Takayanagi, Gakuho Isomichi
  • Patent number: 11342579
    Abstract: The present invention aims to provide an all-solid-state lithium ion secondary battery having a high reliability which does not have a decrease in battery capacity due to absorption of moisture in the air. The all-solid-state lithium ion secondary battery is provided with a battery body having an electrolyte layer between a positive electrode layer and a negative electrode layer, a pair of terminal electrodes respectively connected to the positive electrode layer and the negative electrode layer at both end portions of the battery body, and a moisture-proof layer disposed on surfaces excluding the surfaces to be the terminal electrodes, wherein the moisture-proof layer contains a cured product of a composition containing a polymer compound and metal compound particles.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: May 24, 2022
    Assignee: TDK CORPORATION
    Inventors: Hiroaki Takahata, Hisaji Oyake, Masayuki Muroi, Tetsuya Ueno
  • Publication number: 20200274194
    Abstract: The present invention aims to provide an all-solid-state lithium ion secondary battery having a high reliability which does not have a decrease in battery capacity due to absorption of moisture in the air. The all-solid-state lithium ion secondary battery is provided with a battery body having an electrolyte layer between a positive electrode layer and a negative electrode layer, a pair of terminal electrodes respectively connected to the positive electrode layer and the negative electrode layer at both end portions of the battery body, and a moisture-proof layer disposed on surfaces excluding the surfaces to be the terminal electrodes, wherein the moisture-proof layer contains a cured product of a composition containing a polymer compound and metal compound particles.
    Type: Application
    Filed: March 28, 2018
    Publication date: August 27, 2020
    Applicant: TDK CORPORATION
    Inventors: Hiroaki TAKAHATA, Hisaji OYAKE, Masayuki MUROI, Tetsuya UENO
  • Publication number: 20200067133
    Abstract: An all-solid-state lithium ion secondary battery including: a layered body in which a plurality of electrode layers are laminated with a solid electrolyte layer therebetween, a current collector layer and an active material layer being laminated in each of the electrode layers; and a terminal electrode that is formed such that the terminal electrode is in contact with a side surface of the layered body from which end surfaces of the electrode layers are exposed, in which the terminal electrode contains Cu, and Cu-containing regions are formed at grain boundaries that are present near the terminal electrode among grain boundaries of particles that form the active material layers and the solid electrolyte layer.
    Type: Application
    Filed: March 29, 2018
    Publication date: February 27, 2020
    Applicant: TDK CORPORATION
    Inventors: Hiroshi SATO, Keiko TAKEUCHI, Masayuki MUROI, Taisuke MASUKO, Hisaji OYAKE, Tomohiro YANO
  • Publication number: 20200028215
    Abstract: An all-solid-state lithium ion secondary battery includes a plurality of electrode layers that are laminated with a solid electrolyte layer therebetween, a current collector layer and an active material layer being laminated in each of the electrode layers, the current collector layers contain Cu, and Cu-containing regions are formed at grain boundaries that are present near the current collector layer among grain boundaries of particles that form the active material layer.
    Type: Application
    Filed: March 29, 2018
    Publication date: January 23, 2020
    Applicant: TDK CORPORATION
    Inventors: Hiroshi SATO, Keiko TAKEUCHI, Masayuki MUROI, Taisuke MASUKO, Hisaji OYAKE, Tomohiro YANO
  • Publication number: 20200014070
    Abstract: An electrochemical device has a laminated body including: a positive electrode; a negative electrode; and a solid electrolyte sandwiched between the positive electrode and the negative electrode, wherein the laminated body contains water, a content of the water contained in the laminated body is 0.001 mass % or more and less than 0.3 mass % with respect to the laminated body, a part of the water is a bound water bonding with a constituent of the laminated body, and a ratio of the bound water in the water is 50% or more and 90% or less.
