Patents by Inventor Noriaki Nakamura

Noriaki Nakamura 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: 11864325
    Abstract: The present invention relates to a method for forming a metal pattern on a pattern formation section set on a base material. In the present invention, a substrate provided with a fluorine-containing resin layer on a surface of the base material including the pattern formation section is used. The present inventive method for forming a metal pattern includes steps of: forming a functional group on the pattern formation section; and applying a metal ink including an amine compound and a fatty acid as protective agents to the base material surface to fix the metal particles on the pattern formation section. In the present invention, a fluorine-containing resin having a surface free energy measured by the Owens-Wendt method of 13 mN/m or more and 20 mN/m or less is applied as the fluorine-containing resin layer. Further, a metal ink including ethyl cellulose as an additive is applied as the metal ink.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: January 2, 2024
    Assignee: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Kenjiro Koshiji, Yuichi Makita, Noriaki Nakamura, Masato Kasuga, Yuusuke Ohshima, Hiroki Sato, Shigeyuki Ootake, Hitoshi Kubo
  • Publication number: 20220248538
    Abstract: The present invention relates to a method for forming a metal pattern on a pattern formation section set on a base material. In the present invention, a substrate provided with a fluorine-containing resin layer on a surface of the base material including the pattern formation section is used. The present inventive method for forming a metal pattern includes steps of: forming a functional group on the pattern formation section; and applying a metal ink including an amine compound and a fatty acid as protective agents to the base material surface to fix the metal particles on the pattern formation section. In the present invention, a fluorine-containing resin having a surface free energy measured by the Owens-Wendt method of 13 mN/m or more and 20 mN/m or less is applied as the fluorine-containing resin layer. Further, a metal ink including ethyl cellulose as an additive is applied as the metal ink.
    Type: Application
    Filed: June 18, 2020
    Publication date: August 4, 2022
    Applicant: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Kenjiro KOSHIJI, Yuichi MAKITA, Noriaki NAKAMURA, Masato KASUGA, Yuusuke OHSHIMA, Hiroki SATO, Shigeyuki OOTAKE, Hitoshi KUBO
  • Publication number: 20220015232
    Abstract: An electroconductive substrate including a base material and a metal wiring made of at least either of silver and copper, and the electroconductive substrate has an antireflection region formed on part or all of the metal wiring surface. This antireflection region is composed of roughened particles made of at least either of silver and copper and blackened particles finer than the roughened particles and embedded between the roughened particles. The blackened particles are made of silver or a silver compound, copper or a copper compound, or carbon or an organic substance having a carbon content of 25 wt % or more. The antireflection region has a surface with a center line average roughness of 15 nm or more and 70 nm or less. The electroconductive substrate is formed from metal wiring from a metal ink that forms roughened particles, followed by application of a blackening ink containing blackened particles.
    Type: Application
    Filed: November 13, 2019
    Publication date: January 13, 2022
    Applicant: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Kenjiro KOSHIJI, Yuichi MAKITA, Noriaki NAKAMURA, Masato KASUGA, Yuusuke OHSHIMA, Hiroki SATO, Hitoshi KUBO
  • Publication number: 20210324218
    Abstract: A silver ink including silver particles and a protective agent containing at least one amine compound dispersed in a dispersion medium containing, as a main solvent, a solvent having a vapor pressure at 20° C. of 40 mmHg or less and a vapor pressure at 70° C. of 0.09 mmHg or more, in an amount of 80% or more on a mass basis relative to the total dispersion medium. The amine compound has a mass average molecular weight of 115 or less, and the total amount of the amine compound is 1 part by weight or more and 14 parts by weight or less per 100 parts by weight of the silver particles. The silver ink has a moisture content of 500 ppm or more and 50,000 ppm or less and enables a practical metal film to be formed even through calcination at a low temperature of 70° C. or less.
