Patents by Inventor Eiji Kitaura

Eiji Kitaura 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: 20240087941
    Abstract: Provided is an integrated dicing die bonding sheet having excellent storage stability and stress relaxation properties, having no problems such as chip flying, chipping, cracking, and the like during a dicing process, and having excellent production efficiency; and a method of manufacturing a semiconductor device (particularly including a MEMS device) using the same. An integrated dicing die bonding sheet including a base film, and a silicone-based adhesive sheet having an adhesive surface adhered to the semiconductor wafer, wherein at a stage after dicing the semiconductor wafer and prior to heating, the base film can be interfacially peeled from the silicone-based adhesive sheet, and after the adhesive surface is heated within a range of 50 to 200° C., a peeling mode of the adhesive surface from another non-pressure-sensitive adhesive base material changes to cohesive failure, exhibiting permanent adhesion.
    Type: Application
    Filed: December 14, 2021
    Publication date: March 14, 2024
    Inventors: Nohno TODA, Eiji KITAURA, Manabu SUTOH
  • Patent number: 11257992
    Abstract: A method for producing a sealed optical semiconductor device includes: placing inner and outermost layer sealing films on a substrate on which an optical semiconductor element is mounted within a pressure reduction chamber, and reducing the pressure; a step in which the outermost film is heated, and at least the periphery of the outermost film is thermally fused to the surface of the substrate; and a step in which the reduction of pressure is released, and the substrate is sealed by the outermost film and the inner film. The temperature T2 of the substrate when the reduction of pressure is released is a temperature at which the outermost film exhibits a tensile strength of 0.02-0.15 MPa and an elongation at break of 200-450%. The inner film exhibits a loss tangent (tan ?) of 1.6 or more at the temperature T2.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: February 22, 2022
    Assignees: DuPont Toray Specialty Materials Kabushiki Kaisha, Dow Silicones Corporation
    Inventors: Eiji Kitaura, Masaaki Amako, Steven Swier
  • Patent number: 11139419
    Abstract: A method for producing a sealed optical semiconductor device makes it possible to seal an optical semiconductor element using a sealing film. The method includes: placing a sealing film on an optical semiconductor element substrate on which an optical semiconductor element is placed within a pressure reduction chamber, and the pressure within the chamber is reduced; heating the film where at least the periphery of the film is thermally fused to the surface of the optical semiconductor element placement substrate; and a step in which the reduction of pressure within the chamber is released and the optical semiconductor element placement substrate is sealed by the film. The temperature T2 of the optical semiconductor element placement substrate when the reduction of pressure within the chamber is released is a temperature at which the film exhibits a tensile strength of 0.02-0.15 MPa and an elongation at break of 150-450%.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: October 5, 2021
    Assignees: DuPont Toray Specialty Materials Kabushiki Kaisha, Dow Silicones Corporation
    Inventors: Eiji Kitaura, Masaaki Amako, Steven Swier
  • Publication number: 20200373457
    Abstract: A method for producing a sealed optical semiconductor device makes it possible to seal an optical semiconductor element using a sealing film. The method includes: placing a sealing film on an optical semiconductor element substrate on which an optical semiconductor element is placed within a pressure reduction chamber, and the pressure within the chamber is reduced; heating the film where at least the periphery of the film is thermally fused to the surface of the optical semiconductor element placement substrate; and a step in which the reduction of pressure within the chamber is released and the optical semiconductor element placement substrate is sealed by the film. The temperature T2 of the optical semiconductor element placement substrate when the reduction of pressure within the chamber is released is a temperature at which the film exhibits a tensile strength of 0.02-0.15 MPa and an elongation at break of 150-450%.
    Type: Application
    Filed: August 31, 2018
    Publication date: November 26, 2020
    Inventors: Eiji Kitaura, Masaaki Amako, Steven Swier
  • Publication number: 20200220055
    Abstract: A method for producing a sealed optical semiconductor device includes: placing inner and outermost layer sealing films on a substrate on which an optical semiconductor element is mounted within a pressure reduction chamber, and reducing the pressure; a step in which the outermost film is heated, and at least the periphery of the outermost film is thermally fused to the surface of the substrate; and a step in which the reduction of pressure is released, and the substrate is sealed by the outermost film and the inner film. The temperature T2 of the substrate when the reduction of pressure is released is a temperature at which the outermost film exhibits a tensile strength of 0.02-0.15 MPa and an elongation at break of 200-450%. The inner film exhibits a loss tangent (tan ?) of 1.6 or more at the temperature T2.