    Type: Application
    Filed: August 4, 2017
    Publication date: January 9, 2020
    Applicant: TDK CORPORATION
    Inventors: Masahiro OISHI, Hisaji OYAKE, Hiroshi SATO, Hiroko TAKAYANAGI, Gakuho ISOMICHI
  • Patent number: 7297472
    Abstract: The present invention relates to a method for processing a photoresist-coated board, a method for manufacturing a stamper for a recording medium and a method for manufacturing a recording medium which can form a fine raised and depressed pattern having a uniform width after development even in the case where a laser beam having a relatively long wavelength is used for forming pre-pits on a recording medium with high accuracy. A photoresist-coated board 108 is constituted by laminating a light absorption layer 108b and a photosensitive material layer 108c on a glass substrate 108a in this order and is exposed to a laser beam 102 by condensing the laser beam 102 onto the photosensitive material layer 108c, thereby forming a raised and depressed pattern corresponding to pre-pits on the the photosensitive material layer 108.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: November 20, 2007
    Assignee: TDK Corporation
    Inventors: Hisaji Oyake, Tatsuya Kato, Hajime Utsunomiya, Masanori Shibahara, Kenji Yoneyama
  • Patent number: 7204188
    Abstract: A stamper with a sharp uneven pattern for manufacturing high precision information media and a method of manufacturing a stamper. The method includes (1) manufacturing a photoresist master by forming a light absorption layer and a photoresist layer on substrate, (2) forming a latent image on the photoresist layer, and an uneven pattern in the photoresist layer by developing the latent image, (3) forming a Ni thin film on the uneven pattern by electroless plating, (4) forming a Ni film on the Ni thin film, and (5) removing the Ni thin film and the Ni film from the photoresist master. The method also includes, prior to the step of forming the Ni thin film on the photoresist layer, a metal catalyst being provided on the surface of the uneven pattern, the metal catalyst being activated, and the surface of the uneven pattern being washed with ultra pure water.
    Type: Grant
    Filed: January 6, 2003
    Date of Patent: April 17, 2007
    Assignee: TDK Corporation
    Inventors: Hisaji Oyake, Hiroaki Takahata, Kenji Yoneyama, Yuuichi Kawaguchi
  • Publication number: 20060291367
    Abstract: A ROM type optical recording medium 1 includes a substrate 2, a light transmitting layer 4, and a reflecting layer 3 formed between the substrate 2 and the light transmitting layer 4 and containing a metal as a principal component and has such a structure that a laser beam is irradiated through the light transmitting layer 4 to reproduce data. The reflecting layer 3 is formed on the substrate 2 and includes a second reflecting film 3a having nitrogen added thereto and a first reflecting film 3b formed on the second reflecting film 3a and having no nitrogen added thereto.
    Type: Application
    Filed: July 21, 2005
    Publication date: December 28, 2006
    Applicant: TDK Corporation
    Inventors: Hiroshi Takasaki, Hisaji Oyake
  • Publication number: 20060013113
    Abstract: An ROM type optical recording medium including a substrate 2, a reflecting layer 3 formed on one of the surfaces of the substrate 2, a first resin layer 4 formed on the reflecting layer 3, a first hard coat layer 5 formed on the first resin layer 4, a moisture-proof layer 6 formed on the other surface of the substrate 2, a second resin layer 7 formed on the moisture-proof layer 6, and a second hard coat layer 8 formed on the second resin layer 7, wherein the moisture-proof layer 6 contains, as a principal component, the same element as that contained as a principal component in the reflecting layer 3.
    Type: Application
    Filed: July 14, 2005
    Publication date: January 19, 2006
    Applicant: TDK Corporation
    Inventors: Takashi Yamada, Hisaji Oyake, Kazuki Suzawa
  • Publication number: 20050286401
    Abstract: In a ROM-type optical recording medium including a substrate 2 having a plurality of concave pits 2a formed on a surface thereof, a light transmission layer 4, and a reflective layer 3 formed between the substrate 2 and the light transmission layer 4, and adapted to reproduce data by causing a laser beam to be irradiated through the light transmission layer 4, the concave pits 2a on the surface of the substrate 2 has a larger length than a basic length BL to be determined according to data to be recorded, and the length of spaces 2b between the concave pits 2a adjacent to each other in a track direction has a smaller length than the basic length BL.
