Patents by Inventor Wataru Fujikawa

Wataru Fujikawa 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: 20220363852
    Abstract: A laminate that includes a substrate made of a polyolefin-based resin and is excellent in adhesion between the substrate and a metal plating layer is provided in a simple manner without roughening the surface of the substrate. In addition, a molded article, a printed wring board, and an electromagnetic wave shield using the laminate using the same are provided. Used is a laminate configured such that on a substrate (A) made of a polyolefin-based resin (a), a primer layer (B) containing a polyolefin-based resin (b) that is organic solvent soluble or water dispersible, a metal particle layer (C), and a metal plating layer (D) are sequentially laminated.
    Type: Application
    Filed: September 17, 2020
    Publication date: November 17, 2022
    Applicant: DIC Corporation
    Inventors: Wataru Fujikawa, Akihiro Iwamoto, Jun Shirakami
  • Patent number: 10470312
    Abstract: There is provided a method for forming an electrically conductive ultrafine pattern which has an excellent pattern cross-sectional shape is provided by a composite technique including a printing process and a plating process, and furthermore, by imparting excellent adhesion to each interface of a laminate including a plating core pattern, an electrically conductive ultrafine pattern which can be preferably used as a highly accurate electric circuit and a method for manufacturing the same are also provided. The method includes (1) a step of applying a resin composition to form a receiving layer on a substrate; (2) a step of printing an ink containing plating core particles by a reverse offset printing method to form a plating core pattern on the receiving layer; and (3) a step of depositing a metal on the plating core pattern formed in the step (2) by an electrolytic plating method.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: November 5, 2019
    Assignee: DIC CORPORATION (TOKYO)
    Inventors: Sunao Yoshihara, Haruhiko Katsuta, Yoshinori Katayama, Jun Shirakami, Akira Murakawa, Wataru Fujikawa, Yukie Saitou
  • Publication number: 20190070631
    Abstract: Provided is a method for producing a laminate in which a substrate (A) comprising a resin composition containing polyphenylene sulfide (a1), a primer resin layer (B), a metal layer (C), and a metal plating layer (D) are sequentially stacked, wherein the method is characterized by comprising: a first step of applying a fluid material containing a primer resin to the surface of the substrate (A) by an immersion method to form a primer resin layer (B); a second step of applying a fluid material containing metal particles to the surface of the primer resin layer (B) by an immersion method to form a metal layer (C); and a third step of forming a metal plating layer (D) on the surface of the metal layer (C) by an electroplating method, an electroless plating method, or a combination thereof. By the method for producing a laminate, a metal film can be easily formed with high adhesion on the surface of polyphenylene sulfide, which is a hard-to-bond base material.
    Type: Application
    Filed: March 7, 2017
    Publication date: March 7, 2019
    Inventors: Wataru FUJIKAWA, Jun SHIRAKAMI, Norimasa FUKAZAWA
  • Publication number: 20180206368
    Abstract: An object to be achieved by the present invention is to provide a conductive pattern having such a level of adhesion that a conductive layer containing a conductive substance such as silver does not separate from a primer layer with time. The present invention relates to a conductive pattern including a conductive layer (A) containing a compound (a1) having a basic nitrogen atom-containing group and a conductive substance (a2); a primer layer (B) containing a compound (b1) having a functional group [X]; and a substrate layer (C), the conductive layer (A), the primer layer (B), and the substrate layer (C) being stacked, in which a bond is formed by reacting the basic nitrogen atom-containing group of the compound (a1) contained in the conductive layer (A) with the functional group [X] of the compound (b1) contained in the primer layer (B).
    Type: Application
    Filed: March 12, 2018
    Publication date: July 19, 2018
    Inventors: Akira MURAKAWA, Jun SHIRAKAMI, Wataru FUJIKAWA, Yukie SAITOU
  • Publication number: 20180162106
    Abstract: The present invention provides a laminated body including a support (A) that includes a polyphenylene sulfide resin composition containing a polyphenylene sulfide (a1) and an elastomer (a2), and a metal layer (B) and a metal-plating layer (C) that are laminated on the support (A) in this order, wherein the elastomer (a2) is contained in the polyphenylene sulfide resin composition in an amount in the range of 0.3 to 90 parts by mass relative to 100 parts by mass of the polyphenylene sulfide (a1). The laminated body is excellent in adhesiveness between the polyphenylene sulfide as the support and the metal-plating layer, and also has a thermal resistance so as to maintain the excellent adhesiveness even when exposed to a high-temperature environment.