    Type: Application
    Filed: August 15, 2019
    Publication date: October 21, 2021
    Applicant: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Yuusuke OHSHIMA, Yuichi MAKITA, Hiroki SATO, Noriaki NAKAMURA, Kenjiro KOSHIJI, Masato KASUGA, Hitoshi KUBO
  • Patent number: 10486235
    Abstract: The present invention provides a method for producing silver particles, including the steps of: mixing a thermally decomposable silver compound and an amine compound to prepare a silver-amine complex as a precursor; and heating the silver-amine complex at a heating temperature equal to or higher than the decomposition temperature of the silver-amine complex to precipitate silver particles, the silver compound being silver carbonate, the amine compound being terminated with a primary amino group on at least one end and containing a predetermined hydrocarbon group R with a carbon number of 4 to 10. In the method of the present invention, silver particles with the particle size controlled to fall within the range of 20 nm to 200 nm in terms of an average particle size can be produced.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: November 26, 2019
    Assignee: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Yuichi Makita, Yuusuke Ohshima, Hidekazu Matsuda, Junichi Taniuchi, Noriaki Nakamura, Hitoshi Kubo
  • Patent number: 10220377
    Abstract: The present invention is a metal colloid solution comprising: colloidal particles consisting of metal particles consisting of one or two or more metal(s) and a protective agent bonding to the metal particles; and a solvent as a dispersion medium of the colloidal particles, wherein: a chloride ion concentration per a metal concentration of 1 mass % is 25 ppm or less; and a nitrate ion concentration per a metal concentration of 1 mass % is 7500 ppm or less. In the present invention, adsorption performance can be improved with adjustment of the amount of the protective agent of the colloidal particles. It is preferable to bind the protective agent of 0.2 to 2.5 times the mass of the metal particles.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: March 5, 2019
    Assignee: TANAKA KIKINZOKU KOGOY K.K.
    Inventors: Yuusuke Ohshima, Hitoshi Kubo, Tomoko Ishikawa, Noriaki Nakamura, Junichi Taniuchi, Yoshiteru Tsuchiya, Hiroaki Takahashi, Hidenori Takanezawa, Kenichi Inoue, Syunsuke Kato, Hirokazu Shiraishi
  • Patent number: 9901985
    Abstract: The present invention provides a method for producing silver particles, the method capable of adjusting the particle diameter to be within the range of several tens of nanometers to several hundreds of nanometers and also producing silver particles with a uniform particle diameter. The present invention relates to a method for producing silver particles by heating of a reaction system containing a thermally-decomposable silver-amine complex precursor, including a process of producing a silver-amine complex, a process of adding an organic compound having an amide (carboxylic amide) as a skeleton to a reaction system, and a process of heating the reaction system, in which a water content in the reaction system before the heating is 20 to 100 parts by weight relative to 100 parts by weight of the silver compound. The present invention can produce uniform silver particles while the particle diameter is controlled.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: February 27, 2018
    Assignee: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Yuichi Makita, Yuusuke Ohshima, Hidekazu Matsuda, Noriaki Nakamura, Junichi Taniuchi, Hitoshi Kubo
  • Publication number: 20170215279
    Abstract: Provided are a fine silver particle ink composed of hexylamine, dodecylamine, oleic acid, fine silver particles and a solvent, in which the volume resistivity of a sintered body at 100° C. obtained after the ink is applied on a substrate by spin coating is 8 to 25 ?? cm, a sintered body thereof, and a method for producing a fine silver particle ink. When a fine silver particle ink containing coated fine silver particles is produced by a silver-amine complex decomposition method, production can be carried out smoothly. The fine silver particle ink can be sintered even at a low temperature, and a sintered body thereof has a mirror surface and low volume resistance.
    Type: Application
    Filed: March 2, 2017
    Publication date: July 27, 2017
    Inventors: Hitoshi Kubo, Yusuke Ohshima, Noriaki Nakamura, Hiroshi Noguchi, Junichi Taniuchi, Yuichi Makita
  • Patent number: 9670294
    Abstract: A method for producing a solid catalyst component for olefin polymerization produces a novel solid catalyst component for olefin polymerization that achieves excellent olefin polymerization activity and activity with respect to hydrogen during polymerization, and can produce an olefin polymer that exhibits a high MFR, high stereoregularity, and excellent rigidity.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: June 6, 2017
    Assignee: TOHO TITANIUM CO., LTD.
