Patents by Inventor Yoshiyuki Oishi

Yoshiyuki Oishi 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: 11421301
    Abstract: This free-cutting copper alloy casting contains: 76.0-79.0% Cu, 3.1-3.6% Si, 0.36-0.85% Sn, 0.06-0.14% P, 0.022-0.10% Pb, with the remainder being made up of Zn and unavoidable impurities. This composition satisfies the following relations: 75.5?f1=Cu+0.8×Si?7.5×Sn+P+0.5×Pb?78.7, 60.8?f2=Cu?4.5×Si—0.8×Sn?P+0.5×Pb?62.2, 0.09?f3=P/Sn?0.35. The area ratios (%) of the constituent phases satisfy the following relations, 30???63, 0???2.0, 0???0.3, 0???2.0, 96.5?f4=?+?, 99.3?f5=?+?+?+?, 0?f6=?+??3.0, and 37?f7=1.05×?+6×?1/2+0.5×??72. The ? phase is present within the ? phase, the long side of the ? phase does not exceed 50 ?m, and the long side of the ? phase does not exceed 25 ?m.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: August 23, 2022
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Keiichiro Oishi, Kouichi Suzaki, Shinji Tanaka, Yoshiyuki Goto
  • Publication number: 20220251299
    Abstract: A method for producing a polybenzimidazole precursor polyamide including a repeating unit represented by the following formula (2): wherein Rf is —SO2—, —O—, —CO—, an alkylene group optionally containing a substituent, or a group represented by the following formula: two Xs are each individually a monovalent organic group; and R1 is a divalent organic group, the method including: a step (1-1) of polymerizing a tetramine compound (3) and a dicarboxylic acid derivative compound (4) as defined herein to provide the polybenzimidazole precursor polyamide.
    Type: Application
    Filed: April 25, 2022
    Publication date: August 11, 2022
    Applicants: DAIKIN INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION, IWATE UNIVERSITY
    Inventors: Yoshiyuki OISHI, Tsuyoshi Noguchi, Tadashi Kanbara
  • Patent number: 11312840
    Abstract: An organic-inorganic hybrid composition including a polymer having a triazine ring structure in a main chain of the polymer (A); an inorganic particulate (B); and a surface-treating agent having a triazine ring structure represented by Formula (1)(C): wherein, in Formula (1), R1 is a carboxyl group, a phosphoric acid group, a sulfo group, or a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted alkynyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted amino group, wherein a number median diameter (Dn50) of the inorganic particulate (B) is greater than or equal to about 1 nm and less than or equal to about 20 nm.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: April 26, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tomoyuki Kikuchi, Yoshiyuki Oishi, Ryosuke Kamitani, Yukika Yamada
  • Patent number: 11180612
    Abstract: A triazine ring-containing polymer including a repeating unit represented by Formula (1) and having a number average molecular weight of greater than about 20000 g/mol and less than or equal to about 50000 g/mol: wherein, in Formula (1), R1 is each independently a C1 to C5 alkyl group and R2 is each independently a divalent group having at least one aromatic hydrocarbon group.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: November 23, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yoshiyuki Oishi, Ryosuke Kamitani, Tomoyuki Kikuchi, Yukika Yamada
  • Publication number: 20200362112
    Abstract: A triazine ring-containing polymer including a structural unit represented by General Formula 1: *-[A-B-]-*??General Formula 1 wherein, in General Formula 1, A is represented by General Formula 2, B is represented by General Formula 3, and * indicates a point linked to another group or structural unit: wherein, in General Formula 2 and General Formula 3, L, R1 to R6, m1, n1, and * are the same as defined in the detailed description.
    Type: Application
    Filed: May 13, 2020
    Publication date: November 19, 2020
    Inventors: Yoshiyuki OISHI, Eigo MIYAZAKI, Tomoyuki KIKUCHI, Yukika YAMADA
  • Publication number: 20200291181
    Abstract: A fluorine-containing polybenzimidazole containing a repeating unit represented by the following formula (1): wherein Rf is —SO2—, —O—, —CO—, an alkylene group optionally containing a substituent, or a group represented by the following: wherein two Xs are each individually a hydrogen atom or a monovalent organic group; and R1 is a divalent organic group. Also disclosed is a polybenzimidazole precursor polyamide, a polybenzimidazole production method, film, flexible wiring board, printed circuit board, and polymer electrolyte membrane.
