Patents by Inventor Naoaki MIHARA

Naoaki MIHARA 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: 11306225
    Abstract: The electrically conductive adhesive agent composition comprises a metal particle (Q) and a prescribed organophosphorus compound (A), and the metal particle (Q) comprises a first metal particle (Q1) made of a single metal selected from the group of copper, nickel, aluminum and tin or an alloy comprising two or more metals selected from said group.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: April 19, 2022
    Assignee: Furukawa Electric Co., Ltd.
    Inventors: Shunichiro Sato, Naoaki Mihara, Jirou Sugiyama
  • Patent number: 11230649
    Abstract: The electrically conductive adhesive film comprises a metal particle (Q), a resin (M), and at least one of a prescribed organic phosphine (A) and a prescribed sulfide-based compound (B), the resin (M) comprises a thermosetting resin (M1), and has a storage elastic modulus at 1 Hz measured in a state after sintering of 20 GPa or less and a thermal weight loss ratio when heated for 2 hours at 250° C. under a nitrogen atmosphere of less than 1%.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: January 25, 2022
    Assignee: Furukawa Electric Co., Ltd.
    Inventors: Naoaki Mihara, Noriyuki Kirikae, Jirou Sugiyama
  • Patent number: 11193047
    Abstract: The electrically conductive adhesive film comprises a metal particle (Q), a resin (M), and a prescribed organophosphorus compound (A), the resin (M) comprises a thermosetting resin (M1), and the metal particle (Q) has an average particle size (d50) of 20 ?m or less and comprise 10% by mass or more of a first metal particle (Q1) having a fractal dimension of 1.1 or more when viewed in a projection drawing in a primary particle state.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: December 7, 2021
    Assignee: Furukawa Electric Co., Ltd.
    Inventors: Naoaki Mihara, Noriyuki Kirikae, Jirou Sugiyama
  • Patent number: 11136479
    Abstract: The electrically conductive adhesive film comprises a metal particle (P), a resin (M) and a prescribed sulfide compound (A), the resin (M) comprises a thermosetting resin (M1), and the metal particle (P) has an average particle size (d50) of 20 ?m or less and comprises 10% by mass or more of a first metal particle (P1) having a fractal dimension of 1.1 or more when viewed in a projection drawing in a primary particle state.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: October 5, 2021
    Assignee: Furukawa Electric Co., Ltd.
    Inventors: Naoaki Mihara, Noriyuki Kirikae, Jirou Sugiyama
  • Patent number: 11098226
    Abstract: The electrically conductive adhesive film comprises a metal particle (P), a resin (M) and a prescribed sulfide compound (A), the resin (M) comprises a thermosetting resin (M1), and the metal particle (P) has an average particle size (d50) of 20 ?m or less and comprises 10% by mass or more of a first metal particle (P1) having a fractal dimension of 1.1 or more when viewed in a projection drawing in a primary particle state.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: August 24, 2021
    Assignee: Furukawa Electric Co., Ltd.
    Inventors: Naoaki Mihara, Noriyuki Kirikae, Jirou Sugiyama
  • Patent number: 11066577
    Abstract: The electrically conductive adhesive film comprises a metal particle (P) and a resin (M), the resin (M) comprises a thermosetting resin (M1), and the metal particle (P) has an average particle size (d50) of 20 ?m or less and comprises 10% by mass or more of a first metal particle (P1) having a fractal dimension of 1.1 or more when viewed in a projection drawing in a primary particle state.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: July 20, 2021
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Naoaki Mihara, Noriyuki Kirikae, Jirou Sugiyama
  • Patent number: 10689550
    Abstract: A composition exhibits excellent heat resistance and mounting reliability when bonding a semiconductor power element to a metal lead frame, which is also free of lead and thereby places little burden on the environment. An electrically conductive composition contains at least a sulfide compound represented by R—S—R? (wherein R is an organic group containing at least carbon; R? is an organic group that is the same as or different from R; and R and R? may be bonded to each other to form a so-called cyclic sulfide) and metal particles containing at least Cu, Sn or Ni as its essential component. Further, a conductive paste and a conductive bonding film each are produced using the electrically conductive composition. A dicing die bonding film is obtained by bonding the conductive bonding film with an adhesive tape.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: June 23, 2020
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Naoaki Mihara, Noriyuki Kirikae, Jirou Sugiyama
  • Publication number: 20190016928
    Abstract: The electrically conductive adhesive film comprises a metal particle (P), a resin (M) and a prescribed sulfide compound (A), the resin (M) comprises a thermosetting resin (M1), and the metal particle (P) has an average particle size (d50) of 20 ?m or less and comprises 10% by mass or more of a first metal particle (P1) having a fractal dimension of 1.1 or more when viewed in a projection drawing in a primary particle state.