    Type: Application
    Filed: August 31, 2018
    Publication date: July 9, 2020
    Inventors: Eiji Kitaura, Masaaki Amako, Steven Swier
  • Patent number: 10604658
    Abstract: An organic silicon compound is disclosed which is represented by a formula: (R13SiO)3SiR2—[SiR32O]y[SiR32]w—R4—R5, wherein each of R1 and R3 is a group independently selected from the group consisting of alkyl groups, alkenyl groups, aryl groups, aralkyl groups and alkoxy groups having 1 to 20 carbon atoms, R2 is a divalent hydrocarbon group or an oxygen atom, R4 is a divalent hydrocarbon group, or a direct bond to a silicon (Si) atom, R5 is a monovalent group represented by (R6O)qR7(3-q)Si or a monovalent hydrocarbon group having 1 to 20 carbon atoms, and each of R6 and R7 is a group independently selected from the group consisting of alkyl groups, alkenyl groups, aryl groups, aralkyl groups and alkoxy groups having 1 to 20 carbon atoms, and q is an integer between 1 and 3, y is an integer between 0 and 200, and w is 0 or 1.
    Type: Grant
    Filed: August 11, 2014
    Date of Patent: March 31, 2020
    Assignee: Dow Toray Co., Ltd.
    Inventors: Haruhiko Furukawa, Makoto Iwai, Kousei Iwakawa, Eiji Kitaura, Kazuhiro Nishijima, Tadashi Okawa
  • Publication number: 20180230172
    Abstract: An organic silicon compound is disclosed which is represented by a formula : (R13SiO)3SiR2-[SiR32O]y[SiR32]w-R4-R5, wherein each of R1 and R3 is a group independently selected from the group consisting of alkyl groups, alkenyl groups, aryl groups, aralkyl groups and alkoxy groups having 1 to 20 carbon atoms, R2 is a divalent hydrocarbon group or an oxygen atom, R4 is a divalent hydrocarbon group, or a direct bond to a silicon (Si) atom, R5 is a monovalent group represented by (R6O)qR7(3-q)Si or a monovalent hydrocarbon group having 1 to 20 carbon atoms, and each of R6 and R7 is a group independently selected from the group consisting of alkyl groups, alkenyl groups, aryl groups, aralkyl groups and alkoxy groups having 1 to 20 carbon atoms, and q is an integer between 1 and 3, y is an integer between 0 and 200, and w is 0 or 1.
    Type: Application
    Filed: August 11, 2014
    Publication date: August 16, 2018
    Inventors: Haruhiko FURUKAWA, Makoto IWAI, Kousei IWAKAWA, Eiji KITAURA, Kazuhiro NISHIJIMA, Tadashi OKAWA
  • Patent number: 9947858
    Abstract: The present invention provides a curable organopolysiloxane composition capable of producing a cured article that can be used as a transducer and provided with excellent mechanical characteristics and/or electrical characteristics. The present invention also relates to a novel curable organopolysiloxane composition for transducer use comprising a curable organopolysiloxane composition, dielectric inorganic fine particles having a specific dielectric constant of greater than or equal to 10, and fine particles having a specific dielectric constant of less than 10.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: April 17, 2018
    Assignees: DOW CORNING CORPORATION, DOW CORNING TORAY CO., LTD.
    Inventors: Toyohiko Fujisawa, Hiroshi Fukui, Haruhiko Furukawa, Peter Cheshire Hupfield, Hong Sub Kim, Eiji Kitaura, Kent R. Larson, Wataru Nishiumi, Takuya Ogawa, Masayuki Onishi, Kouichi Ozaki, Keiji Wakita
  • Patent number: 9879126
    Abstract: The present invention provides a curable organopolysiloxane composition capable of producing a cured article that can be used as a transducer and provided with excellent mechanical characteristics and/or electrical characteristics. The present invention also relates to a novel curable organopolysiloxane composition for transducer use comprising a curable organopolysiloxane composition and a compound having a highly dielectric functional group.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: January 30, 2018
    Assignees: DOW CORNING CORPORATION, DOW CORNING TORAY CO., LTD.