    Type: Application
    Filed: September 14, 2018
    Publication date: September 17, 2020
    Applicants: DAIKIN INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION, IWATE UNIVERSITY
    Inventors: Yoshiyuki OISHI, Tsuyoshi NOGUCHI, Tadashi KANBARA
  • Patent number: 10717866
    Abstract: Disclosed an organic-inorganic hybrid composition including a polymer (A) including a triazine ring structure represented by General Formula (1) in a polymer main chain structure; wherein, in the formula, R1 is a substituted or unsubstituted alkyl group, aryl group, aralkyl group, amino group, arylamino group, alkylthio group, or arylthio group, an inorganic particulate (B); and a surface-treatment agent (C) including an acidic functional group wherein the polymer (A) is a thermoplastic polymer having a glass transition temperature (Tg) and a number median diameter (Dn50) of the inorganic particulate (B) is greater than or equal to about 1 nm and less than or equal to about 20 nm, and an article and an optical component including the organic-inorganic hybrid composition.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: July 21, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yoshiyuki Oishi, Hiroshi Miyao, Tomoyuki Kikuchi, Yukika Yamada, Ryosuke Kamitani
  • Publication number: 20200062927
    Abstract: An organic-inorganic hybrid composition including a polymer having a triazine ring structure in a main chain of the polymer (A); an inorganic particulate (B); and a surface-treating agent having a triazine ring structure represented by Formula (1)(C): wherein, in Formula (1), R1 is a carboxyl group, a phosphoric acid group, a sulfo group, or a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted alkynyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted amino group, wherein a number median diameter (Dn50) of the inorganic particulate (B) is greater than or equal to about 1 nm and less than or equal to about 20 nm.
    Type: Application
    Filed: August 23, 2019
    Publication date: February 27, 2020
    Inventors: Tomoyuki KIKUCHI, Yoshiyuki OISHI, Ryosuke KAMITANI, Yukika YAMADA
  • Publication number: 20200062907
    Abstract: Disclosed is a triazine ring-containing polymer including a repeating unit represented by Formula (1) and has a number average molecular weight of greater than about 20000 g/mol and less than or equal to about 50000 g/mol: wherein, in Formula (1), R1 is each independently a C1 to C5 alkyl group and R2 is each independently a divalent group having at least one aromatic hydrocarbon group.
    Type: Application
    Filed: August 23, 2019
    Publication date: February 27, 2020
    Inventors: Yoshiyuki OISHI, Ryosuke KAMITANI, Tomoyuki KIKUCHI, Yukika YAMADA
  • Publication number: 20180244915
    Abstract: Disclosed an organic-inorganic hybrid composition including a polymer (A) including a triazine ring structure represented by General Formula (1) in a polymer main chain structure; wherein, in the formula, R1 is a substituted or unsubstituted alkyl group, aryl group, aralkyl group, amino group, arylamino group, alkylthio group, or arylthio group, an inorganic particulate (B); and a surface-treatment agent (C) including an acidic functional group wherein the polymer (A) is a thermoplastic polymer having a glass transition temperature (Tg) and a number median diameter (Dn50) of the inorganic particulate (B) is greater than or equal to about 1 nm and less than or equal to about 20 nm, and an article and an optical component including the organic-inorganic hybrid composition.
    Type: Application
    Filed: February 23, 2018
    Publication date: August 30, 2018
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Yoshiyuki OISHI, Hiroshi Miyao, Tomoyuki Kikuchi, Yukika Yamada, Ryosuke Kamitani
  • Patent number: 9556312
    Abstract: A polyimide precursor, a polyimide using the polyimide precursor, and a polyimide film using the polyimide. The polyimide film has excellent adhesiveness to a metal layer or an adhesive, and has improved heat resistance. The polyimide solution may be used as a coating material.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: January 31, 2017
    Assignees: NATIONAL UNIVERSITY CORPORATION IWATE UNIVERSITY, UBE INDUSTRIES, LTD.
