Patents by Inventor Hitoshi Tamai

Hitoshi Tamai 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: 11495800
    Abstract: An object of the present invention is to provide a lithium ion secondary battery having a high energy density and improved cycle characteristics. The present invention is related to an electrode for a power storage device comprising a negative electrode mixture layer comprising: (a) a negative electrode active material (42-2) comprising 1% or more of a material comprising Si as a constituent element; (b) a first polymer (42-1) coating the negative electrode active material and comprising vinylidene fluoride as a monomer unit; and (c) a negative electrode binder (42-3) comprising a second polymer that has a molecular weight of 80,000 or more and comprises at least one monomer unit selected from the group consisting of acrylic acid, acrylate salt, methacrylic acid, and methacrylate salt.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: November 8, 2022
    Assignee: NEC CORPORATION
    Inventors: Suguru Tamai, Hitoshi Ishikawa
  • Patent number: 11446784
    Abstract: The present invention relates to a chemical mechanical polishing (CMP) apparatus for polishing a workpiece, such as a metal body, to a mirror finish. The chemical mechanical polishing apparatus includes: a polishing pad (2) having an annular polishing surface (2a) which has a curved vertical cross-section; a workpiece holder (11) for holding a workpiece (W) having a polygonal shape; a rotating device (15) configured to rotate the workpiece holder (11) about an axis of the workpiece (W); a pressing device (14) configured to press a periphery of the workpiece (W) against the annular polishing surface (2a); and an operation controller (25) configured to change a speed at which the rotating device (15) rotates the workpiece (W) according to a rotation angle of the workpiece (W). The pressing device (14) is disposed more inwardly than the workpiece holder (11) in a radial direction of the polishing table (3).
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: September 20, 2022
    Assignees: EBARA CORPORATION, FUJIMI INCORPORATED
    Inventors: Yu Ishii, Kenya Ito, Hitoshi Morinaga, Kazusei Tamai, Shingo Ohtsuki, Hiroshi Asano
  • Publication number: 20220234354
    Abstract: A communication plate in which are provided a first communication channel communicating with the first pressure chamber and the second pressure chamber and a first common liquid chamber communicating with the first pressure chamber and the second pressure chamber at positions different from positions at which the first communication channel communicates with the first pressure chamber and the second pressure chamber, and a nozzle substrate in which a first nozzle communicating with the first pressure chamber and the second pressure chamber in common via the first communication channel is provided. A second communication channel communicating with the first common liquid chamber and communicating with the first pressure chamber and the second pressure chamber in common is provided in the pressure chamber substrate or the communication plate.
    Type: Application
    Filed: January 25, 2022
    Publication date: July 28, 2022
    Inventors: Shotaro TAMAI, Takahiro KATAKURA, Takanori AIMONO, Yuta OKAWA, Hitoshi TAKAAI
  • Patent number: 11066509
    Abstract: A conductive paste composition includes 1 to 10 parts by weight of a binder (A), 2 to 20 parts by weight of an epoxy monomer (B), 1 to 20 parts by weight of a crosslinking agent (C), and 70 to 95 parts by weight of a conductive filler (D). The binder (A) is a reactive oligomer having a siloxane bond as a main skeleton and including a plurality of oxirane rings as an organic group. The epoxy monomer (B) includes an oxirane ring. The total amount of the binder (A), the epoxy monomer (B), the crosslinking agent (C), and the conductive filler (D) is 100 parts by weight.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: July 20, 2021
    Assignee: KANEKA CORPORATION
    Inventors: Hitoshi Tamai, Masanori Kanematsu, Daisuke Adachi
  • Publication number: 20210114967
    Abstract: A resist composition for pattern printing contains a binder, a filler, a thickener, and a polyfunctional (meth)acrylate. The resist composition does not contain a photoinitiator. The resist composition also contains photocatalytic titanium oxide. A method for forming a pattern includes a resist composition that is pattern-wise printed, and then the resist composition is irradiated with an actinic radiation such that seepage of the resist component from an end of the pattern during the pattern formation using the resist composition is suppressed and the seepage portion is decomposed. As a result, it is possible to drastically reduce the seepage without impairing the rheology of the resist composition and additionally, to remove a slightly seeping portion without requiring, for example, a harmful ozone treatment or the like.
