Patents by Inventor Yoshiyuki Takahashi

Yoshiyuki Takahashi 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: 20140151171
    Abstract: An energy absorbing body includes: a first energy absorbing member (28A) that contains a rigid polyurethane foam (20A); a second energy absorbing member (20B) that contains a rigid polyurethane foam (28B) and that has different compressive stress compared to the first energy absorbing member (28A); and a partitioning member (20C) that contains a rigid polyurethane foam, that is disposed between the first energy absorbing member (20A) and the second energy absorbing member (20B), and that has a smaller difference in compressive stress with respect to the first energy absorbing member (20A) than a difference in compressive stress with respect to the second energy absorbing member (20B).
    Type: Application
    Filed: August 9, 2012
    Publication date: June 5, 2014
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Masatoshi Sato, Masaaki Zenba, Kazushige Ebe, Yoshiyuki Takahashi
  • Patent number: 8703845
    Abstract: A high degree of resistance to moisture and solder and high flame retardancy are realized without incorporating a halogen in view of environmental friendliness. A phenolic resin has structural moieties which are a naphthylmethyloxy group- or anthrylmethyloxy group-containing aromatic hydrocarbon group (ph1), a phenolic hydroxyl group-containing aromatic hydrocarbon group (ph2), and a divalent aralkyl group (X) represented by general formula (1) below: (where Ar represents a phenylene group or a biphenylene group and Rs each independently represent a hydrogen atom or a methyl group) and has a structure in which plural aromatic hydrocarbon groups selected from the group consisting of the naphthylmethyloxy group- or anthrylmethyloxy group-containing aromatic hydrocarbon group (ph1) and the phenolic hydroxyl group-containing aromatic hydrocarbon group (ph2) are bonded through the divalent aralkyl group (X). This phenolic resin is used as a curing agent for an epoxy resin.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: April 22, 2014
    Assignee: DIC Corporation
    Inventors: Ichirou Ogura, Yoshiyuki Takahashi, Norio Nagae, Yousuke Hirota
  • Publication number: 20130237639
    Abstract: A high degree of resistance to moisture and solder and high flame retardancy are realized without incorporating a halogen in view of environmental friendliness. A phenolic resin has structural moieties which are a naphthylmethyloxy group- or anthrylmethyloxy group-containing aromatic hydrocarbon group (ph1), a phenolic hydroxyl group-containing aromatic hydrocarbon group (ph2), and a divalent aralkyl group (X) represented by general formula (1) below: (where Ar represents a phenylene group or a biphenylene group and Rs each independently represent a hydrogen atom or a methyl group) and has a structure in which plural aromatic hydrocarbon groups selected from the group consisting of the naphthylmethyloxy group- or anthrylmethyloxy group-containing aromatic hydrocarbon group (ph1) and the phenolic hydroxyl group-containing aromatic hydrocarbon group (ph2) are bonded through the divalent aralkyl group (X). This phenolic resin is used as a curing agent for an epoxy resin.
    Type: Application
    Filed: September 27, 2011
    Publication date: September 12, 2013
    Applicant: DIC CORPORATION
    Inventors: Ichirou Ogura, Yoshiyuki Takahashi, Norio Nagae, Yousuke Hirota
  • Publication number: 20130187296
    Abstract: The present invention is related to a method for producing a resin compact containing an epoxy resin, a curing agent, a curing accelerator and an inorganic filler. The method includes a kneading and crushing process for preparing a first powder material obtained by mixing, heat-melting, kneading and crushing a first component containing the epoxy resin and the curing agent and the inorganic filler, but not containing the curing accelerator; a pulverizing process for preparing a second powder material obtained by pulverizing a second component containing the curing accelerator; a mixing process for preparing a resin composition by dispersing and mixing the first powder material and the second powder material; and a molding process for obtaining the resin compact by compression-molding the resin composition. This makes it possible to obtain a resin compact (particularly, a resin compact for encapsulation) having superior long term storage stability at room temperature, good curable property and fluidity.
    Type: Application
    Filed: August 30, 2011
    Publication date: July 25, 2013
    Applicant: SUMITOMO BAKELITE COMPANY LIMITED
    Inventors: Yoshiyuki Takahashi, Hiroshi Utsugi
  • Publication number: 20130184377
    Abstract: The present invention provides a heat-curable resin composition having excellent fluidity and realizing moisture-resistance reliability suitable for recent electronic component-related materials and high flame retardancy in a halogen-free state for harmony with the environment, a cured product thereof, a semiconductor encapsulating material using the composition, and a phenol resin and epoxy resin which give these performances. The heat-curable resin composition includes, as essential components, an epoxy resin (A) and a phenol resin (B), the phenol resin (B) having a phenol resin structure having, as a basic skeleton, a structure in which a plurality of phenolic hydroxyl group-containing aromatic skeletons (ph) are bonded to each other through an alkylidene group or a methylene group having an aromatic hydrocarbon structure, and an aromatic nucleus of the phenol resin structure has a naphthylmethyl group or an anthrylmethyl group.
