Patents by Inventor Mina Kumagai

Mina Kumagai 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).

  • Thin film and nanocrystals of europium(II) compound doped with metal ions
    Patent number: 9280002
    Abstract: The present invention relates to Eu (II) compound nanocrystals doped with transition metal ions. Such a constitution generates quantum size effects of an Eu (II) compound nanoparticle, while the transition metal ions can affect a magnetooptical property of the Eu (II) compound nanoparticle. Thus, the magnetooptical property can be improved.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: March 8, 2016
    Assignee: NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
    Inventors: Yasuchika Hasegawa, Masashi Maeda, Mina Kumagai, Koji Fushimi
  • Composite thin film and composite nanocrystals containing europium (II) compound and metal
    Patent number: 9261718
    Abstract: The present invention is produced by a composite with an Eu (II) compound nanoparticle and a metal nanoparticle. Such production generates quantum size effects of the Eu (II) compound nanoparticle, while the surface plasmon of the metal nanoparticle can be used. Thus, the magnetooptical property can be improved. In addition, a thin film may be produced by a composite with an Eu (II) compound nanoparticle and a metal nanoparticle.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: February 16, 2016
    Assignee: National University Corporation Hokkaido University
    Inventors: Yasuchika Hasegawa, Akira Kawashima, Mina Kumagai, Koji Fushimi
  • THIN FILM AND NANOCRYSTALS OF EUROPIUM(II) COMPOUND DOPED WITH METAL IONS
    Publication number: 20140071527
    Abstract: The present invention relates to Eu (II) compound nanocrystals doped with transition metal ions. Such a constitution generates quantum size effects of an Eu (II) compound nanoparticle, while the transition metal ions can affect a magnetooptical property of the Eu (II) compound nanoparticle. Thus, the magnetooptical property can be improved.
    Type: Application
    Filed: March 1, 2012
    Publication date: March 13, 2014
    Applicant: NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
    Inventors: Yasuchika Hasegawa, Masashi Maeda, Mina Kumagai, Koji Fushimi
  • COMPOSITE THIN FILM AND COMPOSITE NANOCRYSTALS CONTAINING EUROPIUM(II) COMPOUND AND METAL
    Publication number: 20140055855
    Abstract: The present invention is produced by a composite with an Eu (II) compound nanoparticle and a metal nanoparticle. Such production generates quantum size effects of the Eu (II) compound nanoparticle, while the surface plasmon of the metal nanoparticle can be used. Thus, the magnetooptical property can be improved. In addition, a thin film may be produced by a composite with an Eu (II) compound nanoparticle and a metal nanoparticle.
    Type: Application
    Filed: March 1, 2012
    Publication date: February 27, 2014
    Applicant: National University Corporation Hokkaido University
    Inventors: Yasuchika Hasegawa, Akira Kawashima, Mina Kumagai, Koji Fushimi