    Inventors: Yoshiyuki Oishi, Shin-ichiro Kohama, Nobuharu Hisano
  • Patent number: 9511565
    Abstract: A polyimide precursor for obtaining a polyimide film having excellent adhesiveness to metals and improved transmittance in the UV-visible range, a polyimide in which the polyimide precursor is used, a polyimide film in which the polyimide is used, and a method for manufacturing a triazine compound used for manufacturing the polyimide precursor, polyimide film and polyimide.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: December 6, 2016
    Assignees: UBE INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION IWATE UNIVERSITY
    Inventors: Yoshiyuki Oishi, Nobuharu Hisano, Shin-ichiro Kohama, Taizou Murakami, Hiroaki Yamaguchi
  • Publication number: 20150132591
    Abstract: A polyimide precursor, a polyimide using the polyimide precursor, and a polyimide film using the polyimide. The polyimide precursor comprises a structural unit represented by general formula (AI): in which A is tetravalent aromatic group or aliphatic group, B is divalent aromatic group, and each R2 independently represents hydrogen, an alkyl group having 1 to 6 carbon atoms, or an alkylsilyl group having 3 to 9 carbon atoms, in which B in general formula (AI) includes a triazine moiety represented by following formula (AB1): in which R1 represents hydrogen, an alkyl group having 1 to 6 carbon atoms or an aromatic group, and R3 represents hydrogen, methyl or ethyl.
    Type: Application
    Filed: May 14, 2013
    Publication date: May 14, 2015
    Inventors: Yoshiyuki Oishi, Shin-ichiro Kohama, Nobuharu Hisano
  • Publication number: 20140255710
    Abstract: Disclosed are a polyimide precursor for obtaining a polyimide film having excellent adhesiveness to metals and improved transmittance in the UV-visible range, a polyimide in which the polyimide precursor is used, a polyimide film in which the polyimide is used, and a method for manufacturing triazine compound used for manufacturing these. The polyimide precursor contains a structural unit represented by general formula (I): in which A is a tetravalent aromatic group or aliphatic group and B is a divalent aromatic group, wherein B in general formula (I) comprises a triazine moiety represented by following formula (B1): in which R1 denotes hydrogen or alkyl or aryl having 1 to 12 carbon atoms, and R2 denotes hydrogen or alkyl or aryl having 1 to 12 carbon atoms.
    Type: Application
    Filed: February 21, 2013
    Publication date: September 11, 2014
    Applicants: NATIONAL UNIVERSITY CORPORATION IWATE UNIVERSITY, UBE INDUSTRIES, LTD.
    Inventors: Yoshiyuki Oishi, Nobuharu Hisano, Shin-ichiro Kohama, Taizou Murakami
  • Publication number: 20120308816
    Abstract: Disclosed is a polyimide film having improved adhesiveness to an adhesive and/or adherence to a metal layer. The polyimide film has at least a polyimide layer (b) and a polyimide layer (a) formed contacting the polyimide layer (b), wherein the polyimide layer (a) is a polyimide formed from a tetracarboxylic dianhydride component and a diamine component containing a diamine compound represented by general formula (1): wherein R1 denotes a hydrogen atom, an alkyl group having 1 to 12 carbon atoms or an aryl group, and R2 denotes an alkyl group having 1 to 12 carbon atoms or an aryl group.
    Type: Application
    Filed: February 10, 2011
    Publication date: December 6, 2012
    Applicant: UBE INDUSTRIES, LTD.
    Inventors: Shin-ichiro Kohama, Nobuharu Hisano, Hiroaki Yamaguchi, Yoshiyuki Oishi, Toru Miura, Tadahiro Yokozawa, Masafumi Kohda, Kosuke Oishi
  • Patent number: 4820793
    Abstract: An aromatic polyamide of sufficiently high molecular weight is prepared by reacting a diphenyldiamino compound having a hydroxyl or siloxyl group in each phenyl group and a Si-containing substituent in each amino group, e.g. 2,2-bis(3-trimethylsilylamino-4-trimethylsiloxyphenyl) propane, with an aromatic dicarboxylic acid dihalide in an organic solvent. The polyamide can be converted into a polybenzoxazole by a dehydrating and cyclizing reaction at 100.degree.-500.degree. C.
    Type: Grant
    Filed: May 28, 1987
    Date of Patent: April 11, 1989
    Assignee: Central Glass Company, Limited
    Inventors: Yoshio Imai, Masaaki Kakimoto, Yoshiyuki Oishi, Yutaka Maruyama