    Type: Application
    Filed: August 7, 2018
    Publication date: January 17, 2019
    Applicant: Furukawa Electric Co., Ltd.
    Inventors: Naoaki Mihara, Noriyuki Kirikae, Jirou Sugiyama
  • Publication number: 20190016929
    Abstract: The electrically conductive adhesive film comprises a metal particle (Q), a resin (M), and a prescribed organophosphorus compound (A), the resin (M) comprises a thermosetting resin (M1), and the metal particle (Q) has an average particle size (d50) of 20 ?m or less and comprise 10% by mass or more of a first metal particle (Q1) having a fractal dimension of 1.1 or more when viewed in a projection drawing in a primary particle state.
    Type: Application
    Filed: August 7, 2018
    Publication date: January 17, 2019
    Applicant: Furukawa Electric Co., Ltd.
    Inventors: Naoaki Mihara, Noriyuki Kirikae, Jirou Sugiyama
  • Publication number: 20180346768
    Abstract: The electrically conductive adhesive agent composition comprises a metal particle (Q) and a prescribed organophosphorus compound (A), and the metal particle (Q) comprises a first metal particle (Q1) made of a single metal selected from the group of copper, nickel, aluminum and tin or an alloy comprising two or more metals selected from said group.
    Type: Application
    Filed: August 7, 2018
    Publication date: December 6, 2018
    Applicant: Furukawa Electric Co., Ltd.
    Inventors: Shunichiro Sato, Naoaki Mihara, Jirou Sugiyama
  • Publication number: 20180346767
    Abstract: The electrically conductive adhesive film comprises a metal particle (Q), a resin (M), and at least one of a prescribed organic phosphine (A) and a prescribed sulfide-based compound (B), the resin (M) comprises a thermosetting resin (M1), and has a storage elastic modulus at 1 Hz measured in a state after sintering of 20 GPa or less and a thermal weight loss ratio when heated for 2 hours at 250° C. under a nitrogen atmosphere of less than 1%.
    Type: Application
    Filed: August 7, 2018
    Publication date: December 6, 2018
    Applicant: Furukawa Electric Co., Ltd.
    Inventors: Naoaki Mihara, Noriyuki Kirikae, Jirou Sugiyama
  • Publication number: 20180346766
    Abstract: The electrically conductive adhesive film comprises a metal particle (P) and a resin (M), the resin (M) comprises a thermosetting resin (M1), and the metal particle (P) has an average particle size (d50) of 20 m or less and comprises 10% by mass or more of a first metal particle (P1) having a fractal dimension of 1.1 or more when viewed in a projection drawing in a primary particle state.
    Type: Application
    Filed: August 7, 2018
    Publication date: December 6, 2018
    Applicant: Furukawa Electric Co., Ltd,
    Inventors: Naoaki Mihara, Noriyuki Kirikae, Jirou Sugiyama
  • Publication number: 20180294242
    Abstract: A means that exhibits excellent heat resistance and mounting reliability when bonding a power semiconductor device on to a metal lead frame, which is also lead-free and places little burden on the environment. Specifically, an electrically conductive adhesive film, which includes metal particles, a thermosetting resin, and a compound having Lewis acidity or a thermal acid generator, wherein the compound having Lewis acidity or thermal acid generator is selected from: boron fluoride or a complex thereof, a protonic acid with a pKa value of ?0.4 or lower, or a salt or acid obtained by combining an anion that is the same as the salt thereof with hydrogen ion or any other cation. Further, a dicing die bonding film that is obtained by bonding the electrically conductive adhesive film with a pressure-sensitive adhesive tape.
