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).
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Patent number: 11066509Abstract: 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: GrantFiled: November 26, 2019Date of Patent: July 20, 2021Assignee: KANEKA CORPORATIONInventors: Hitoshi Tamai, Masanori Kanematsu, Daisuke Adachi
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Publication number: 20210114967Abstract: 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: ApplicationFiled: December 28, 2020Publication date: April 22, 2021Applicant: KANEKA CORPORATIONInventors: Hitoshi TAMAI, Masanori KANEMATSU, Shimpei OKAMOTO
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Publication number: 20210103216Abstract: 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: ApplicationFiled: December 17, 2020Publication date: April 8, 2021Applicant: KANEKA CORPORATIONInventors: Hitoshi TAMAI, Yuji TAKAHASHI, Shimpei OKAMOTO, Kunihiro NAKANO
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Publication number: 20200135948Abstract: 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: ApplicationFiled: December 30, 2019Publication date: April 30, 2020Applicant: KANEKA CORPORATIONInventors: Masanori KANEMATSU, Hitoshi TAMAI, Daisuke ADACHI
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Publication number: 20200095370Abstract: 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: ApplicationFiled: November 26, 2019Publication date: March 26, 2020Applicant: KANEKA CORPORATIONInventors: Hitoshi Tamai, Masanori Kanematsu, Daisuke Adachi
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Publication number: 20200035847Abstract: 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: ApplicationFiled: September 30, 2019Publication date: January 30, 2020Applicant: KANEKA CORPORATIONInventors: Toru Terashita, Daisuke Adachi, Takashi Suezaki, Hitoshi Tamai
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Transparent electrode film, dimming element, and method for manufacturing transparent electrode film
Patent number: 10373732Abstract: 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: GrantFiled: July 13, 2016Date of Patent: August 6, 2019Assignee: Kaneka CorporationInventors: Shimpei Okamoto, Junichi Nakamura, Yuji Takahashi, Takahisa Fujimoto, Takayoshi Kushizaki, Hitoshi Tamai -
Patent number: 10353497Abstract: 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: GrantFiled: February 18, 2016Date of Patent: July 16, 2019Assignee: Kaneka CorporationInventors: Takahisa Fujimoto, Hitoshi Tamai, Kenji Yamamoto
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TRANSPARENT ELECTRODE FILM, DIMMING ELEMENT, AND METHOD FOR MANUFACTURING TRANSPARENT ELECTRODE FILM
Publication number: 20180204651Abstract: 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: ApplicationFiled: July 13, 2016Publication date: July 19, 2018Applicant: Kaneka CorporationInventors: Shimpei Okamoto, Junichi Nakamura, Yuji Takahashi, Takahisa Fujimoto, Takayoshi Kushizaki, Hitoshi Tamai -
Publication number: 20180032167Abstract: 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: ApplicationFiled: February 18, 2016Publication date: February 1, 2018Applicant: Kaneka CorporationInventors: Takahisa Fujimoto, Hitoshi Tamai, Kenji Yamamoto
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Publication number: 20170199599Abstract: 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: ApplicationFiled: March 29, 2017Publication date: July 13, 2017Applicant: Kaneka CorporationInventors: Yuji Takahashi, Hitoshi Tamai
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Patent number: 8389630Abstract: 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: GrantFiled: December 27, 2006Date of Patent: March 5, 2013Assignee: Kaneka CorporationInventors: Hitoshi Tamai, Kohei Ogawa, Yoshiki Nakagawa
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Patent number: 8067498Abstract: 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: GrantFiled: April 4, 2005Date of Patent: November 29, 2011Assignee: Kaneka CorporationInventors: Ayako Yano, Hitoshi Tamai
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Publication number: 20110009517Abstract: 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: ApplicationFiled: February 19, 2009Publication date: January 13, 2011Applicant: KANEKA CORPORATIONInventors: Hitoshi Tamai, Yoshiki Nakagawa
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Patent number: 7807746Abstract: 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: GrantFiled: January 20, 2005Date of Patent: October 5, 2010Assignee: Kaneka CorporationInventors: Hitoshi Tamai, Ayako Yano
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Publication number: 20100227949Abstract: 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: ApplicationFiled: December 27, 2006Publication date: September 9, 2010Applicant: KANEKA CORPORATIONInventors: Hitoshi Tamai, Kohei Ogawa, Yoshiki Nakagawa
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Publication number: 20100222446Abstract: Disclosed is a curable composition having excellent curability, 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 and high mechanical strength. Specifically disclosed is a curable composition for both photoradical and thermal radical curing essentially containing the following components (A), (B), and (C). (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) a photoradical initiator; and (C) a thermal radical initiator, as essential components.Type: ApplicationFiled: December 27, 2006Publication date: September 2, 2010Applicant: KANEKA CORPORATIONInventors: Hitoshi Tamai, Kohei Ogawa, Yoshiki Nakagawa
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Publication number: 20100222520Abstract: 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: ApplicationFiled: December 27, 2006Publication date: September 2, 2010Applicant: KANEKA CORPORATIONInventors: Hitoshi Tamai, Kohei Ogawa, Yoshiki Nakagawa
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Publication number: 20090292075Abstract: Provided is a curable composition for damping materials excellent in heat resistance, oil resistance and damping property, as well as a damping material obtained therefrom. Specially provided is a curable composition for damping materials, containing a vinyl-based polymer (I) having more than one crosslinkable functional groups on average and having at least one of the crosslinkable functional groups at the terminus thereof, and a vinyl-based polymer (II) having one or less crosslinkable functional group on average, wherein the content of the vinyl-based polymer (II) is 50 to 95 parts by weight based on 100 parts by weight of the vinyl-based polymers (I) and (II), as well as a damping material obtained by curing the curable composition.Type: ApplicationFiled: December 12, 2006Publication date: November 26, 2009Applicant: KANEKA CORPORATIONInventors: Hitoshi Tamai, Kohei Ogawa, Yoshiki Nakagawa
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Publication number: 20090234072Abstract: The present invention has its object to provide a crosslinkable silyl group-terminated vinyl polymer-containing curable composition which secures a sufficiently long pot life and, at the same time, can be cured rapidly on the occasion of need and can give cured products excellent in thermal stability, oil resistance, weathering resistance, mechanical properties and adhesiveness, among others. The present invention provides a curable composition containing (I) and (II) mentioned in the following: a vinyl polymer (I) having, on an average, at least one crosslinkable silyl group at its termini, and a photo acid generator (II). The vinyl polymer (I) according to the present invention is preferably a (meth)acrylic polymer.Type: ApplicationFiled: September 6, 2006Publication date: September 17, 2009Applicant: Kaneka CorporationInventors: Yoshiki Nakagawa, Kohei Ogawa, Hitoshi Tamai