    Type: Application
    Filed: July 19, 2011
    Publication date: July 18, 2013
    Applicant: DIC CORPORATION
    Inventors: Ichirou Ogura, Yousuke Hirota, Yoshiyuki Takahashi, Norio Nagae, Nobuya Nakamura
  • Patent number: 8440781
    Abstract: The object of the present invention is to provide an epoxy resin composition capable of realizing low dielectric constant and low dielectric dissipation factor, which is suited for use as a latest current high-frequency type electronic component-related material, without deteriorating heat resistance during the curing reaction. A phenol resin, which has the respective structural units of a phenolic hydroxyl group-containing aromatic hydrocarbon group (P) derived from phenols, an alkoxy group-containing condensed polycyclic aromatic hydrocarbon group (B) derived from methoxynaphthalene and a divalent hydrocarbon group (X) such as methylene and also has a structure represented by -P-B-X- wherein P, B and X are structural sites of these groups in a molecular structure, is used as a curing agent for the epoxy resin, or a phenol resin as an epoxy resin material.
    Type: Grant
    Filed: December 9, 2009
    Date of Patent: May 14, 2013
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Ichirou Ogura, Yoshiyuki Takahashi, Yutaka Sato
  • Patent number: 8420749
    Abstract: The object of the present invention is to provide an epoxy resin composition capable of realizing low dielectric constant and low dielectric dissipation factor, which is suited for use as a latest current high-frequency type electronic component-related material, without deteriorating heat resistance during the curing reaction. A phenol resin, which has the respective structural units of a phenolic hydroxyl group-containing aromatic hydrocarbon group (P) derived from phenols, an alkoxy group-containing condensed polycyclic aromatic hydrocarbon group (B) derived from methoxynaphthalene and a divalent hydrocarbon group (X) such as methylene and also has a structure represented by —P—B—X— wherein P, B and X are structural sites of these groups in a molecular structure, is used as a curing agent for the epoxy resin, or a phenol resin as an epoxy resin material.
    Type: Grant
    Filed: March 1, 2006
    Date of Patent: April 16, 2013
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Ichirou Ogura, Yoshiyuki Takahashi, Yutaka Sato
  • Publication number: 20130043101
    Abstract: A main body portion (12) of an impact absorber (10) is a three-dimensional structure formed of stiff polyurethane foam. A ratio (W2/W1) of a width W2 of a slot (30) formed in an impact surface (12A) of the main body portion (12) to a width W1 of the impact surface (12A) of the main body portion (12) is in a range from ? to ½. In consequence, when a knee area M1 of an occupant M impacts against the impact surface (12A) of the main body portion (12) of the impact absorber (10), a concentration of loading on the impact surface (12A) in an initial impact period is suppressed because the slot (30) is formed in the impact surface (12A), which is most liable to bear the load in the initial impact period, and the load is dispersed. Thus, a large breakage or significant scattering of the main body portion (12) of the impact absorber (10) in the initial impact period may be suppressed, and amounts of impact absorption energy in a middle impact period and a later impact period may be assured.
    Type: Application
    Filed: April 27, 2011
    Publication date: February 21, 2013
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Yoshiyuki Takahashi, Shin Tada
  • Patent number: 8288003
    Abstract: Provided are a method for producing a phosphorus-containing phenolic compound in which reactivity is considerably excellent in the reaction between a phosphorus-containing compound and an aromatic nucleus of a phenol; in the case of using a polyhydric phenol or a phenolic resin as the phenol, a novel phosphorus-containing phenolic compound that serves as a curing agent for an epoxy resin and imparts excellent heat resistance to a cured product; a curable resin composition containing the novel phosphorus-containing phenolic compound; a cured product of the curable resin composition; a printed wiring board; and a semiconductor sealing material. An aromatic aldehyde (a1) having an alkoxy group as a substituent on an aromatic nucleus is allowed to react with an organic phosphorus compound (a2) intramolecularly having a P—H group or a P—OH group. The resultant reaction product is then allowed to react with a phenol (a3).
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: October 16, 2012
    Assignee: DIC Corporation
    Inventors: Koji Hayashi, Yoshiyuki Takahashi, Ichirou Ogura
  • Patent number: 8263714
    Abstract: An epoxy resin composition including an epoxy resin and a curing agent as essential components, in which the curing agent comprises a phenol resin which has each structural moiety of a phenolic hydroxyl group-containing aromatic hydrocarbon group (P), an alkoxy group-containing aromatic hydrocarbon group (B) and a divalent aralkyl group (X), and also has, in a molecular structure, a structure in which the phenolic hydroxyl group-containing aromatic hydrocarbon group (P) and the alkoxy group-containing aromatic hydrocarbon group (B) are bonded with the other phenolic hydroxyl group-containing aromatic hydrocarbon group (P) or alkoxy group-containing aromatic hydrocarbon group (B) via the divalent aralkyl group (X).