    Type: Application
    Filed: May 25, 2018
    Publication date: October 11, 2018
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Naoaki MIHARA, Noriyuki KIRIKAE, Jirou SUGIYAMA
  • Patent number: 10084153
    Abstract: A filler material for an organic electroluminescent element, formed of a resin composition being liquid at 25° C., and containing a organometallic compound and a hydrocarbon polymer having a number average molecular weight of 300 or more and less than 20,000, and an iodine value less than 40 g/100 g, and having no polar group, wherein a contact angle to silicon nitride is 10 to 40 degrees, and an amount of outgassing other than moisture upon being heated at 85° C. for 1 hour is 500 ppm or less in terms of a toluene equivalent, and a method of sealing an organic electroluminescent element using the same.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: September 25, 2018
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Naoaki Mihara, Yasushi Ishizaka, Tetsuya Mieda
  • Patent number: 10043996
    Abstract: Provided are a resin composition for element encapsulation for organic electronic devices which is transparent, has excellent flexibility, water vapor barrier properties, and adhesive force, and can suppress the generation of dark spots, a resin sheet for element encapsulation for organic electronic devices, an organic electroluminescent element, and an image display device. This adhesive resin composition for element encapsulation for organic electronic devices is used to seal an element for organic electronic devices, and is characterized by containing a diene polymer and a softening agent, in which the content of the softening agent is from 5% by mass to 30% by mass of the total mass.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: August 7, 2018
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Masami Aoyama, Tetsuya Mieda, Keiji Saito, Kunihiko Ishiguro, Toshimitsu Nakamura, Naoaki Mihara, Takumi Asanuma
  • Patent number: 9913324
    Abstract: A resin composition for sealing an organic electroluminescent element, containing: at least one epoxy compound; at least one polyester resin; and at least one Lewis acid compound or at least one compound which generates a Lewis acid, in which the content of the epoxy compound is from 10 to 200 parts by mass with respect to 100 parts by mass of the polyester resin.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: March 6, 2018
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Naoaki Mihara, Kunihiko Ishiguro, Toshimitsu Nakamura, Tetsuya Mieda
  • Publication number: 20180026003
    Abstract: A means that exhibits excellent heat resistance and mounting reliability when bonding a power semiconductor device on to a metal lead frame, which is also lead-free and places little burden on the environment. Specifically, provided is an electrically conductive adhesive film, which includes metal particles, a thermosetting resin, and a compound having Lewis acidity or a thermal acid generator, wherein the compound having Lewis acidity or thermal acid generator is selected from: boron fluoride or a complex thereof, a protonic acid with a pKa value of ?0.4 or lower, or a salt or acid obtained by combining an anion that is the same as the salt thereof with hydrogen ion or any other cation. Further, the present invention provides a dicing die bonding film that is obtained by bonding the electrically conductive adhesive film with a pressure-sensitive adhesive tape.
    Type: Application
    Filed: April 12, 2016
    Publication date: January 25, 2018
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Naoaki MIHARA, Noriyuki KIRIKAE, Jirou SUGIYAMA
  • Publication number: 20170369746
    Abstract: A composition exhibits excellent heat resistance and mounting reliability when bonding a semiconductor power element to a metal lead frame, which is also free of lead and thereby places little burden on the environment. An electrically conductive composition contains at least a sulfide compound represented by R—S—R? (wherein R is an organic group containing at least carbon; R? is an organic group that is the same as or different from R; and R and R? may be bonded to each other to form a so-called cyclic sulfide) and metal particles containing at least Cu, Sn or Ni as its essential component. Further, a conductive paste and a conductive bonding film each are produced using the electrically conductive composition. A dicing die bonding film is obtained by bonding the conductive bonding film with an adhesive tape.
    Type: Application
    Filed: August 21, 2017
    Publication date: December 28, 2017
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Naoaki MIHARA, Noriyuki KIRIKAE, Jirou SUGIYAMA
  • Patent number: 9793511
    Abstract: A filler material for an organic electroluminescent element, formed of a resin composition being liquid at 25° C., and containing a hydrocarbon polymer having a number average molecular weight of 300 or more and less than 32,000 and an organometallic compound represented by M-Ln (wherein, M represents a metal atom; L represents an organic group having 9 or more carbon atoms and 1 or more oxygen atoms, and all of L represent the same organic group; and n represents the valence of a metal atom M), wherein a contact angle to silicon nitride is 10 to 40 degrees, and an amount of outgassing other than moisture upon heating at 85° C. for 1 hour is 500 ppm or less in terms of a toluene equivalent, and a method of sealing an organic electroluminescent element using the same.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: October 17, 2017
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Naoaki Mihara, Yasushi Ishizaka, Tetsuya Mieda, Kunihiko Ishiguro
  • Patent number: 9758690
    Abstract: A transparent resin composition for sealing an organic EL element and other things having a sufficient effect of blocking moisture and excellent flexibility is provided. As essential components, a thermoplastic resin, tackifying resin and organometallic compound represented by the following chemical formula are included, having a light transmittance of 85% or more, and having a relationship of AM/Y<162, A: the acid value excluding the organometallic compound M: the weight average molecular weight of the organometallic compound Y: the weight ratio of the organometallic compound with respect to 100 parts by weight of resin components wherein the thermoplastic resin contains a hydride of a styrene-based A-B-A type triblock, wherein R1 to R4 represent organic groups including an alkyl group, aryl group, alkoxy group, cycloalkyl group and acyl group, each having a carbon number of 1 or more and 8 or less, M represents a metal atom having 3 valency.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: September 12, 2017
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Kunihiko Ishiguro, Tetsuya Mieda, Keiji Saito, Masami Aoyama, Toshimitsu Nakamura, Naoaki Mihara, Takumi Asanuma