    Type: Application
    Filed: June 23, 2016
    Publication date: June 14, 2018
    Inventors: Wataru FUJIKAWA, Jun SHIRAKAMI, Akira MURAKAWA, Taku SHIMAYA
  • Patent number: 9650522
    Abstract: The present invention provides an absorbing-layer-forming composition including a blocked isocyanate such that the amount of the blocked isocyanate is 50% by mass to 100% by mass of the solid content of the absorbing-layer-forming composition and an absorbing substrate, a printed item, and a conductive pattern that are formed using the absorbing-layer-forming composition. The absorbing-layer-forming composition according to the present invention can be used for forming an absorbing layer which is capable of carrying a fluid such as an ink therein and which enables good adhesion between various types of supports and a conductive layer to be achieved. In particular, using a blocked isocyanate having a number-average molecular weight of 1,000 to 5,000 further increases the adhesion between various types of supports and the conductive layer.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: May 16, 2017
    Assignee: DIC Corporation
    Inventors: Wataru Fujikawa, Jun Shirakami, Akira Murakawa, Yukie Saitou
  • Patent number: 9629253
    Abstract: Provided are a method for forming a high-definition metal pattern which including the steps of (1) forming a receiving layer on a substrate by coating the substrate with a resin composition including a urethane resin having a weight-average molecular weight of five thousand or more or a vinyl resin and a medium, (2) forming a plating-core pattern on the receiving layer by printing an ink including a particle that serves as a plating core on the receiving layer by reverse offset printing, and (3) depositing a metal on the plating-core pattern by electroless plating, a high-definition metal pattern formed by the above-described method, and an electronic component including the high-definition metal pattern.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: April 18, 2017
    Assignee: DIC Corporation
    Inventors: Sunao Yoshihara, Haruhiko Katsuta, Yoshinori Katayama, Jun Shirakami, Akira Murakawa, Wataru Fujikawa, Yukie Saitou
  • Publication number: 20160198594
    Abstract: An object to be achieved by the present invention is to provide a conductive pattern having such a level of adhesion that a conductive layer containing a conductive substance such as silver does not separate from a primer layer with time. The present invention relates to a conductive pattern including a conductive layer (A) containing a compound (a1) having a basic nitrogen atom-containing group and a conductive substance (a2); a primer layer (B) containing a compound (b1) having a functional group [X]; and a substrate layer (C), the conductive layer (A), the primer layer (B), and the substrate layer (C) being stacked, in which a bond is formed by reacting the basic nitrogen atom-containing group of the compound (a1) contained in the conductive layer (A) with the functional group [X] of the compound (b1) contained in the primer layer (B).
    Type: Application
    Filed: March 10, 2016
    Publication date: July 7, 2016
    Inventors: Akira MURAKAWA, Jun SHIRAKAMI, Wataru FUJIKAWA, Yukie SAITOU
  • Patent number: 9380701
    Abstract: Provided is a laminate in which at least a layer including a support, a primer layer, a first conductive layer, an insulating layer, and a second conductive layer are laminated, wherein the insulating layer is formed by coating at least a portion of or entirety of a surface of the first conductive layer with a resin composition and drying the resin composition; and the second conductive layer includes a second plating seed layer formed by coating a portion of or entirety of a surface of the insulating layer with a fluid containing a conductive substance, and a second plating layer formed on a surface of the second plating seed layer. This laminate has high adhesion between layers and allows the high adhesion to be maintained even upon exposure to a high-temperature and high-humidity environment.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: June 28, 2016
    Assignee: DIC CORPORATION
    Inventors: Akira Murakawa, Jun Shirakami, Wataru Fujikawa, Yukie Saitou
  • Patent number: 9374895
    Abstract: The present invention provides a laminate in which at least a layer including a support, a primer layer, a first conductive layer, an insulating layer, and a second conductive layer are laminated, wherein the insulating layer is formed by coating at least a portion of or entirety of a surface of the first conductive layer with a resin composition and drying the resin composition; and the second conductive layer includes a second plating seed layer formed by coating a portion of or entirety of a surface of the insulating layer with a fluid containing a conductive substance, and a second plating layer formed on a surface of the second plating seed layer. This laminate has high adhesion between layers and allows the high adhesion to be maintained even upon exposure to a high-temperature and high-humidity environment.