    Type: Application
    Filed: December 28, 2020
    Publication date: April 22, 2021
    Applicant: KANEKA CORPORATION
    Inventors: Hitoshi TAMAI, Masanori KANEMATSU, Shimpei OKAMOTO
  • Publication number: 20210103216
    Abstract: A resist composition for pattern printing contains a resin (A) component that contains a combination of at least two or more types of amino group-containing resins each containing an amino group of different amine numbers respectively, the entire resin (A) component having an amine number of 1.5 to 10.0, a compound (B) component that generates an amine by means of moisture and/or light, a thickener (C) component, and a diluent (D) component. The resist composition has high resistance to an alkaline etchant, can be easily peeled off by an aqueous acid solution, and enables a protective pattern to be formed by printing.
    Type: Application
    Filed: December 17, 2020
    Publication date: April 8, 2021
    Applicant: KANEKA CORPORATION
    Inventors: Hitoshi TAMAI, Yuji TAKAHASHI, Shimpei OKAMOTO, Kunihiro NAKANO
  • Publication number: 20200135948
    Abstract: A back contact solar cell is suppressed in decrease of yield due to warp of a semiconductor substrate or short circuit of electrodes, and includes a semiconductor substrate; a semiconductor layer of a first conductivity type and a first electrode layer, sequentially laminated on a part of the back surface of the semiconductor substrate; and a semiconductor layer of a second conductivity type and a second electrode layer, sequentially laminated on another part of the back surface. Each of the first and second electrode layers comprises a base conductive layer and a plating layer covering the base conductive layer. The base conductive layer comprises a base bus bar part and a plurality of base finger parts. With respect to each one of the plurality of base finger parts, one end part and the other end part in the longitudinal direction are narrower than a middle part.
    Type: Application
    Filed: December 30, 2019
    Publication date: April 30, 2020
    Applicant: KANEKA CORPORATION
    Inventors: Masanori KANEMATSU, Hitoshi TAMAI, Daisuke ADACHI
  • Publication number: 20200095370
    Abstract: A conductive paste composition includes 1 to 10 parts by weight of a binder (A), 2 to 20 parts by weight of an epoxy monomer (B), 1 to 20 parts by weight of a crosslinking agent (C), and 70 to 95 parts by weight of a conductive filler (D). The binder (A) is a reactive oligomer having a siloxane bond as a main skeleton and including a plurality of oxirane rings as an organic group. The epoxy monomer (B) includes an oxirane ring. The total amount of the binder (A), the epoxy monomer (B), the crosslinking agent (C), and the conductive filler (D) is 100 parts by weight.
    Type: Application
    Filed: November 26, 2019
    Publication date: March 26, 2020
    Applicant: KANEKA CORPORATION
    Inventors: Hitoshi Tamai, Masanori Kanematsu, Daisuke Adachi
  • Publication number: 20200035847
    Abstract: A solar cell module includes a solar cell string in which a first solar cell and a second solar cell are arranged apart from each other along a first direction. The first and second solar cells are connected by a strip-shaped wiring member, and the solar cell string is arranged between a light-receiving-surface protection member and a back-surface protection member. The wiring member has, along the first direction, an uneven region where the first principal surface is provided with unevenness, and a flat region where the first principal surface is not provided with unevenness or is provided with unevenness that is smaller in height than the uneven region. The uneven region extends from the light-receiving surface of the second solar cell to the back surface of the first solar cell.