    Type: Application
    Filed: June 28, 2005
    Publication date: December 29, 2005
    Applicant: TDK CORPORATION
    Inventors: Hisaji Oyake, Yuuichi Kawaguchi, Jin Kutsukake, Kenichi Kitamura, Takashi Koshimizu, Koji Mishima
  • Publication number: 20050232130
    Abstract: A stamper (36) used for fabricating an optical recording medium is fabricated by forming a convexo-concave pattern (22) without development of a photoresist layer (16). A fabrication method of the stamper used for fabricating an optical recording medium includes: forming a light-absorbing layer (14) and the photoresist layer (16) on a glass substrate (10); forming the convexo-concave pattern (22) of undeveloped photoresist by irradiating the photoresist layer (16) with laser light from a surface of the photoresist layer that is opposite to the light-absorbing layer (14) so as to remove a part of the photoresist layer by energy of the laser light, thereby fabricating a photoresist master (26); forming a metal thin layer (28) on the convexo-concave pattern (22) in the photoresist master (26); forming a metal layer (30) on the metal thin layer (28) by electro-plating; and forming the stamper (36) by separating the metal thin layer (28) and the metal layer (30) from the photoresist master (26).
    Type: Application
    Filed: May 30, 2003
    Publication date: October 20, 2005
    Applicant: TDK CORPORATION
    Inventors: Hisaji Oyake, Hiroaki Takahata, Kenji Shirasuna
  • Publication number: 20050142320
    Abstract: The present invention relates to a method for processing a photoresist-coated board, a method for manufacturing a stamper for a recording medium and a method for manufacturing a recording medium which can form a fine raised and depressed pattern having a uniform width after development even in the case where a laser beam having a relatively long wavelength is used for forming pre-pits on a recording medium with high accuracy. A photoresist-coated board 108 is constituted by laminating a light absorption layer 108b and a photosensitive material layer 108c on a glass substrate 108a in this order and is exposed to a laser beam 102 by condensing the laser beam 102 onto the photosensitive material layer 108c, thereby forming a raised and depressed pattern corresponding to pre-pits on the the photosensitive material layer 108.
    Type: Application
    Filed: March 10, 2003
    Publication date: June 30, 2005
    Applicant: TDK CORPORATION
    Inventors: Hisaji Oyake, Tatsuya Kato, Hajime Utsunomiya, Masanori Shibahara, Kenji Yoneyama
  • Publication number: 20050118534
    Abstract: A stamper with a sharp uneven pattern is obtained, and high precision information media can be manufactured using this stamper. A photoresist master 100 is manufactured by forming a light absorption layer 103 with a film thickness T that satisfies T>180 (nm) and a photoresist layer 104, in that order, on top of a substrate 102, and then forming an uneven pattern 106 in the photoresist layer 104 by forming and developing a latent image, and a stamper 120 is manufactured by forming a Ni thin film 108 on top of the uneven pattern 106 of the photoresist master 100 by electroless plating, forming a Ni film 110 on top of this Ni thin film 108 by electroforming, and then separating the Ni thin film 108 and the Ni film 110 from the photoresist master 100.
    Type: Application
    Filed: January 6, 2003
    Publication date: June 2, 2005
    Inventors: Hisaji Oyake, Hiroaki Takahata, Kenji Yoneyama, Yuuichi Kawaguchi
  • Publication number: 20050066825
    Abstract: A stamper with a sharp protrusion/depression pattern is obtained, and high precision information media can be produced using this stamper. A method of manufacturing a stamper comprises the steps of manufacturing a photoresist master 100 by laminating a light absorption layer 103 and a photoresist layer 104 on top of a substrate 102, and then forming an protrusion/depression pattern 106 in the photoresist layer 104 by forming and developing a latent image, providing Pd on the surface of the protrusion/depression pattern 106 as a preliminary treatment to conducting electroless plating onto the protrusion/depression pattern of the photoresist master 100, and forming a stamper 120 by forming a thin metal film 108 on top of the Pd-containing protrusion/depression pattern surface by using electroless plating, forming a Ni film 110 on top of this Ni thin film 108 using electroforming, and then removing the thin metal film 108 and the Ni film 110.
