Patents by Inventor Yukiko Nishikawa

Yukiko Nishikawa 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).

  • Gradient magnetic-field coil and magnetic-resonance imaging apparatus
    Patent number: 10197649
    Abstract: A gradient magnetic-field coil according to an embodiment includes multiple units of coil members and a connecting member. In each of the coil members, a coil pattern is formed with a first nonmagnetic metal. The connecting member connects the coil members with each other. Moreover, at least a part of the connecting member is formed with a second nonmagnetic metal that is different from the first nonmagnetic metal.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: February 5, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Yoshitomo Sakakura, Yukiko Nishikawa, Masatoshi Yamashita, Tetsuya Kobayashi
  • GRADIENT MAGNETIC-FIELD COIL AND MAGNETIC-RESONANCE IMAGING APPARATUS
    Publication number: 20150276896
    Abstract: A gradient magnetic-field coil according to an embodiment includes multiple units of coil members and a connecting member. In each of the coil members, a coil pattern is formed with a first nonmagnetic metal. The connecting member connects the coil members with each other. Moreover, at least a part of the connecting member is formed with a second nonmagnetic metal that is different from the first nonmagnetic metal.
    Type: Application
    Filed: March 25, 2015
    Publication date: October 1, 2015
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Yoshitomo SAKAKURA, Yukiko NISHIKAWA, Masatoshi YAMASHITA, Tetsuya KOBAYASHI
  • Polycarboxylic acid concrete admixture
    Patent number: 7638563
    Abstract: The polycarboxylic acid concrete admixture of the present invention exhibits properties such as decreasing the concrete viscosity, improving the slump-retaining ability, and suppressing bleeding water, and is improved in the ability to cement compositions or the like. The above-mentioned polycarboxylic acid concrete admixture comprises a polycarboxylic acid polymer containing a polyalkylene glycol in the side chain, wherein the polycarboxylic acid polymer is obtained by polymerizing monomer components containing an alkyl (meth)acrylate monomer and a specific polyalkylene glycol unsaturated monomer and unsaturated carboxylic acid (salt) monomer, and it has a specific weight average molecular weight.
    Type: Grant
    Filed: May 7, 2004
    Date of Patent: December 29, 2009
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Tomotaka Nishikawa, Toru Uno, Hirokazu Yamamoto, Yukiko Nishikawa, Hiromichi Tanaka, Tomiyasu Ueta
  • Polycarboxylic Acid Concrete Admixture
    Publication number: 20080027177
    Abstract: The polycarboxylic acid concrete admixture of the present invention exhibits properties such as decreasing the concrete viscosity, improving the slump-retaining ability, and suppressing bleeding water, and is improved in the ability to cement compositions or the like. The above-mentioned polycarboxylic acid concrete admixture comprises a polycarboxylic acid polymer containing a polyalkylene glycol in the side chain, wherein the polycarboxylic acid polymer is obtained by polymerizing monomer components containing an alkyl (meth)acrylate monomer and a specific polyalkylene glycol unsaturated monomer and unsaturated carboxylic acid (salt) monomer, and it has a specific weight average molecular weight.
    Type: Application
    Filed: May 7, 2004
    Publication date: January 31, 2008
    Applicant: NIPPON SHOKUBAI CO., LTD.
    Inventors: Tomotaka Nishikawa, Toru Uno, Hirokazu Yamamoto, Yukiko Nishikawa, Hiromichi Tanaka, Tomiyasu Ueta