Patents by Inventor Xiuhua Wang

Xiuhua Wang 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).

  • METHOD FOR PREPARING PET/PTT PARALLEL COMPLEX FILAMENT WITH HIGH SELF-CRIMPINESS
    Publication number: 20220205141
    Abstract: The present invention discloses a method for preparing a PET/PTT parallel complex filament with high self-crimpiness, wherein PET and PTT are sliced, dried and crystallized, and then fused separately and subjected to extrusion molding through a parallel-type spinneret plate; oil is applied after cooling; then level 1-3 drafting and heat setting treatment are adopted; and during drafting, a total drafting rate is controlled to be 3 to 3.5, wherein the level-1 drafting rate is 2.8 to 3.0 at a temperature controlled to be 75 to 80° C., according to the method for preparing the PET/PTT parallel complex filament with high self-crimpiness, methods like multi-level drafting for increasing the drafting rate are adopted, and the effects of improving the fiber strength, moderately lowering the breaking elongation, and greatly improving the self-crimpiness are achieved.
    Type: Application
    Filed: August 25, 2020
    Publication date: June 30, 2022
    Inventors: Xuzhen ZHANG, Wenxing CHEN, Yanlin SUN, Xiuhua WANG, Shaobo LIU, Xueyan LIN, Shunli XIAO
  • Type of energy-absorbing rock bolt device with umbrella-shaped structure
    Patent number: 11268383
    Abstract: The present invention discloses a type of energy-absorbing rock bolt device with umbrella-shaped structure, which consists of a body of bolt, and one end of the said body of bolt is equipped with a preloaded system, as well as the other end of the said body of bolt is equipped with the first support system, in addition, the said body of bolt is equipped with several second support systems, and the said second support system is located between the said preloaded system and the said first support system; meanwhile, the said second support system consists of the first umbrella-shaped support system and the second umbrella support system.
    Type: Grant
    Filed: February 4, 2021
    Date of Patent: March 8, 2022
    Assignee: INSTITUTE OF GEOLOGY AND GEOPHYSICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Songfeng Guo, Shengwen Qi, Shishu Zhang, Xingdong Ma, Guoqing Yuan, Xiuhua Wang, Bowen Zheng, Yu Zou, Xiaolin Huang, Ning Liang, Hang Li, Yubo Liu, Jianxian He, Xianglong Yao, Daping Tai, Guangming Luo
  • TYPE OF ENERGY-ABSORBING ROCK BOLT DEVICE WITH UMBRELLA-SHAPED STRUCTURE
    Publication number: 20220010681
    Abstract: The present invention discloses a type of energy-absorbing rock bolt device with umbrella-shaped structure, which consists of a body of bolt, and one end of the said body of bolt is equipped with a preloaded system, as well as the other end of the said body of bolt is equipped with the first support system, in addition, the said body of bolt is equipped with several second support systems, and the said second support system is located between the said preloaded system and the said first support system; meanwhile, the said second support system consists of the first umbrella-shaped support system and the second umbrella support system.
    Type: Application
    Filed: February 4, 2021
    Publication date: January 13, 2022
    Inventors: Songfeng Guo, Shengwen Qi, Shishu Zhang, Xingdong Ma, Guoqing Yuan, Xiuhua Wang, Bowen Zheng, Yu Zou, Xiaolin Huang, Ning Liang, Hang Li, Yubo Liu, Jianxian He, Xianglong Yao, Daping Tai, Guangming Luo