Patents by Inventor Kazuhisa Kanefuji

Kazuhisa Kanefuji 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).

  • Ferrite particles for bonded magnets, resin composition for bonded magnets, and molded product comprising the same
    Patent number: 9249033
    Abstract: The present invention relates to ferrite particles for bonded magnets and a resin composition for bonded magnets which exhibit a good moldability, in particular, a good mechanical strength even when rapidly quenched upon injection-cooling, and is capable of producing a bonded magnet molded product having excellent magnetic properties, as well as a bonded magnet molded product such as a magnet roll using the ferrite particles and the resin composition. There are provided ferrite particles for bonded magnets which comprise phosphorus adsorbed and/or incorporated in ferrite, in which a content of the phosphorus in the ferrite is 120 to 5000 mg/kg (0.012 to 0.50% by weight) in terms of P; a resin composition for bonded magnets; and a magnet roll.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: February 2, 2016
    Assignee: TODA KOGYO CORPORATION
    Inventors: Yasuhiko Fujii, Yasushi Nishio, Kazuhisa Kanefuji, Tatsuya Ishida, Shigeru Takaragi
  • FERRITE PARTICLES FOR BONDED MAGNETS, RESIN COMPOSITION FOR BONDED MAGNETS, AND MOLDED PRODUCT COMPRISING THE SAME
    Publication number: 20100108935
    Abstract: The present invention relates to ferrite particles for bonded magnets and a resin composition for bonded magnets which exhibit a good moldability, in particular, a good mechanical strength even when rapidly quenched upon injection-cooling, and is capable of producing a bonded magnet molded product having excellent magnetic properties, as well as a bonded magnet molded product such as a magnet roll using the ferrite particles and the resin composition. There are provided ferrite particles for bonded magnets which comprise phosphorus adsorbed and/or incorporated in ferrite, in which a content of the phosphorus in the ferrite is 120 to 5000 mg/kg (0.012 to 0.50% by weight) in terms of P; a resin composition for bonded magnets; and a magnet roll.
    Type: Application
    Filed: March 14, 2008
    Publication date: May 6, 2010
    Inventors: Yasuhiko Fujii, Yasushi Nishio, Kazuhisa Kanefuji, Tatsuya Ishida, Shigeru Takaragi
  • Sludge dispersing agent for fuel oil and fuel oil composition containing the same
    Patent number: 5372614
    Abstract: A sludge dispersing agent for fuel oils includes a polymer having at least one >C.dbd.N.sup.+ < bond in its molecule and at least one compound selected from the group consisting of long-chain alkyl phosphates and alkyl sulfosuccinates and salts thereof.
    Type: Grant
    Filed: March 29, 1993
    Date of Patent: December 13, 1994
    Assignees: Nippon Zeon Co., Ltd., Nippon Oil Company
    Inventors: Shizuo Kitahara, Kazuhisa Kanefuji, Akio Oda, Hiromoto Inoura, Shigeru Kinomoto