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: September 11, 2012
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Ichiro Ogura, Yoshiyuki Takahashi, Kazuo Arita, Kunihiro Morinaga, Yutaka Satou
  • Publication number: 20120095156
    Abstract: Provided are a method for producing a phosphorus-containing phenolic compound in which reactivity is considerably excellent in the reaction between a phosphorus-containing compound and an aromatic nucleus of a phenol; in the case of using a polyhydric phenol or a phenolic resin as the phenol, a novel phosphorus-containing phenolic compound that serves as a curing agent for an epoxy resin and imparts excellent heat resistance to a cured product; a curable resin composition containing the novel phosphorus-containing phenolic compound; a cured product of the curable resin composition; a printed wiring board; and a semiconductor sealing material. An aromatic aldehyde (a1) having an alkoxy group as a substituent on an aromatic nucleus is allowed to react with an organic phosphorus compound (a2) intramolecularly having a P—H group or a P—OH group. The resultant reaction product is then allowed to react with a phenol (a3).
    Type: Application
    Filed: August 5, 2009
    Publication date: April 19, 2012
    Applicant: DIC Corporation
    Inventors: Koji Hayashi, Yoshiyuki Takahashi, Ichirou Ogura
  • Publication number: 20110275739
    Abstract: An epoxy resin composition including an epoxy resin and a curing agent as essential components, in which the curing agent comprises a phenol resin which has each structural moiety of a phenolic hydroxyl group-containing aromatic hydrocarbon group (P), an alkoxy group-containing aromatic hydrocarbon group (B) and a divalent aralkyl group (X), and also has, in a molecular structure, a structure in which the phenolic hydroxyl group-containing aromatic hydrocarbon group (P) and the alkoxy group-containing aromatic hydrocarbon group (B) are bonded with the other phenolic hydroxyl group-containing aromatic hydrocarbon group (P) or alkoxy group-containing aromatic hydrocarbon group (B) via the divalent aralkyl group (X).
    Type: Application
    Filed: June 10, 2011
    Publication date: November 10, 2011
    Applicant: DAINIPPON INK AND CHEMICALS, INC.
    Inventors: Ichiro Ogura, Yoshiyuki Takahashi, Kazuo Arita, Kunihiro Morinaga, Yutaka Satou
  • Patent number: 7985822
    Abstract: An epoxy resin composition including an epoxy resin and a curing agent as essential components, in which the curing agent comprises a phenol resin which has each structural moiety of a phenolic hydroxyl group-containing aromatic hydrocarbon group (P), an alkoxy group-containing aromatic hydrocarbon group (B) and a divalent aralkyl group (X), and also has, in a molecular structure, a structure in which the phenolic hydroxyl group-containing aromatic hydrocarbon group (P) and the alkoxy group-containing aromatic hydrocarbon group (B) are bonded with the other phenolic hydroxyl group-containing aromatic hydrocarbon group (P) or alkoxy group-containing aromatic hydrocarbon group (B) via the divalent aralkyl group (X).
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: July 26, 2011
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Ichiro Ogura, Yoshiyuki Takahashi, Kazuo Arita, Kunihiro Morinaga, Yutaka Satou
  • Publication number: 20100111987
    Abstract: Compositions and methods are provided for preventing or treating neoplastic disease in a mammalian subject. A composition is provided which comprises an enriched immune cell population reactive to a human endogenous retrovirus type E antigen on a tumor cell. A method of treating a neoplastic disease in a mammalian subject is provided which comprises administering to a mammalian subject a composition comprising an enriched immune cell population reactive to a human endogenous retrovirus type E antigen, in an amount effective to reduce or eliminate the neoplastic disease or to prevent its occurrence or recurrence.
    Type: Application
    Filed: March 16, 2007
    Publication date: May 6, 2010
    Inventors: Richard William Wyatt Childs, Yoshiyuki Takahashi
  • Publication number: 20100087590
    Abstract: The object of the present invention is to provide an epoxy resin composition capable of realizing low dielectric constant and low dielectric dissipation factor, which is suited for use as a latest current high-frequency type electronic component-related material, without deteriorating heat resistance during the curing reaction. A phenol resin, which has the respective structural units of a phenolic hydroxyl group-containing aromatic hydrocarbon group (P) derived from phenols, an alkoxy group-containing condensed polycyclic aromatic hydrocarbon group (B) derived from methoxynaphthalene and a divalent hydrocarbon group (X) such as methylene and also has a structure represented by -P-B-X- wherein P, B and X are structural sites of these groups in a molecular structure, is used as a curing agent for the epoxy resin, or a phenol resin as an epoxy resin material.
