Patents by Inventor Naoyuki KUSHIHARA

Naoyuki KUSHIHARA 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: 20230250328
    Abstract: Provided is a resin composition that has a low viscosity when in the state of a composition, and provides a cured product having a high thermal conductivity, a high resin strength and a high adhesive force. The composition is a thermally conductive resin composition containing: (A) 100 parts by mass of a heat-curable resin containing at least one kind selected from an epoxy resin, a cyclic imide compound and a cyanate ester resin; and (B) a thermally conductive filler that has a thermal conductivity of not smaller than 10 W/m·K, and is in an amount of 100 to 3,000 parts by mass per 100 parts by mass of the component (A), wherein the component (B) contains therein 40 to 85% by mass of a thermally conductive filler (B1) that has an average particle size of 35 to 200 ?m and a specific surface area of not larger than 0.3 mm2/g.
    Type: Application
    Filed: February 6, 2023
    Publication date: August 10, 2023
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Naoyuki KUSHIHARA, Masahiro KANETA, Kazuaki SUMITA
  • Publication number: 20230159743
    Abstract: Provided is a heat-curable epoxy resin composition having an excellent flexibility when in an uncured state, an excellent storage stability and moldability, a high glass-transition temperature when in the state of a cured product, and an excellent adhesive force to a metal substrate, particularly to a Cu (alloy) substrate. The heat-curable epoxy resin composition contains: (A) a crystalline epoxy resin; (B) a non-crystalline epoxy resin solid at 25° C.; (C) a phenolic compound; (D) a nitrogen atom-containing curing accelerator; (E) a reaction inhibitor; and (F) an inorganic filler.
    Type: Application
    Filed: November 17, 2022
    Publication date: May 25, 2023
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Naoyuki KUSHIHARA, Masahiro KANETA, Kazuaki SUMITA
  • Publication number: 20230067259
    Abstract: Provided is a heat-curable resin composition capable of being turned into a cured product having a low relative permittivity, a low dielectric tangent, an excellent adhesiveness and a high resistance. The heat-curable resin composition contains: (A) a citraconimide compound; (B) an epoxy resin; (C) an epoxy resin curing agent; and (D) a curing accelerator.
    Type: Application
    Filed: July 20, 2022
    Publication date: March 2, 2023
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Naoyuki KUSHIHARA, Rina SASAHARA
  • Publication number: 20220306808
    Abstract: Provided is a resin composition that has a low viscosity before curing, and is capable of being turned into a cured product having superior dielectric properties (low relative permittivity and low dielectric tangent), a low elastic modulus and also an excellent heat resistance. The resin composition is a heat-curable citraconimide resin composition containing: (A) a citraconimide compound having a saturated or unsaturated divalent hydrocarbon group(s) having 6 to 100 carbon atoms; (B) an epoxy resin having at least two epoxy groups in one molecule; and (C) a reaction promoter, wherein a mass ratio between the components (A) and (B) is (A):(B)=99:1 to 1:99.
    Type: Application
    Filed: March 4, 2022
    Publication date: September 29, 2022
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yoshihiro TSUTSUMI, Naoyuki KUSHIHARA, Rina SASAHARA
  • Publication number: 20220195189
    Abstract: Provided is a resin composition that has a low melt viscosity, and is capable of being turned into a cured product having a high heat resistance, a high adhesion and a high glass-transition temperature, though having a low permittivity and a low dielectric tangent. The resin composition is a cyclic imide resin composition containing: (a) a cyclic imide compound represented by the following formula (1), (b) a cyclic imide compound represented by the following formula (2), and (c) a curing catalyst.
