Patents by Inventor Zhongmin Chen

Zhongmin Chen 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).

  • Publication number: 20120076684
    Abstract: There is disclosed a magnetic material having a composition in atomic percentage of: (MM1-aRa)uFe100-u-v-w-x-yYvMwTxBy wherein MM is a mischmetal or a synthetic equivalent thereof; R is Nd, Pr or a combination thereof; Y is a transition metal other than Fe; M is one or more of a metal selected from Groups 4 to 6 of the periodic table; and T is one or more of a metal other than B, selected from Groups 11 to 14 of the periodic table, wherein 0?a?1, 7?u?13, 0?v?20, 0?w?5; 0?x?5 and 4?y?12.
    Type: Application
    Filed: March 17, 2009
    Publication date: March 29, 2012
    Applicant: MAGNEQUENCH INTERNATIONAL INC.
    Inventors: Zhongmin Chen, James W. Herchenroeder
  • Publication number: 20100125937
    Abstract: The present invention discloses a urinal with a conductivity sensor, which includes the conductivity sensor arranged at the location where a reservoir of the urinal is curved and adapted to detect urine, a control unit (MCU), a power battery, and an electromagnetic valve adapted to control a discharge of water, wherein the conductivity sensor is adapted to detect a conductivity to determine whether urine is present. After the conductivity sensor detects presence of urine, the control unit opens the electromagnetic valve. The conductivity sensor includes electrodes dipped inside the location where the reservoir is curved to contact urine. The conductivity sensor further includes an anti-polarization-of-electrode circuit based upon the principle of an alternating power supply. Thus, the sensor can achieve more reliable sensing and a longer lifetime.
    Type: Application
    Filed: November 17, 2009
    Publication date: May 27, 2010
    Inventors: Zhongmin CHEN, Pengcheng GAO, Lin WANG
  • Publication number: 20100088812
    Abstract: A hidden sensing device and its urinal are disclosed. The hidden sensing device, which is attached on some sanitary installations, comprises a conductivity sensor for detecting urine and a Micro-programmed Control Unit (MCU) for processing signals, wherein said conductivity sensor has electrodes extending into urine. The device further includes a microwave sensor controlled by the MCU to detect human's movements. When the conductivity sensor has detected urine, the MCU will turn on the microwave sensor to detect the human's presence or departure.
    Type: Application
    Filed: October 9, 2009
    Publication date: April 15, 2010
    Inventors: Zhongmin Chen, Pengcheng Gao, Lin Wang, Jingwen Wu
  • Patent number: 7144463
    Abstract: The present invention relates to highly quenchable Fe-based rare earth magnetic materials that are made by rapid solidification process and exhibit good magnetic properties and thermal stability. More specifically, the invention relates to isotropic Nd—Fe—B type magnetic materials made from a rapid solidification process with a lower optimal wheel speed and a broader optimal wheel speed window than those used in producing conventional magnetic materials. The materials exhibit remanence (Br) and intrinsic coercivity (Hci) values of between 7.0 to 8.5 kG and 6.5 to 9.9 kOe, respectively, at room temperature. The invention also relates to process of making the materials and to bonded magnets made from the magnetic materials, which are suitable for direct replacement of anisotropic sintered ferrites in many applications.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: December 5, 2006
    Assignee: Magnequench, Inc.
    Inventors: Zhongmin Chen, Benjamin R. Smith, Bao-Min Ma, James W. Herchenroeder
  • Publication number: 20060076085
    Abstract: The present invention relates to highly quenchable Fe-based rare earth magnetic materials that are made by rapid solidification process and exhibit good magnetic properties and thermal stability. More specifically, the invention relates to isotropic Nd—Fe—B type magnetic materials made from a rapid solidification process with a lower optimal wheel speed and a broader optimal wheel speed window than those used in producing conventional magnetic materials. The materials exhibit remanence (Br) and intrinsic coercivity (Hci) values of between 7.0 to 8.5 kG and 6.5 to 9.9 kOe, respectively, at room temperature. The invention also relates to process of making the materials and to bonded magnets made from the magnetic materials, which are suitable for direct replacement of anisotropic sintered ferrites in many applications.
    Type: Application
    Filed: September 6, 2005
    Publication date: April 13, 2006
    Inventors: Zhongmin Chen, Benjamin Smith, Bao-Min Ma, James Herchenroeder
  • Patent number: 6979409
    Abstract: The present invention relates to highly quenchable Fe-based rare earth magnetic materials that are made by rapid solidification process and exhibit good magnetic properties and thermal stability. More specifically, the invention relates to isotropic Nd—Fe—B type magnetic materials made from a rapid solidification process with a lower optimal wheel speed and a broader optimal wheel speed window than those used in producing conventional magnetic materials. The materials exhibit remanence (Br) and intrinsic coercivity (Hci) values of between 7.0 to 8.5 kG and 6.5 to 9.9 kOe, respectively, at room temperature. The invention also relates to process of making the materials and to bonded magnets made from the magnetic materials, which are suitable for direct replacement of anisotropic sintered ferrites in many applications.
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: December 27, 2005
    Assignee: Magnequench, Inc.
    Inventors: Zhongmin Chen, Benjamin R. Smith, Bao-Min Ma, James W. Herchenroeder
  • Publication number: 20040154699
    Abstract: The present invention relates to highly quenchable Fe-based rare earth magnetic materials that are made by rapid solidification process and exhibit good magnetic properties and thermal stability. More specifically, the invention relates to isotropic Nd—Fe—B type magnetic materials made from a rapid solidification process with a lower optimal wheel speed and a broader optimal wheel speed window than those used in producing conventional magnetic materials. The materials exhibit remanence (Br) and intrinsic coercivity (Hci) values of between 7.0 to 8.5 kG and 6.5 to 9.9 kOe, respectively, at room temperature. The invention also relates to process of making the materials and to bonded magnets made from the magnetic materials, which are suitable for direct replacement of anisotropic sintered ferrites in many applications.
    Type: Application
    Filed: February 6, 2003
    Publication date: August 12, 2004
    Inventors: Zhongmin Chen, Benjamin R. Smith, Bao-Min Ma, James W. Herchenroeder
  • Publication number: 20040079445
    Abstract: The present invention relates to magnetic materials made by rapid solidification processes which exhibit high remanence and intrinsic coercivity values and low flux-aging loss. More specifically, the invention relates to isotropic Nd—Fe—B type materials with remanence and intrinsic coercivity values of greater than 8.0 kG and 10.0 kOe, respectively, at room temperature, and bonded magnets made from the magnetic materials with low flux-aging loss and are suitable for high temperature applications. The invention also relates to methods of making the magnetic materials and the bonded magnets.
    Type: Application
    Filed: October 24, 2002
    Publication date: April 29, 2004
    Inventors: Zhongmin Chen, Benjamin R. Smith, Bao-Min Ma