    Inventors: Motoki Hosaka, Noriaki Nakamura, Toshihiko Sugano
  • Patent number: 9674953
    Abstract: Provided are a fine silver particle ink composed of hexylamine, dodecylamine, oleic acid, fine silver particles and a solvent, in which the volume resistivity of a sintered body at 100° C. obtained after the ink is applied on a substrate by spin coating is 8 to 25 ??cm, a sintered body thereof, and a method for producing a fine silver particle ink. When a fine silver particle ink containing coated fine silver particles is produced by a silver-amine complex decomposition method, production can be carried out smoothly. The fine silver particle ink can be sintered even at a low temperature, and a sintered body thereof has a mirror surface and low volume resistance.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: June 6, 2017
    Assignee: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Hitoshi Kubo, Yusuke Ohshima, Noriaki Nakamura, Hiroshi Noguchi, Junichi Taniuchi, Yuichi Makita
  • Patent number: 9593188
    Abstract: A method produces a novel solid catalyst component for olefin polymerization that achieves excellent olefin polymerization activity and activity with respect to hydrogen during polymerization, and can produce an olefin polymer that exhibits a high MFR, high stereoregularity, and excellent rigidity. The method includes a first step that brings a magnesium compound, a tetravalent titanium halide compound, and one or more first internal electron donor compounds into contact with each other to effect a reaction, followed by washing; a second step that brings one or more second internal electron donor compounds into contact with a product obtained by the first step to effect a reaction; and a third step that brings a tetravalent titanium halide compound and one or more third internal electron donor compounds into contact with a product obtained by the second step to effect a reaction.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: March 14, 2017
    Assignee: TOHO TITANIUM CO., LTD.
    Inventors: Motoki Hosaka, Noriaki Nakamura, Shingo Yamada, Toshihiko Sugano
  • Patent number: 9587050
    Abstract: A method for producing a solid catalyst component for olefin polymerization produces a novel solid catalyst component for olefin polymerization that achieves excellent olefin polymerization activity and activity with respect to hydrogen during polymerization, and can produce an olefin polymer that exhibits a high MFR, high stereoregularity, and excellent rigidity.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: March 7, 2017
    Assignee: TOHO TITANIUM CO., LTD.
    Inventors: Motoki Hosaka, Noriaki Nakamura, Shingo Yamada, Toshihiko Sugano
  • Patent number: 9565776
    Abstract: The present invention provides a method for treating a substrate that supports metal fine particles for forming a plating layer on a circuit pattern or TSVs in various substrates, in which further micronization treatment is enabled compared with the conventional methods, and the formation of a stable plating layer is enabled. The present invention is a method for treating a substrate, the method including bringing a substrate into contact with a colloidal solution containing metal particles in order to support the metal particles that serve as a catalyst for forming a plating layer on the substrate, in which the colloidal solution contains metal particles formed of Pd and having a particle size of 0.6 nm to 4.0 nm and a face-to-face dimension of the (111) plane of 2.254 ? or more. When an organic layer such as SAM is formed on a surface of the substrate before this treatment, the binding force of the Pd particles can be increased.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: February 7, 2017
    Assignee: Tanaka Kikinzoku Kogyo K.K.
    Inventors: Noriaki Nakamura, Junichi Taniuchi, Hitoshi Kubo, Yuusuke Ohshima, Tomoko Ishikawa, Shoso Shingubara, Fumihiro Inoue
  • Publication number: 20160303659
    Abstract: The present invention provides a method for producing silver particles, including the steps of: mixing a thermally decomposable silver compound and an amine compound to prepare a silver-amine complex as a precursor; and heating the silver-amine complex at a heating temperature equal to or higher than the decomposition temperature of the silver-amine complex to precipitate silver particles, the silver compound being silver carbonate, the amine compound being terminated with a primary amino group on at least one end and containing a predetermined hydrocarbon group R with a carbon number of 4 to 10. In the method of the present invention, silver particles with the particle size controlled to fall within the range of 20 nm to 200 nm in terms of an average particle size can be produced.
    Type: Application
    Filed: December 11, 2014
    Publication date: October 20, 2016
    Applicant: Tanka Kikinzoku Kogyo K.K.