    Type: Application
    Filed: September 30, 2019
    Publication date: January 30, 2020
    Applicant: KANEKA CORPORATION
    Inventors: Toru Terashita, Daisuke Adachi, Takashi Suezaki, Hitoshi Tamai
  • Patent number: 10373732
    Abstract: A transparent electrode film includes a transparent electrode disposed on a transparent film base, wherein the transparent electrode contains a transparent conductive layer and a conductive metal pattern layer. The conductive metal pattern layer is patterned in the in-plane direction of the transparent film base. The transparent conductive layer and a protecting layer are disposed in a region where the conductive metal pattern layer is provided, and the conductive metal pattern layer is disposed closer to the transparent film base than the transparent conductive layer and the protecting layer. The protecting layer includes at least one selected from the group consisting of a precious metal and a metal oxide. The transparent electroconductive layer is also disposed at opening sections where the electroconductive metal pattern layer is absent.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: August 6, 2019
    Assignee: Kaneka Corporation
    Inventors: Shimpei Okamoto, Junichi Nakamura, Yuji Takahashi, Takahisa Fujimoto, Takayoshi Kushizaki, Hitoshi Tamai
  • Patent number: 10353497
    Abstract: The present invention provides a substrate with conductive layers, capable of improving both glare preventing properties and etching characteristics; a method for fabricating the same; and a substrate with touch-panel transparent electrodes. A substrate with conductive layers has, on at least one side of a transparent film substrate, a thin film underlayer, a metal oxide layer, and a first metal layer formed in this order. The thin film underlayer comprises nickel and copper or nickel oxide and copper oxide, the metal oxide layer comprises nickel oxide and copper oxide, and the first metal layer comprises of at least one of gold, silver, and copper. The substrate preferably satisfies the following relational expressions: [1] the thickness of the thin film underlayer is 20 nm or less; [2] the thickness of the metal oxide layer is 80 nm or less; and [3] the thickness of the thin film underlayer is equal to or less than the thickness of the metal oxide layer.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: July 16, 2019
    Assignee: Kaneka Corporation
    Inventors: Takahisa Fujimoto, Hitoshi Tamai, Kenji Yamamoto
  • Publication number: 20180204651
    Abstract: A transparent electrode film includes a transparent electrode disposed on a transparent film base, wherein the transparent electrode contains a transparent conductive layer and a conductive metal pattern layer. The conductive metal pattern layer is patterned in the in-plane direction of the transparent film base. The transparent conductive layer and a protecting layer are disposed in a region where the conductive metal pattern layer is provided, and the conductive metal pattern layer is disposed closer to the transparent film base than the transparent conductive layer and the protecting layer. The protecting layer includes at least one selected from the group consisting of a precious metal and a metal oxide. The transparent electroconductive layer is also disposed at opening sections where the electroconductive metal pattern layer is absent.
    Type: Application
    Filed: July 13, 2016
    Publication date: July 19, 2018
    Applicant: Kaneka Corporation
    Inventors: Shimpei Okamoto, Junichi Nakamura, Yuji Takahashi, Takahisa Fujimoto, Takayoshi Kushizaki, Hitoshi Tamai
  • Publication number: 20180032167
    Abstract: The present invention provides a substrate with conductive layers, capable of improving both glare preventing properties and etching characteristics; a method for fabricating the same; and a substrate with touch-panel transparent electrodes. A substrate with conductive layers has, on at least one side of a transparent film substrate, a thin film underlayer, a metal oxide layer, and a first metal layer formed in this order. The thin film underlayer comprises nickel and copper or nickel oxide and copper oxide, the metal oxide layer comprises nickel oxide and copper oxide, and the first metal layer comprises of at least one of gold, silver, and copper. The substrate preferably satisfies, the following relational expressions: [1] the thickness of the thin film underlayer is 20 nm or less; [2] the thickness of the metal oxide layer is 80 nm or less; and [3] the thickness of the thin film underlayer is equal to or less than the thickness of the metal oxide layer.
    Type: Application
    Filed: February 18, 2016
    Publication date: February 1, 2018
    Applicant: Kaneka Corporation
    Inventors: Takahisa Fujimoto, Hitoshi Tamai, Kenji Yamamoto
  • Publication number: 20170199599
    Abstract: Provided is a capacitive touch panel having increased sensitivity for non-contact operation, while maintaining high resolution for contact operation. This capacitive touch panel (1) comprises one or more transparent film substrates (2, 5), multiple first-direction electrodes (X) arranged on the film substrates (2, 5) and extending in a first direction (the left/right direction), and multiple second-direction electrodes (Y) arranged on the film substrates and extending in a second direction (the up/down direction) intersecting the first direction. This capacitive touch panel is characterized in that each of the first-direction electrodes (X) and the second-direction electrodes (Y) comprise multiple fine wires (30, 40) of a conductive material, and that at least one transparent electrically conducting film electrode (6) is provided for detecting non-contact operation.
    Type: Application
    Filed: March 29, 2017
    Publication date: July 13, 2017
    Applicant: Kaneka Corporation
    Inventors: Yuji Takahashi, Hitoshi Tamai
  • Patent number: 8389630
    Abstract: Provided is a curable composition excellent in curability and mechanical properties as well as a cured product thereof. Specially provided is a curable composition containing a vinyl-based polymer (I) having one or more crosslinkable functional groups at a terminus on average and a nucleophilic agent (II) and a cured product obtained by curing the curable composition. Preferably, the curable composition of the invention further contains an epoxy resin (III).
