Patents by Inventor Zhenyuan Liu

Zhenyuan Liu 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).

  • SAMARIUM-IRON-BASED RARE EARTH PERMANENT MAGNET MATERIAL CONTAINING GRAIN BOUNDARY PHASE AND PREPARATION METHOD THEREFOR AND USE THEREOF
    Publication number: 20250137106
    Abstract: The present invention provides a samarium-iron-based rare earth permanent magnet material containing a grain boundary phase, having a chemical formula of SmaFebCocTidMe, wherein 0.5?a?1.5, 7.5?b?9.0, 2.0?c?3.0, 0.5?d?1.5, 0.1?e?2.0, and M is selected from the group consisting of B, C, Al, Si and a combination thereof. The present invention further provides a method for preparing a samarium-iron-based rare earth permanent magnet material containing a grain boundary phase, comprising providing raw materials of the alloy, melting and casting the raw materials to obtain a master alloy; and subjecting the master alloy to rapid quenching and melt-spinning to obtain the samarium-iron-based rare earth permanent magnet material containing the grain boundary phase. In the method, a problem that a non-magnetic grain boundary phase cannot be formed in the samarium-iron-based rare earth permanent magnet material due to the lack of liquid phase is solved, and the purity of the main phase is improved.
    Type: Application
    Filed: April 3, 2023
    Publication date: May 1, 2025
    Applicant: NINGBO INSTITUTE OF MATERIALS TECHNOLOGY AND ENGINEERING, CHINESE ACADEMY OF SCIENCES
    Inventors: Zhenyuan LIU, Zhuang LIU, Haibo FENG, Renjie CHEN, Aru YAN, Xiaolei GAO, Chaoqun ZHU, Wenxin CHENG
  • Light emitting device with variable volume
    Patent number: 8217594
    Abstract: This invention provides a light emitting device with variable volume. The light emitting device includes a main body with variable volume, a sensor, a light emitting element, and a controller. The sensor is disposed in the main body for generating a volume measuring signal. The light emitting element is disposed in the main body. The controller is coupled with the light emitting element and the sensor. The controller controls brightness of the light emitting element according to the volume measuring signal.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: July 10, 2012
    Assignees: Protek (shanghai) Limited, Pegatron Corporation
    Inventors: Lu Hu, Zhenyuan Liu, Wen-Chi Kuo
  • LIGHT EMITTING DEVICE WITH VARIABLE VOLUME
    Publication number: 20110074298
    Abstract: This invention provides a light emitting device with variable volume. The light emitting device includes a main body with variable volume, a sensor, a light emitting element, and a controller. The sensor is disposed in the main body for generating a volume measuring signal. The light emitting element is disposed in the main body. The controller is coupled with the light emitting element and the sensor. The controller controls brightness of the light emitting element according to the volume measuring signal.
    Type: Application
    Filed: July 27, 2010
    Publication date: March 31, 2011
    Inventors: LU HU, ZHENYUAN LIU, WEN-CHI KUO