    Inventors: Haruhiko Furukawa, Peter Cheshire Hupfield, Hong Sub Kim, Eiji Kitaura, Kent R. Larson, Wataru Nishiumi, Takuya Ogawa, Kouichi Ozaki, Son Thanh Phan, Keiji Wakita
  • Publication number: 20150380636
    Abstract: The present invention provides a curable organopolysiloxane composition capable of producing a cured article that can be used as a transducer and provided with excellent mechanical characteristics and/or electrical characteristics. The present invention also relates to a novel curable organopolysiloxane composition for transducer use comprising a curable organopolysiloxane composition, dielectric inorganic fine particles having a specific dielectric constant of greater than or equal to 10, and fine particles having a specific dielectric constant of less than 10.
    Type: Application
    Filed: December 26, 2013
    Publication date: December 31, 2015
    Inventors: Toyohiko Fujisawa, Hiroshi Fukui, Haruhiko Furukawa, Peter Cheshire Hupfield, Hong Sub Kim, Eiji Kitaura, Kent R. Larson, Wataru Nishiumi, Takuya Ogawa, Masayuki Onishi, Kouichi Ozaki, Keiji Wakita
  • Publication number: 20150344671
    Abstract: The present invention provides a curable organopolysiloxane composition capable of producing a cured article that can be used as a transducer and provided with excellent mechanical characteristics and/or electrical characteristics. The present invention also relates to a novel curable organopolysiloxane composition for transducer use comprising a curable organopolysiloxane composition and a compound having a highly dielectric functional group.
    Type: Application
    Filed: December 26, 2013
    Publication date: December 3, 2015
    Inventors: Haruhiko Furukawa, Peter Cheshire Hupfield, Hong Sub Kim, Eiji Kitaura, Kent R. Larson, Wataru Nishiumi, Takuya Ogawa, Kouichi Ozaki, Son Thanh Phan, Keiji Wakita
  • Patent number: 9175177
    Abstract: There is provided a polyester coating composition having excellent action of preventing deposition of outdoor stain and stain caused by rainfall, being capable of extending a period of time (pot life) from the mixing to the coating, and comprising (A) a polyester resin, (B) one or more of fluorine-containing organosilicon compounds having a fluorine content of 5 to 30% by mass, (C) one or more of aliphatic hydrocarbon compounds having hydroxyl group and 1 to 10 carbon atoms, in which a part of hydrogen atoms bonded to carbon atom may be substituted by fluorine atoms and/or one or more of alkoxy compounds having 2 to 10 carbon atoms, in which a part of hydrogen atoms bonded to carbon atom may be substituted by fluorine atoms, and (D) an organic solvent.
    Type: Grant
    Filed: January 18, 2008
    Date of Patent: November 3, 2015
    Assignees: DAIKIN INDUSTRIES, LTD., DOW CORNING CORPORATION
    Inventors: Masaru Nagato, Masahiko Maeda, Tetsuya Masutani, Satoshi Onodera, Eiji Kitaura, Motoshi Sasaki, Peter Cheshire Hupfield
  • Patent number: 9018306
    Abstract: There is provided a curable fluorine-containing polymer composition which is rapidly cured at relatively low temperature by hydrosilylation reaction to form a coating film having not only high hardness and flexibility but also water- and oil-repellency, thereby giving stain-proofing effect for a long period of time, especially maintaining property of removing and wiping-off stain.
    Type: Grant
    Filed: June 9, 2008
    Date of Patent: April 28, 2015
    Assignees: Dow Corning Corporation, Daikin Industries, Ltd.
    Inventors: Masayuki Hayashi, Eiji Kitaura, Peter Cheshire Hupfield, Katsuhiko Imoto, Masaru Nagato
  • Patent number: 8925626
    Abstract: A substrate is surface treated using a composition for forming a film that comprises (A) an organoalkoxysilane, (B) an organopolysiloxane having a silicon-bonded hydrogen atom, and (C) a condensation reaction catalyst. This composition for forming a film can form a highly hydrophobic water repellent film provided with sufficient water shedding performance. It is possible to provide a highly hydrophobic substrate such as a heat dissipating body.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: January 6, 2015
    Assignee: Dow Corning Toray Co., Ltd.
    Inventors: Keiichi Akinaga, Tadashi Okawa, Kazuhiro Nishijima, Eiji Kitaura
  • Publication number: 20130340992
    Abstract: A substrate is surface treated using a composition for forming a film that comprises (A) an organoalkoxysilane, (B) an organopolysiloxane having a silicon-bonded hydrogen atom, and (C) a condensation reaction catalyst. This composition for forming a film can form a highly hydrophobic water repellent film provided with sufficient water shedding performance. It is possible to provide a highly hydrophobic substrate such as a heat dissipating body.