    Type: Application
    Filed: December 13, 2021
    Publication date: June 23, 2022
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Hiroyuki IGUCHI, Masayuki IWASAKI, Naoyuki KUSHIHARA
  • Publication number: 20220153919
    Abstract: A silicone hybrid resin composition contains: (A) 100 parts by mass of a curable organic resin composition containing (A1) one or more curable organic resins selected from an epoxy resin, an acrylic resin, a polyimide resin, a maleimide resin, a polyurethane resin, a phenolic resin, a melamine resin, and silicone-modified resins thereof; and (B) 1 to 300 parts by mass of a curable silicone resin composition having a viscosity at 25° C. of 0.01 to 1,000 Pa·s as measured by a method described in JIS K 7117-1:1999, where the component (B) is a dispersion in the component (A), and the component (A) is a curable organic resin composition that cures by a reaction mechanism that is different from a reaction mechanism of the component (B). The silicone hybrid resin composition can lower a storage modulus and is excellent in adhesiveness to a substrate while maintaining the Tg of an organic resin.
    Type: Application
    Filed: November 16, 2021
    Publication date: May 19, 2022
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Tomoyuki MIZUNASHI, Naoyuki KUSHIHARA
  • Publication number: 20220068667
    Abstract: The present invention is a method for producing a power module, including processes (1) to (4) in the following order: (1) a disposition process of disposing a thermosetting resin composition that is solid at 25° C. into a container housing an insulator substrate with multiple semiconductor components mounted thereon; (2) a melt process involving disposing the container having the thermosetting resin composition disposed therein into a molding apparatus capable of heating, pressurization, and depressurization, and heating the container to melt the thermosetting resin composition; (3) a pressurization-depressurization process of performing one or more depressurizations and one or more pressurizations inside the molding apparatus; and (4) a cure process of heating the inside of the molding apparatus to cure the thermosetting resin composition. This is to provide a method for producing a power module having few voids at the time of molding and excellent reliability.
    Type: Application
    Filed: August 12, 2021
    Publication date: March 3, 2022
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Naoyuki KUSHIHARA, Kazuaki SUMITA, Masahiro KANETA
  • Patent number: 11059973
    Abstract: Provided are a resin composition capable of yielding a cured product exhibiting a superior heat resistance over a long period of time, and a superior reflow resistance due to a low water absorption rate even at a high temperature; and a semiconductor device encapsulated by such cured product. The resin composition is a heat-curable resin composition containing: (A) an organopolysiloxane having, in one molecule, at least one cyclic imide group and at least one siloxane bond; (B) an inorganic filler; and (C) a radical polymerization initiator. The semiconductor device is encapsulated by the cured product of such heat-curable resin composition.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: July 13, 2021
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Yoshihiro Tsutsumi, Naoyuki Kushihara, Norifumi Kawamura, Yoshihira Hamamoto, Yuki Kudo
  • Patent number: 11046848
    Abstract: Provided are a resin composition superior in moldability, and capable of yielding a cured product exhibiting a low elastic modulus even at a high temperature and no decrease in glass-transition temperature and having a favorable reflow resistance and heat resistance; and a semiconductor device encapsulated by such cured product. The resin composition is a heat-curable resin composition for semiconductor encapsulation, and contains: (A) an epoxy resin being solid at 25° C.; (B) an organopolysiloxane having, in one molecule, at least one cyclic imide group and at least one siloxane bond; (C) an inorganic filler; and (D) an anionic curing accelerator.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: June 29, 2021
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Yoshihiro Tsutsumi, Naoyuki Kushihara, Yuki Kudo, Norifumi Kawamura, Yoshihira Hamamoto
  • Patent number: 11001704
    Abstract: Provided are a resin composition superior in moldability, and capable of yielding a cured product exhibiting a low elastic modulus even at a high temperature and no decrease in glass-transition temperature and having a favorable reflow resistance and heat resistance; and a semiconductor device encapsulated by such cured product. The resin composition is a heat-curable resin composition for semiconductor encapsulation, and contains: (A) an epoxy resin being solid at 25° C.; (B) an organopolysiloxane having, in one molecule, at least one cyclic imide group and at least one siloxane bond; (C) an inorganic filler; and (D) an anionic curing accelerator.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: May 11, 2021
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Yoshihiro Tsutsumi, Naoyuki Kushihara, Yuki Kudo, Norifumi Kawamura, Yoshihira Hamamoto
  • Publication number: 20210054152
    Abstract: Provided are a heat-curable resin composition capable of being turned into a cured product having a high glass-transition temperature, a low dielectric tangent and a superior adhesion to a metal foil; and an adhesive agent, film, prepreg, laminate, circuit board as well as printed-wiring board using such heat-curable resin composition. The heat-curable resin composition contains: (A) a polyphenylene ether resin having reactive double bonds at molecular chain ends; (B) a (meth)acrylic acid ester compound; (C) a cyclic imide compound containing, in one molecule, at least one dimer acid backbone, at least one linear alkylene group having not less than 6 carbon atoms, and at least two cyclic imide groups; and (D) a reaction initiator.