    Type: Application
    Filed: December 27, 2002
    Publication date: March 31, 2005
    Inventors: Hisaji Oyake, Hiroaki Takahata, Hitoshi Arai, Hajime Utsunomiya
  • Publication number: 20050064345
    Abstract: A method for manufacturing a photoresist-coated glass board includes steps of forming a resin layer containing a benzophenone system compound on a glass board, forming a photoresist layer on the resin layer, intermittently projecting a laser beam for exposure having a wavelength ? of 100 nm to 300 nm onto the photoresist layer, forming a latent image of a pit pattern so that a half-width l of a shortest pit length is equal to or shorter than 0.65 ?, and developing the photoresist layer in which the latent image is formed to form a pit pattern in the photoresist layer. According to thus constituted method for manufacturing a photoresist-coated glass board, a photoresist-coated glass board can be formed with pits of a pit pattern in a desired manner using a laser beam having a short wavelength.
    Type: Application
    Filed: August 5, 2004
    Publication date: March 24, 2005
    Applicant: TDK Corporation
    Inventor: Hisaji Oyake
  • Publication number: 20050039621
    Abstract: A stamper with a sharp uneven pattern is obtained, and high precision information media can be manufactured using this stamper.
    Type: Application
    Filed: January 6, 2003
    Publication date: February 24, 2005
    Applicant: TDK Corporation
    Inventors: Hisaji Oyake, Hiroaki Takahata, Kenji Yoneyama, Yuuichi Kawaguchi
  • Publication number: 20050042427
    Abstract: A stamper with a sharp uneven pattern and a favorable surface state is obtained. A photoresist master 100 is manufactured by forming a light absorption layer 103 and a photoresist layer 104, in that order, on top of a substrate 102, and then forming an uneven pattern 106 in the photoresist layer 104 by forming and developing a latent image, a Ni thin film 108 is formed on top of the uneven pattern 106 of the photoresist master 100 using either a sputtering method or a vapor deposition method, a Ni film 110 is formed on top of the Ni thin film 108, and then the Ni thin film 108 and the Ni film 110 are separated from the photoresist master 100 to form a stamper 120.
    Type: Application
    Filed: January 6, 2003
    Publication date: February 24, 2005
    Applicant: tdk corp.
    Inventors: Hisaji Oyake, Hiroaki Takahata, Hajime Utsunomiya
  • Publication number: 20050034617
    Abstract: A stamper for forming a data recording region on a recording medium substrate by means of a transfer surface thereof. The transfer surface transfers a predetermined set of data to the recording medium substrate. The stamper is fitted on at least one of metal molds that are arranged opposite one another for forming the recording medium substrate. The stamper includes a stepped portion formed as bends in the material of the stamper. The stepped portion is configured to project from the transfer surface toward the recording medium substrate.
    Type: Application
    Filed: September 30, 2004
    Publication date: February 17, 2005
    Applicant: TDK Corporation
    Inventors: Yuuichi Kawaguchi, Kenji Yamaga, Hiroaki Takahata, Hisaji Oyake, Yoshimi Sakai
  • Publication number: 20050006336
    Abstract: An information medium master manufacturing method forms a latent image by emitting an exposing beam onto a photoresist layer formed on a light absorbing layer, then develops the latent image to expose a part of the light absorbing layer from the photoresist layer, dry etches the light absorbing layer using the photoresist layer as a mask to form concave parts in the light absorbing layer, and removes the remaining photoresist layer from the light absorbing layer to manufacture a master in which a protrusion/depression pattern is formed. The light absorbing layer is formed of a resin material such that the selection ratio of the etching rate of the photoresist layer to the etching rate of the light absorbing layer is 0.5 or above during the dry etching.
    Type: Application
    Filed: November 29, 2002
    Publication date: January 13, 2005
    Inventors: Hiroaki Takahata, Hisaji Oyake