    Type: Application
    Filed: April 4, 2012
    Publication date: December 26, 2013
    Inventors: Keiichi Akinaga, Tadashi Okawa, Kazuhiro Nishijima, Eiji Kitaura
  • Patent number: 8026313
    Abstract: A curable polymer composition that is quickly curable to form a cured article having excellent adhesion and followability to a substrate and at least including (A) an acrylic copolymer having a hydrogen atom bonded to a silicon atom, (B) a compound having at least two aliphatic unsaturated bonds in one molecule thereof, (C) a fluoroolefin copolymer including vinylidene fluoride as main component, and (D) a catalyst for hydrosilylation reaction.
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: September 27, 2011
    Assignee: Daikin Industries, Ltd.
    Inventors: Katsuhiko Imoto, Tetsuo Shimizu, Masayuki Hayashi, Tomohiro Iimura, Eiji Kitaura, Peter Cheshire Hupfield
  • Publication number: 20100210769
    Abstract: There is provided a curable fluorine-containing polymer composition which is rapidly cured at relatively low temperature by hydrosilylation reaction to form a coating film having not only high hardness and flexibility but also water- and oil-repellency, thereby giving stain-proofing effect for a long period of time, especially maintaining property of removing and wiping-off stain.
    Type: Application
    Filed: June 9, 2008
    Publication date: August 19, 2010
    Applicant: DOW CORNING CORPORATION
    Inventors: Masayuki Hayashi, Eiji Kitaura, Peter Cheshire Hupfield, Katsuhiko Imoto, Masaru Nagato
  • Publication number: 20100168304
    Abstract: There is provided a polyester coating composition having excellent action of preventing deposition of outdoor stain and stain caused by rainfall, being capable of extending a period of time (pot life) from the mixing to the coating, and comprising (A) a polyester resin, (B) one or more of fluorine-containing organosilicon compounds having a fluorine content of 5 to 30% by mass, (C) one or more of aliphatic hydrocarbon compounds having hydroxyl group and 1 to 10 carbon atoms, in which a part of hydrogen atoms bonded to carbon atom may be substituted by fluorine atoms and/or one or more of alkoxy compounds having 2 to 10 carbon atoms, in which a part of hydrogen atoms bonded to carbon atom may be substituted by fluorine atoms, and (D) an organic solvent.
    Type: Application
    Filed: January 18, 2008
    Publication date: July 1, 2010
    Applicants: DAIKIN INDUSTRIES,LTD., DOW CORNING CORPORATION
    Inventors: Masaru Nagato, Masahiko Maeda, Tetsuya Masutani, Satoshi Onodera, Eiji Kitaura, Motoshi Sasaki, Peter Cheshire Hupfield
  • Publication number: 20100076158
    Abstract: There is provided a curable polymer composition being curable quickly to form a cured article having excellent adhesion and followability to a substrate and at least comprising (A) an acrylic copolymer having a hydrogen atom bonded to a silicon atom, (B) a compound having at least two aliphatic unsaturated bonds in one molecule thereof, (C) a fluoroolefin copolymer comprising vinylidene fluoride as main component, and (D) a catalyst for hydrosilylation reaction.
    Type: Application
    Filed: December 6, 2007
    Publication date: March 25, 2010
    Applicant: Daikin Industries, Ltd.
    Inventors: Katsuhiko Imoto, Tetsuo Shimizu, Masayuki Hayashi, Tomohiro Iimura, Eiji Kitaura, Peter Cheshire Hupfield
  • Patent number: 4713278
    Abstract: A magnetic recording medium comprises a light-shielding base in the form of a tape or sheet, and a magnetic layer composed of a magnetic powder of Co-coated .gamma.-Fe.sub.2 O.sub.3 dispersed in a resin binder and applied to the base. The powder has a specific surface area as determined by the BET adsorption method of at least 35 m.sup.2 /g. The light-shielding base portion contiguous to the magnetic layer is a transparent plastic film and the lower base portion is light-shielding. The light-shielding base has a light transmittance of 30% or below. The surface roughness of the base is, in terms of the center-line average surface roughness, 0.012 .mu.m or below.
    Type: Grant
    Filed: September 4, 1986
    Date of Patent: December 15, 1987
    Assignee: TDK Corporation
    Inventors: Kuniichi Yoda, Eiji Kitaura, Tsutomu Tsunoda, Yoshio Kawakami