    Type: Application
    Filed: July 28, 2020
    Publication date: February 25, 2021
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yoshihiro TSUTSUMI, Hiroyuki IGUCHI, Atsushi TSUURA, Naoyuki KUSHIHARA, Yuki KUDO
  • Patent number: 10865304
    Abstract: Provided is a heat-curable resin composition exhibiting a superior handling property and workability in the form of a film, having a high adhesion to a base material, and capable of yielding a cured product with a low elasticity. The heat-curable resin composition contains: (A) 90 to 10 parts by mass of a silicone-modified epoxy resin; (B) 10 to 90 parts by mass of a maleimide compound having a weight-average molecular weight (Mw) of 2,500 to 50,000; and (C) a curing catalyst, provided that a total of the components (A) and (B) is 100 parts by mass.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: December 15, 2020
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Naoyuki Kushihara, Yuki Kudo, Kazuaki Sumita, Yoshihiro Tsutsumi, Yoshihira Hamamoto
  • Patent number: 10850482
    Abstract: The present invention is a resin composition including: (A) an epoxy resin; (B) an epoxy compound shown by the following formula (1) and/or formula (2); (C) a phenolic curing agent; and (D) a curing accelerator, wherein “A” represents a single bond or a divalent organic group selected from the following formulae. This provides a resin composition with improved strength and excellent adhesion and flexibility, a resin film with improved strength formed from the composition, a semiconductor laminate containing the cured material of the resin film and a method for manufacturing the same, as well as a semiconductor device into which the semiconductor laminate is diced and a method for manufacturing the same.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: December 1, 2020
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Yoichiro Ichioka, Naoyuki Kushihara, Kazuaki Sumita, Kazunori Kondo
  • Patent number: 10829589
    Abstract: Provided is a heat-curable resin composition having an excellent workability, and capable of yielding a cured product having both a heat resistance and a low water-absorption property. The heat-curable resin composition contains: (A) a cyanate ester compound having in one molecule at least two cyanato groups, and having a cyanate ester group equivalent of 50 to 140; (B) a cyanate ester compound having in one molecule at least two cyanato groups, and having a cyanate ester group equivalent of 150 to 500; and (C) a curing accelerator, in which the cyanate ester compound (A) is in an amount of 20 to 85% by mass per a total of 100% by mass of the components (A) and (B), and the cyanate ester compound (B) is in an amount of 15 to 80% by mass per the total of 100% by mass of the components (A) and (B).
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: November 10, 2020
    Assignee: Shin-Estu Chemical Co., Ltd.