    Type: Grant
    Filed: January 21, 2014
    Date of Patent: June 21, 2016
    Assignee: DIC CORPORATION
    Inventors: Akira Murakawa, Jun Shirakami, Wataru Fujikawa, Yukie Saitou
  • Publication number: 20160037632
    Abstract: Provided is a laminate in which at least a layer including a support, a primer layer, a first conductive layer, an insulating layer, and a second conductive layer are laminated, wherein the insulating layer is formed by coating at least a portion of or entirety of a surface of the first conductive layer with a resin composition and drying the resin composition; and the second conductive layer includes a second plating seed layer formed by coating a portion of or entirety of a surface of the insulating layer with a fluid containing a conductive substance, and a second plating layer formed on a surface of the second plating seed layer. This laminate has high adhesion between layers and allows the high adhesion to be maintained even upon exposure to a high-temperature and high-humidity environment.
    Type: Application
    Filed: March 6, 2014
    Publication date: February 4, 2016
    Inventors: Akira MURAKAWA, Jun SHIRAKAMI, Wataru FUJIKAWA, Yukie SAITOU
  • Publication number: 20160007477
    Abstract: There is provided a method for forming an electrically conductive ultrafine pattern which has an excellent pattern cross-sectional shape is provided by a composite technique including a printing process and a plating process, and furthermore, by imparting excellent adhesion to each interface of a laminate including a plating core pattern, an electrically conductive ultrafine pattern which can be preferably used as a highly accurate electric circuit and a method for manufacturing the same are also provided. The method includes (1) a step of applying a resin composition to form a receiving layer on a substrate; (2) a step of printing an ink containing plating core particles by a reverse offset printing method to form a plating core pattern on the receiving layer; and (3) a step of depositing a metal on the plating core pattern formed in the step (2) by an electrolytic plating method.
    Type: Application
    Filed: March 6, 2014
    Publication date: January 7, 2016
    Applicant: DIC CORPORATION
    Inventors: Sunao Yoshihara, Haruhiko Katsuta, Yoshinori Katayama, Jun Shirakami, Akira Murakawa, Wataru Fujikawa, Yukie Saitou
  • Publication number: 20150359095
    Abstract: The present invention provides a laminate in which at least a layer including a support, a primer layer, a first conductive layer, an insulating layer, and a second conductive layer are laminated, wherein the insulating layer is formed by coating at least a portion of or entirety of a surface of the first conductive layer with a resin composition and drying the resin composition; and the second conductive layer includes a second plating seed layer formed by coating a portion of or entirety of a surface of the insulating layer with a fluid containing a conductive substance, and a second plating layer formed on a surface of the second plating seed layer. This laminate has high adhesion between layers and allows the high adhesion to be maintained even upon exposure to a high-temperature and high-humidity environment.
    Type: Application
    Filed: January 21, 2014
    Publication date: December 10, 2015
    Applicant: DIC CORPORATION
    Inventors: Akira MURAKAWA, Jun SHIRAKAMI, Wataru FUJIKAWA, Yukie SAITOU
  • Publication number: 20150353747
    Abstract: The present invention provides an absorbing-layer-forming composition including a blocked isocyanate such that the amount of the blocked isocyanate is 50% by mass to 100% by mass of the solid content of the absorbing-layer-forming composition and an absorbing substrate, a printed item, and a conductive pattern that are formed using the absorbing-layer-forming composition. The absorbing-layer-forming composition according to the present invention can be used for forming an absorbing layer which is capable of carrying a fluid such as an ink therein and which enables good adhesion between various types of supports and a conductive layer to be achieved. In particular, using a blocked isocyanate having a number-average molecular weight of 1,000 to 5,000 further increases the adhesion between various types of supports and the conductive layer.
    Type: Application
    Filed: January 16, 2014
    Publication date: December 10, 2015
    Applicant: DIC CORPORATION
    Inventors: Wataru FUJIKAWA, Jun SHIRAKAMI, Akira MURAKAWA, Yukie SAITOU
  • Publication number: 20150289383
    Abstract: Provided are a method for forming a high-definition metal pattern which including the steps of (1) forming a receiving layer on a substrate by coating the substrate with a resin composition including a urethane resin having a weight-average molecular weight of five thousand or more or a vinyl resin and a medium, (2) forming a plating-core pattern on the receiving layer by printing an ink including a particle that serves as a plating core on the receiving layer by reverse offset printing, and (3) depositing a metal on the plating-core pattern by electroless plating, a high-definition metal pattern formed by the above-described method, and an electronic component including the high-definition metal pattern.
