Patents by Inventor Takao Sekino

Takao Sekino 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: 7244318
    Abstract: A blended powder including a first powder containing an R2T14B phase as a main phase, and a second powder containing an R2T17 phase at 25 wt % or more of the whole is prepared. Herein, R is at least one element selected from the group consisting of all rare-earth elements and Y (yttrium), T is at least one element selected from the group consisting of all transition elements, and Q is at least one element selected from the group consisting of B (boron) and C (carbon). The blended powder is sintered, so as to manufacture a permanent magnet having a structure in which a rare-earth element included in the second powder is concentrated in a grain surgace region of a main phase.
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: July 17, 2007
    Assignee: Neomax Co., Ltd.
    Inventors: Takao Sekino, Yuji Kaneko
  • Patent number: 7048808
    Abstract: The present invention provides a rare-earth sintered magnet exhibiting desirable magnetic properties in which the amount of Nd and/or Pr forming a non-magnetic phase in a grain boundary phase is reduced. Specifically, the present invention provides a rare-earth sintered magnet having a composition of (R1x+R2y)T100-x-y-zQz where R1 is at least one element selected from the group consisting of all rare-earth elements excluding La (lanthanum), Y (yttrium) and Sc (scandium); R2 is at least one element selected from the group consisting of La, Y and Sc; T is at least one element selected from the group consisting of all transition elements; Q is at least one element selected from the group consisting of B and C, and including, as a main phase, a crystal grain of an Nd2Fe14B crystalline structure, wherein: molar fractions x, y and z satisfy 8?x?18 at %, 0.1?y?3.
    Type: Grant
    Filed: October 1, 2001
    Date of Patent: May 23, 2006
    Assignee: Neomax Co., Ltd.
    Inventors: Yuji Kaneko, Katsuya Taniguchi, Takao Sekino
  • Publication number: 20040050454
    Abstract: A blended powder including a first powder containing an R2T14B phase as a main phase, and a second powder containing an R2T17 phase at 25 wt % or more of the whole is prepared. Herein, R is at least one element selected from the group consisting of all rare-earth elements and Y (yttrium), T is at least one element selected from the group consisting of all transition elements, and Q is at least one element selected from the group consisting of B (boron) and C (carbon). The blended powder is sintered, so as to manufacture a permanent magnet having a structure in which a rare-earth element included in the second powder is concentrated in a grain surgace region of a main phase.
    Type: Application
    Filed: July 30, 2003
    Publication date: March 18, 2004
    Inventors: Takao Sekino, Yuji Kaneko
  • Publication number: 20020062884
    Abstract: The present invention provides a rare-earth sintered magnet exhibiting desirable magnetic properties in which the amount of Nd and/or Pr forming a non-magnetic phase in a grain boundary phase is reduced. Specifically, the present invention provides a rare-earth sintered magnet having a composition of (R1x+R2y)T100-x-y-zQz where R1 is at least one element selected from the group consisting of all rare-earth elements excluding La (lanthanum), Y (yttrium) and Sc (scandium); R2 is at least one element selected from the group consisting of La, Y and Sc; T is at least one element selected from the group consisting of all transition elements; Q is at least one element selected from the group consisting of B and C, and including, as a main phase, a crystal grain of an Nd2Fe14B crystalline structure, wherein: molar fractions x, y and z satisfy 8≦x≦18 at %, 0.1≦y≦3.
    Type: Application
    Filed: October 1, 2001
    Publication date: May 30, 2002
    Inventors: Yuji Kaneko, Katsuya Taniguchi, Takao Sekino
  • Patent number: 5343333
    Abstract: An electrically remote-controlled mirror assembly having a pair of plungers driven by first and second motors for tilting the mirror about the horizontal and vertical axes, respectively, and for quick-rear-viewing, there is provided a mirror driving mechanism by which the mirror can be tilted further through a predetermined angle beyond the predetermined range of angulation for the normal car moving to an angular position suitable for viewing the rear wheel of the car and thereafter returned to its initial predetermined angular position.
    Type: Grant
    Filed: August 19, 1992
    Date of Patent: August 30, 1994
    Assignee: Ichikoh Industries, Ltd.
    Inventors: Yoshirou Nagayama, Yoshihiro Kubo, Takao Sekino
  • Patent number: 5274505
    Abstract: An improved electrical remote-control mirror assembly in which a externally threaded plunger (54) installed to a mirror body (3) is moved by a motor (102) to adjust the support angle of a mirror (4) secured to the mirror body. In addition to the drive system using the motor (102), another motor (103) is provided which operates independently of the motor (102) to quickly rotate the externally threaded plunger (52) forwardly and reversely. Thus, the mirror assembly according to the present invention is imparted the conventional function to adjust the mirror angle and a function to quickly tilt the mirror by means of the independent driving means. The above-mentioned independently driving means permits to quickly tilt down the mirror body for viewing the reflected image of the car rear wheel and also to quickly return the mirror body (3) to the initial position thereof.
    Type: Grant
    Filed: October 29, 1991
    Date of Patent: December 28, 1993
    Assignee: Ichikoh Industries, Ltd.
    Inventors: Yoshirou Nagayama, Takao Sekino
  • Patent number: 5226034
    Abstract: The electrically remote-controlled type mirror assembly has a pair of plungers to tilt the mirror body supporting the mirror horizontally and vertically, respectively, within certain pivoting angles. The mirror assembly has a sliding mechanism including another motor to axially slide at least one of these plungers beyond said certain pivoting angles of the mirror body. The sliding mechanism is so arranged as to have no influence on the adjustment of the mirror angle within the certain pivoting angles of the mirror body. Thus, the mirror posture can be changed quickly from the mirror angle adjusted within the certain pivoting angle for ordinary car driving to the mirror angle with which the mirror is tilted further downward, and also the initially adjusted mirror angle can be restored accurately.
    Type: Grant
    Filed: December 3, 1991
    Date of Patent: July 6, 1993
    Assignee: Ichikoh Industries, Ltd.
    Inventors: Yoshirou Nagayama, Takao Sekino
  • Patent number: 4101169
    Abstract: A seat structure includes a stationary base member fixed to the vehicle, a movable support member slidable on the stationary base member for carrying a seat cushion with a tiltable set back, seat position memorizing means, seat locking means for locking the movable support member to the stationary base member, biasing means for moving the movable support member in the forward direction of the vehicle when the seat locking means is disengaged, and actuating means for actuating the seat locking means in association with the seat position memorizing means in response to the tilting movements of the seat back.
    Type: Grant
    Filed: February 25, 1977
    Date of Patent: July 18, 1978
    Assignee: Nissan Motor Company, Limited
    Inventors: Masakazu Muraishi, Takao Sekino