    Inventors: Naoyuki Kushihara, Kazuaki Sumita
  • Patent number: 10793712
    Abstract: Provided are a heat-curable resin composition for semiconductor encapsulation that is capable of yielding a cured product superior in tracking resistance and dielectric property, and has a favorable continuous moldability; and a semiconductor device encapsulated by a cured product of such resin composition. The heat-curable resin composition for semiconductor encapsulation contains: (A) an epoxy resin other than a silicone-modified epoxy resin, being solid at 25° C.; (B) a silicone-modified epoxy resin; (C) a cyclic imide compound having, in one molecule, at least one dimer acid backbone, at least one linear alkylene group having not less than 6 carbon atoms, at least one alkyl group having not less than 6 carbon atoms, and at least two cyclic imide groups; (D) an organic filler; and (E) an anionic curing accelerator.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: October 6, 2020
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Yoshihiro Tsutsumi, Naoyuki Kushihara, Norifumi Kawamura, Yuki Kudo
  • Patent number: 10730273
    Abstract: The present invention is a resin composition including: (A) an epoxy resin; (B) an epoxy compound shown by the following formula (1) and/or formula (2); (C) an epoxy compound shown by the following formula (3); (D) a phenolic curing agent; and (E) a curing accelerator, wherein “A” represents a single bond or a divalent organic group selected from the following formulae. This provides a resin composition with improved strength, reduced warpage, and excellent adhesion, a resin film with improved strength formed from the composition, a semiconductor laminate containing the cured material of the resin film and a method for manufacturing the same, as well as a semiconductor device into which the semiconductor laminate is diced and a method for manufacturing the same.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: August 4, 2020
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Yoichiro Ichioka, Naoyuki Kushihara, Kazunori Kondo, Kazuaki Sumita
  • Publication number: 20200079954
    Abstract: Provided is a heat-curable resin composition exhibiting a superior handling property and workability in the form of a film, having a high adhesion to a base material, and capable of yielding a cured product with a low elasticity. The heat-curable resin composition contains: (A) 90 to 10 parts by mass of a silicone-modified epoxy resin; (B) 10 to 90 parts by mass of a maleimide compound having a weight-average molecular weight (Mw) of 2,500 to 50,000; and (C) a curing catalyst, provided that a total of the components (A) and (B) is 100 parts by mass.
    Type: Application
    Filed: August 30, 2019
    Publication date: March 12, 2020
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Naoyuki KUSHIHARA, Yuki KUDO, Kazuaki SUMITA, Yoshihiro TSUTSUMI, Yoshihira HAMAMOTO
  • Publication number: 20200048454
    Abstract: Provided are a heat-curable resin composition for semiconductor encapsulation that is capable of yielding a cured product superior in tracking resistance and dielectric property, and has a favorable continuous moldability; and a semiconductor device encapsulated by a cured product of such resin composition. The heat-curable resin composition for semiconductor encapsulation contains: (A) an epoxy resin other than a silicone-modified epoxy resin, being solid at 25° C.; (B) a silicone-modified epoxy resin; (C) a cyclic imide compound having, in one molecule, at least one dimer acid backbone, at least one linear alkylene group having not less than 6 carbon atoms, at least one alkyl group having not less than 6 carbon atoms, and at least two cyclic imide groups; (D) an organic filler; and (E) an anionic curing accelerator.
    Type: Application
    Filed: July 3, 2019
    Publication date: February 13, 2020
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yoshihiro TSUTSUMI, Naoyuki KUSHIHARA, Norifumi KAWAMURA, Yuki KUDO
  • Publication number: 20200048464
    Abstract: Provided are a resin composition capable of yielding a cured product exhibiting a superior heat resistance over a long period of time, and a superior reflow resistance due to a low water absorption rate even at a high temperature; and a semiconductor device encapsulated by such cured product. The resin composition is a heat-curable resin composition containing: (A) an organopolysiloxane having, in one molecule, at least one cyclic imide group and at least one siloxane bond; (B) an inorganic filler; and (C) a radical polymerization initiator. The semiconductor device is encapsulated by the cured product of such heat-curable resin composition.
    Type: Application
    Filed: July 26, 2019
    Publication date: February 13, 2020
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yoshihiro TSUTSUMI, Naoyuki KUSHIHARA, Norifumi KAWAMURA, Yoshihira HAMAMOTO, Yuki KUDO
  • Publication number: 20200048455
    Abstract: Provided are a resin composition superior in moldability, and capable of yielding a cured product exhibiting a low elastic modulus even at a high temperature and no decrease in glass-transition temperature and having a favorable reflow resistance and heat resistance; and a semiconductor device encapsulated by such cured product. The resin composition is a heat-curable resin composition for semiconductor encapsulation, and contains: (A) an epoxy resin being solid at 25° C.; (B) an organopolysiloxane having, in one molecule, at least one cyclic imide group and at least one siloxane bond; (C) an inorganic filler; and (D) an anionic curing accelerator.
    Type: Application
    Filed: July 26, 2019
    Publication date: February 13, 2020
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yoshihiro TSUTSUMI, Naoyuki KUSHIHARA, Yuki KUDO, Norifumi KAWAMURA, Yoshihira HAMAMOTO