    Inventors: Yuichi MAKITA, Yuusuke OHSHIMA, Hidekazu MATSUDA, Junichi TANIUCHI, Noriaki NAKAMURA, Hitoshi KUBO
  • Publication number: 20160121404
    Abstract: The present invention provides a method for producing silver particles, the method capable of adjusting the particle diameter to be within the range of several tens of nanometers to several hundreds of nanometers and also producing silver particles with a uniform particle diameter. The present invention relates to a method for producing silver particles by heating of a reaction system containing a thermally-decomposable silver-amine complex precursor, including a process of producing a silver-amine complex, a process of adding an organic compound having an amide (carboxylic amide) as a skeleton to a reaction system, and a process of heating the reaction system, in which a water content in the reaction system before the heating is 20 to 100 parts by weight relative to 100 parts by weight of the silver compound. The present invention can produce uniform silver particles while the particle diameter is controlled.
    Type: Application
    Filed: May 20, 2014
    Publication date: May 5, 2016
    Applicant: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Yuichi MAKITA, Yuusuke OHSHIMA, Hidekazu MATSUDA, Noriaki NAKAMURA, Junichi TANIUCHI, Hitoshi KUBO
  • Patent number: 9243081
    Abstract: A solid catalyst component for olefin polymerization includes titanium, magnesium, a halogen, and a compound represented by the following formula (1): R1O—C(?O)—O—Z—OR2, and an olefin polymerization catalyst includes the solid catalyst component, an organoaluminum compound, and an optional external electron donor compound. An olefin polymer that has a moderate molecular weight distribution while maintaining high stereoregularity can be produced by utilizing the solid catalyst component and the olefin polymerization catalyst.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: January 26, 2016
    Assignee: TOHO TITANIUM CO., LTD.
    Inventors: Toshihiko Sugano, Toshiya Uozumi, Noriaki Nakamura
  • Patent number: 9206273
    Abstract: A solid catalyst component for olefin polymerization includes titanium, magnesium, a halogen, a compound represented by (R1)kC6H4-k(COOR2)(COOR3), and a compound represented by R4O—C(?O)—O—Z—OR5. The solid catalyst component is a novel solid catalyst component for olefin polymerization that achieves excellent olefin polymerization activity and activity with respect to hydrogen during polymerization, and can produce an olefin polymer that exhibits a high MFR, high stereoregularity, and excellent rigidity.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: December 8, 2015
    Assignee: TOHO TITANIUM CO., LTD.
    Inventors: Motoki Hosaka, Noriaki Nakamura, Toshihiko Sugano
  • Patent number: 9206265
    Abstract: An olefin polymer that is obtained using an olefin polymerization catalyst that includes a solid catalyst component for olefin polymerization that includes titanium, magnesium, a halogen, and an ester compound (A) represented by the following formula (1): R1R2C?C(COOR3)(COOR4), an organoaluminum compound, and an optional external electron donor compound, exhibits primary properties (e.g., molecular weight distribution and stereoregularity) similar to those of an olefin polymer obtained using a solid catalyst component that includes a phthalic ester as an electron donor.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: December 8, 2015
    Assignee: TOHO TITANIUM CO., LTD.
    Inventors: Toshiya Uozumi, Shingo Yamada, Noriaki Nakamura, Koichiro Hisano, Motoki Hosaka, Toshihiko Sugano
  • Publication number: 20150240003
    Abstract: A solid catalyst component for olefin polymerization includes titanium, magnesium, a halogen, a compound represented by (R1)kC6H4-k(COOR2)(COOR3), and a compound represented by R4O—C(?O)—O—Z—OR5. The solid catalyst component is a novel solid catalyst component for olefin polymerization that achieves excellent olefin polymerization activity and activity with respect to hydrogen during polymerization, and can produce an olefin polymer that exhibits a high MFR, high stereoregularity, and excellent rigidity.
    Type: Application
    Filed: February 7, 2014
    Publication date: August 27, 2015
    Applicant: TOHO TITANIUM CO., LTD.
    Inventors: Motoki Hosaka, Noriaki Nakamura, Toshihiko Sugano
  • Publication number: 20150240002
    Abstract: A method for producing a solid catalyst component for olefin polymerization produces a novel solid catalyst component for olefin polymerization that achieves excellent olefin polymerization activity and activity with respect to hydrogen during polymerization, and can produce an olefin polymer that exhibits a high MFR, high stereoregularity, and excellent rigidity.
    Type: Application
    Filed: February 13, 2014
    Publication date: August 27, 2015
    Applicant: TOHO TITANIUM CO., LTD.
    Inventors: Motoki Hosaka, Noriaki Nakamura, Shingo Yamada, Toshihiko Sugano