Patents by Inventor Ruoshi CHEN

Ruoshi 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).

  • Aliphatic polyester resin powder suitable for selective laser sintering and its preparation method
    Patent number: 10787546
    Abstract: A method for preparing an aliphatic polyester resin powder includes the steps of a) heat dissolving a crystalline aliphatic polyester resin in an organic solvent to obtain an aliphatic polyester resin solution; b) cooling the aliphatic polyester resin solution to precipitate a solid, thereby obtaining a solid-liquid mixture; c) optionally adding an adjuvant to the solid-liquid mixture and mixing; and d) conducting solid-liquid separation and drying to obtain an aliphatic polyester resin powder suitable for selective laser sintering. The crystalline aliphatic polyester resin powder obtained has good antioxidant property, good powder flowability, moderate size, smooth surface, suitable bulk density, and suitable dispersibility and particle size distribution. The aliphatic polyester resin powder is particularly suitable for selective laser sintering method.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: September 29, 2020
    Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION
    Inventors: Jianye Liu, Liqiu Chu, Yun Lyu, Shijun Zhang, Liying Zhang, Hao Zou, Mu Dong, Dali Gao, Baige Chou, Yiqing Bai, Jingbo Shao, Meng Xu, Yihui Xu, Ruoshi Chen
  • ALIPHATIC POLYESTER RESIN POWDER SUITABLE FOR SELECTIVE LASER SINTERING AND ITS PREPARATION METHOD
    Publication number: 20180230274
    Abstract: A method for preparing an aliphatic polyester resin powder includes the steps of a) heat dissolving a crystalline aliphatic polyester resin in an organic solvent to obtain an aliphatic polyester resin solution; b) cooling the aliphatic polyester resin solution to precipitate a solid, thereby obtaining a solid-liquid mixture; c) optionally adding an adjuvant to the solid-liquid mixture and mixing; and d) conducting solid-liquid separation and drying to obtain an aliphatic polyester resin powder suitable for selective laser sintering. The crystalline aliphatic polyester resin powder obtained has good antioxidant property, good powder flowability, moderate size, smooth surface, suitable bulk density, and suitable dispersibility and particle size distribution. The aliphatic polyester resin powder is particularly suitable for selective laser sintering method.
    Type: Application
    Filed: April 13, 2018
    Publication date: August 16, 2018
    Inventors: Jianye LIU, Liqiu CHU, Yun LYU, Shijun ZHANG, Liying ZHANG, Hao ZOU, Mu DONG, Dali GAO, Baige CHOU, Yiqing BAI, Jingbo SHAO, Meng XU, Yihui XU, Ruoshi CHEN