Patents by Inventor Shinjiro Fujii

Shinjiro Fujii 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: 10947326
    Abstract: An adhesive composition comprising (a) a (meth)acrylic polymer, (b) a compound having at least two (meth)acryloyl groups, (c) a polymerization initiator and (d) a filler.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: March 16, 2021
    Assignee: SHOWA DENKO MATERIALS CO., LTD.
    Inventors: Sadaaki Katou, Takuya Komine, Shinjiro Fujii
  • Patent number: 10808150
    Abstract: A resin composition comprising (a) an acrylic polymer, (b) a compound having at least one (meth)acryloyl group and (c) a polymerization initiator, in which the absolute value of refractive index difference between the component (a) an acrylic polymer and the component (b) having at least one (meth)acryloyl group at 100° C. is 0.031 or less.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: October 20, 2020
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Sadaaki Kato, Mika Kimura, Aya Ikeda, Shinjiro Fujii
  • Patent number: 10358580
    Abstract: An adhesive composition comprising (a) a compound having at least two ethylenically unsaturated groups, (b) a thermal polymerization initiator, (c) a hindered phenolic compound, (d) a thioether compound and (e) a compound having a thiol group.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: July 23, 2019
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Aya Ikeda, Shinjiro Fujii, Sadaaki Katou, Syougo Kikuchi, Shu Hashimoto
  • Publication number: 20180215842
    Abstract: An adhesive composition comprising (a) a (meth)acrylic polymer, (b) a compound having at least two (meth)acryloyl groups, (c) a polymerization initiator and (d) a filler.
    Type: Application
    Filed: July 27, 2016
    Publication date: August 2, 2018
    Inventors: Sadaaki KATOU, Takuya KOMINE, Shinjiro FUJII
  • Publication number: 20180208807
    Abstract: A resin composition comprising (a) an acrylic polymer, (b) a compound having at least one (meth)acryloyl group and (c) a polymerization initiator, in which the absolute value of refractive index difference between the component (a) an acrylic polymer and the component (b) having at least one (meth)acryloyl group at 100° C. is 0.031 or less.
    Type: Application
    Filed: March 20, 2018
    Publication date: July 26, 2018
    Inventors: Sadaaki KATOU, Mika KIMURA, Aya IKEDA, Shinjiro FUJII
  • Patent number: 9920227
    Abstract: A resin composition comprising (a) an acrylic polymer, (b) a compound having at least one (meth)acryloyl group and (c) a polymerization initiator, in which the absolute value of refractive index difference between the component (a) an acrylic polymer and the component (b) having at least one (meth)acryloyl group at 100° C. is 0.031 or less.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: March 20, 2018
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Sadaaki Katou, Mika Kimura, Aya Ikeda, Shinjiro Fujii
  • Patent number: 9868884
    Abstract: An adhesive composition comprising (a) an acrylic polymer having a weight-average molecular weight of 100000 or more, (b) a compound having at least two (meth)acryloyl groups and (c) a polymerization initiator, in which a structural unit having a nitrogen atom-containing group in the (a) acrylic polymer having a weight-average molecular weight of 100000 or more accounts for 5 mass % or less based on the total amount of the (a) acrylic polymer having a weight-average molecular weight of 100000 or more; and the (a) acrylic polymer having a weight-average molecular weight of 100000 or more has a structural unit having a functional group.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: January 16, 2018
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Aya Ikeda, Sadaaki Katou, Shinjiro Fujii, Syougo Kikuchi, Shu Hashimoto
  • Publication number: 20160355709
    Abstract: A resin composition comprising (a) an acrylic polymer, (b) a compound having at least one (meth)acryloyl group and (c) a polymerization initiator, in which the absolute value of refractive index difference between the component (a) an acrylic polymer and the component (b) having at least one (meth)acryloyl group at 100° C. is 0.031 or less.
    Type: Application
    Filed: January 29, 2015
    Publication date: December 8, 2016
    Inventors: Sadaaki KATOU, Mika KIMURA, Aya IKEDA, Shinjiro FUJII
  • Publication number: 20160340561
    Abstract: An adhesive composition comprising (a) an acrylic polymer having a weight-average molecular weight of 100000 or more, (b) a compound having at least two (meth)acryloyl groups and (c) a polymerization initiator, in which a structural unit having a nitrogen atom-containing group in the (a) acrylic polymer having a weight-average molecular weight of 100000 or more accounts for 5 mass % or less based on the total amount of the (a) acrylic polymer having a weight-average molecular weight of 100000 or more; and the (a) acrylic polymer having a weight-average molecular weight of 100000 or more has a structural unit having a functional group.
    Type: Application
    Filed: January 29, 2015
    Publication date: November 24, 2016
    Inventors: Aya Ikeda, Sadaaki Katou, Shinjiro Fujii, Syougo Kikuchi, Shu Hashimoto
  • Publication number: 20160340554
    Abstract: An adhesive composition comprising (a) a compound having at least two ethylenically unsaturated groups, (b) a thermal polymerization initiator, (c) a hindered phenolic compound, (d) a thioether compound and (e) a compound having a thiol group.
    Type: Application
    Filed: January 29, 2015
    Publication date: November 24, 2016
    Inventors: Aya IKEDA, Shinjiro FUJII, Sadaaki KATOU, Syougo KIKUCHI, Shu HASHIMOTO
  • Publication number: 20120263946
    Abstract: Disclosed is a method for manufacturing a semiconductor device which includes the steps of: forming an adhesive layer by forming an adhesive composition into a film on a surface opposite to the circuit surface of a semiconductor wafer; bringing the adhesive layer to a B-stage by irradiation with light; cutting the semiconductor wafer together with the adhesive layer brought to the B-stage into a plurality of semiconductor chips; and making the semiconductor chip to adhere to a supporting member or another semiconductor chip by performing compression bonding, with the adhesive layer sandwiched therebetween.
    Type: Application
    Filed: November 10, 2010
    Publication date: October 18, 2012
    Inventors: Kazuyuki Mitsukura, Takashi Kawamori, Takashi Masuko, Shigeki Katogi, Shinjiro Fujii
  • Publication number: 20120248634
    Abstract: The method for manufacturing a film-like adhesive according to the present invention includes: applying an adhesive composition comprising (A) a radiation-polymerizable compound, (B) a photoinitiator and (C) a thermosetting resin, and having a solvent content of 5% by mass or lower and being liquid at 25° C., on a base material to thereby form an adhesive composition layer; and irradiating the adhesive composition layer with light to thereby form the film-like adhesive.
    Type: Application
    Filed: November 10, 2010
    Publication date: October 4, 2012
    Inventors: Kazuyuki Mitsukura, Takashi Kawamori, Takashi Masuko, Shigeki Katogi, Shinjiro Fujii
  • Publication number: 20120202015
    Abstract: The method for manufacturing an adhesion body according to the present invention is a method for manufacturing an adhesion body in which a first adherend and a second adherend are bonded to each other via an adhesive pattern, comprising a step of providing an adhesive layer containing a thermosetting component on a first adherend; a step of forming an adhesive pattern by etching the adhesive layer in a state in which a protective layer for protecting a predetermined portion of the adhesive layer from etching is provided on a surface of the adhesive layer opposite to a surface in contact with the first adherend; and a step of bonding a second adherend to the adhesive pattern after the protective layer is removed.
    Type: Application
    Filed: February 3, 2012
    Publication date: August 9, 2012
    Inventors: Aya IKEDA, Shinjiro Fujii, Takashi Kawamori, Takashi Masuko