    Type: Grant
    Filed: December 27, 2006
    Date of Patent: March 5, 2013
    Assignee: Kaneka Corporation
    Inventors: Hitoshi Tamai, Kohei Ogawa, Yoshiki Nakagawa
  • Patent number: 8067498
    Abstract: The present invention has its object to provide a transparent curable composition which may be prepared as a one package formulation, and which is excellent in strength, elongation at break, weather resistance, and adhesiveness of the resultant cured product. In addition, the present invention provides a curable composition which comprises 100 parts by weight of a vinyl polymer (I) the main chain of which is the product of living radical polymerization and which contains a crosslinkable silyl group, and 1 to 200 parts by weight of a micronized hydrophobic silica (II). Furthermore, the present invention also provides a curable composition which comprises 100 parts by weight of a vinyl polymer (I) the main chain of which is the product of living radical polymerization and which contains at least one crosslinkable silyl group, and 1 to 200 parts by weight of a graft copolymer (III) obtained by graft polymerization of a crosslinkable rubber-like acrylic ester polymer and a vinyl monomer.
    Type: Grant
    Filed: April 4, 2005
    Date of Patent: November 29, 2011
    Assignee: Kaneka Corporation
    Inventors: Ayako Yano, Hitoshi Tamai
  • Publication number: 20110009517
    Abstract: An object of the present invention is to provide an active-energy-curable composition having an appropriate adhesive property onto a substrate and an excellent curability, and a cured product thereof. The object is solved by a curable composition comprising: (a) a vinyl polymer having, in any single molecule thereof, at least one group represented by the following general formula (1) at a molecular terminal thereof: —OC(O)C(R)?CH2 ??(1) wherein R represents hydrogen or an organic group having 1 to 20 carbon atoms; and (b) a vinyl monomer having a phosphate group.
    Type: Application
    Filed: February 19, 2009
    Publication date: January 13, 2011
    Applicant: KANEKA CORPORATION
    Inventors: Hitoshi Tamai, Yoshiki Nakagawa
  • Patent number: 7807746
    Abstract: The present invention provides a curable composition capable of giving rubbery cured products having excellent adhesion properties to all-purpose substrates, improved weather-resistant adhesion properties to photocatalyst-coated transparent adherends, low modulus and high elongation and, further, showing high weather resistance without undergoing surface cracking or discoloration even when used outdoors for a long period of time. The curable composition of the present invention includes a vinyl polymer (I) and an antioxidant (II). A main chain of the vinyl polymer (I) is a product of living radical polymerization, and the vinyl polymer (I) contains at least one crosslinkable silyl group.
    Type: Grant
    Filed: January 20, 2005
    Date of Patent: October 5, 2010
    Assignee: Kaneka Corporation
    Inventors: Hitoshi Tamai, Ayako Yano
  • Publication number: 20100227949
    Abstract: Provided is a curable composition excellent in curability and mechanical properties as well as a cured product thereof. Specially provided is a curable composition containing a vinyl-based polymer (I) having one or more crosslinkable functional groups at a terminus on average and a nucleophilic agent (II) and a cured product obtained by curing the curable composition. Preferably, the curable composition of the invention further contains an epoxy resin (III).
    Type: Application
    Filed: December 27, 2006
    Publication date: September 9, 2010
    Applicant: KANEKA CORPORATION
    Inventors: Hitoshi Tamai, Kohei Ogawa, Yoshiki Nakagawa
  • Publication number: 20100222520
    Abstract: Disclosed is a curable composition having low viscosity, which is capable of forming a cured product that is excellent in heat resistance, weather resistance, oil resistance and the like, while having rubber elasticity. Specifically disclosed is a curable composition for both thermal radical curing and latent thermal curing with epoxy essentially containing the following components (A) and (B). (A) a vinyl-based polymer having two or more groups represented by the general formula (1): —OC(O)C(Ra)?CH2??(1) wherein Ra represents a hydrogen atom or an organic group having 1 to 20 carbon atoms, per molecule, and having one or more groups represented by the above general formula (1) at a molecular terminal; (B) an epoxy compound.
    Type: Application
    Filed: December 27, 2006
    Publication date: September 2, 2010
    Applicant: KANEKA CORPORATION
    Inventors: Hitoshi Tamai, Kohei Ogawa, Yoshiki Nakagawa