    Type: Application
    Filed: December 9, 2009
    Publication date: April 8, 2010
    Applicant: DAINIPPON INK AND CHEMICALS, INC.
    Inventors: Ichirou OGURA, Yoshiyuki TAKAHASHI, Yutaka SATO
  • Patent number: 7665297
    Abstract: An internal combustion engine has a separate exhaust passage for each one of banks. An exhaust purifying catalyst is provided in each exhaust passage. The mass flow rates G1, G2 of exhaust gas that flow through the exhaust passages are individually estimated. The flow rate of exhaust gas is individually adjusted per each bank by controlling the operation of each one of exhaust gas recirculation valves such that the difference between the estimated mass flow rates G1, G2 is decreased.
    Type: Grant
    Filed: March 14, 2005
    Date of Patent: February 23, 2010
    Assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Hisanobu Suzuki, Yoshitaka Nakamura, Yoshiyuki Takahashi, Yuzuru Ikeda, Shinichi Kusakabe, Tadashi Toyota
  • Patent number: 7658426
    Abstract: Disclosed is a foam-molded member having a skin with which peeling or floating does not occur when the skin is wrapped. Also disclosed is a method of manufacturing the foam-molded member having a skin. A foam-molded member having a skin, such as a door trim, includes a core, a skin, foam and a fixing member. The core can be folded at a folding portion, and the skin faces the core. The foam is filled in a space between the core and the skin. The fixing member fixes the core that is integrally formed with the skin and the foam and is folded at the folding portion. The core is divided into a body portion and an extension portion, with the folding portion serving as a boundary. The extension portion folded at the folding portion is fixed to the body portion by the fixing member.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: February 9, 2010
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kazutaka Hayakawa, Takeshi Yoshida, Yoshiyuki Takahashi, Fumio Saito, Kenichi Ochiai
  • Patent number: 7644701
    Abstract: A preset waiting period is previously set on the basis of a signal in correspondence to a detection of a start point of a detection of a no-tooth portion of a signal rotor. In the case of a control for injecting a fuel after the preset waiting period has elapsed, an output of a signal indicating a start point of an actual detection of the no-tooth portion by a waveform shaping portion is delayed due to the existence of the no-tooth portion. A control computer corrects the preset waiting period to be shorter by an amount corresponding the delay. Accordingly, an accuracy of a fuel injection start timing control is improved.
    Type: Grant
    Filed: August 24, 2007
    Date of Patent: January 12, 2010
    Assignees: Kabushiki Kaisha Toyota Jidoshokki, Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshiyuki Takahashi, Yuji Narita, Hisanobu Suzuki
  • Patent number: 7540146
    Abstract: Cylinder heads are each provided with a fuel injection valve, and an addition nozzle for adding fuel for activating an exhaust purifying catalyst to an exhaust manifold. There exists a non-exhaust period in which an exhaust gas does not flow out to exhaust passages from the exhaust manifolds during an operation of an engine. An ECU controls the addition nozzles in such a manner that the addition nozzles execute a fuel addition during periods except the non-exhaust period. Accordingly, the fuel added to the exhaust manifolds for activating the catalysts is avoided from collecting on a wall surface of an exhaust system without getting on an exhaust stream.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: June 2, 2009
    Assignees: Kabushiki Kaisha Toyotal Jidoshokki, Toyota Jidosha Kabushiki Kaisha
    Inventors: Yuji Narita, Yoshiyuki Takahashi, Kenji Kawai, Hisanobu Suzuki, Yoshitaka Nakamura
  • Publication number: 20090080687
    Abstract: A loudspeaker of high sound quality is achieved by improving rigidity of a material used for a diaphragm, a dust cap and a sub-cone. The diaphragm, the dust cap and the sub-cone of the loudspeaker are made of a paper beaten with the material containing bamboo fibers obtained from a bamboo tree aged one year or older, of which the fibers are finely beaten to an extent of micro-fibrillated form. The diaphragm and the dust cap are also made with a beaten paper containing at least 2 wt % of “A fibers” having stems of no greater than 30 ?m in diameter, and surfaces of the stems are fibrillated into shaggy branches having diameters of 1 ?m or less.
    Type: Application
    Filed: February 9, 2007
    Publication date: March 26, 2009
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kazuyoshi Mimura, Shinya Mizone, Kenichi Ajiki, Masahide Sumiyama, Toru Fujii, Yoshiyuki Takahashi, Nobuo Nakamura, Toshihiro Shimizu, Hitoshi Satou