    Type: Application
    Filed: March 6, 2014
    Publication date: October 8, 2015
    Inventors: Sunao Yoshihara, Haruhiko Katsuta, Yoshinori Katayama, Jun Shirakami, Akira Murakawa, Wataru Fujikawa, Yukie Saitou
  • Publication number: 20150068907
    Abstract: It is an object of the present invention to provide a laminate, such as a conductive pattern, having an excellent adhesion at the interfaces between a layer that serves as a support and a conductive layer containing a conductive material and between the conductive layer and a plating layer. The present invention provides a laminate at least including a support layer (I), a conductive layer (II) having an oxidized surface, and a plating layer (III) formed on the oxidized surface of the conductive layer (II); the present invention also provides a conductive pattern and electric circuit each including such a laminate.
    Type: Application
    Filed: March 28, 2013
    Publication date: March 12, 2015
    Applicant: DIC Corporation
    Inventors: Wataru Fujikawa, Yukie Saitou, Akira Murakawa, Jun Shirakami
  • Publication number: 20150060132
    Abstract: An object to be achieved by the present invention is to provide a conductive pattern having such a level of adhesion that a conductive layer containing a conductive substance such as silver does not separate from a primer layer with time. The present invention relates to a conductive pattern including a conductive layer (A) containing a compound (a1) having a basic nitrogen atom-containing group and a conductive substance (a2); a primer layer (B) containing a compound (b1) having a functional group [X]; and a substrate layer (C), the conductive layer (A), the primer layer (B), and the substrate layer (C) being stacked, in which a bond is formed by reacting the basic nitrogen atom-containing group of the compound (a1) contained in the conductive layer (A) with the functional group [X] of the compound (b1) contained in the primer layer (B).
    Type: Application
    Filed: March 8, 2013
    Publication date: March 5, 2015
    Applicant: DIC CORPORATION
    Inventors: Akira Murakawa, Jun Shirakami, Wataru Fujikawa, Yukie Saitou
  • Patent number: 8850479
    Abstract: There is provided a preview distribution technique capable of realizing a flexible preview distribution between a distribution side and a user side. According to the technique, preview meta data describing reference destination information to the preview-constituting data of a plurality of types constituting the content preview is transmitted to a reception terminal. The reception terminal acquires the preview-constituting data by using the reference destination information described in the preview meta data and generates/reproduces the preview. Thus, when modifying the preview, the reception terminal can reproduce the preview after the modification, by acquiring only the data constituting the preview of the modified part, thereby easily modifying the data constituting the preview. That is, it is possible to perform a flexible preview distribution.
    Type: Grant
    Filed: March 1, 2006
    Date of Patent: September 30, 2014
    Assignee: Panasonic Corporation
    Inventors: Xuan Liao, Ming Ji, Sheng Mei Shen, Junichi Sato, Ichiro Takei, Wataru Fujikawa
  • Publication number: 20140202749
    Abstract: An object of the present invention is to provide a resin composition for forming an ink-receiving layer that is capable of forming a printed image having excellent printing properties and water resistance, both in the case of use of a water-based ink and in the case of use of a solvent-based ink. The resin composition for forming an ink-receiving layer includes a binder resin (A) having a weight-average molecular weight of 100,000 or more and an acid value of 90 to 450, an aqueous medium (B), and as required, at least one component (C) selected from the group consisting of a water-soluble resin (c1) and an inorganic filler (c2). The binder resin (A) is dispersed in the aqueous medium (B), and the content of the at least one component (C) relative to the total amount of the binder resin (A) is 0% to 15% by mass.
    Type: Application
    Filed: July 4, 2012
    Publication date: July 24, 2014
    Applicant: DIC CORPORATION
    Inventors: Yukie Saitou, Wataru Fujikawa, Jun Shirakami
  • Patent number: 8784956
    Abstract: An object to be achieved by the present invention is to provide a resin composition for forming a receiving layer, the resin composition being capable of forming, among receiving layers that can carry a fluid such as an ink, a receiving layer having excellent, adhesion to various types of supports and capable of forming a receiving layer which has excellent printing properties without causing bleeding of a fluid such as an ink. The present invention relates to a resin composition for forming a receiving layer, the resin composition containing a urethane resin (A), a vinyl polymer (B), and an aqueous medium (C), in which the urethane resin (A) has an alicyclic structure in an amount of 2,000 to 5,500 mmol/kg relative to the total amount of the urethane resin (A), and a hydrophilic group.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: July 22, 2014
    Assignee: Dic Corporation
    Inventors: Yukie Saitou, Wataru Fujikawa, Jun Shirakami