Patents by Inventor Zongyuan Wei

Zongyuan Wei 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).

  • Lead-free X-ray shielding rubber composite
    Patent number: 8728349
    Abstract: An overall lead-free X-ray shielding rubber compound material. The overall lead-free X-ray shielding rubber compound material uses rare earth mixture to replace lead, simultaneously adds metal tin and compounds thereof, metal tungsten and compounds thereof and bismuth and compounds thereof as shielding main materials and is further compounded with rubber to prepare the compound material which can realize the overall shielding and the complete lead-free property within the energy range of 40-170 kVp. When rare earth and bismuth materials are used, the way of combined use of two metal element inorganic compounds and unsaturated organic complexes is adopted, and the in-situ reaction and the compounding with a polymer matrix are carried out, thereby leading the shielding element disperse phase to form nano-micro-level dispersed particles.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: May 20, 2014
    Assignee: Beijing University of Chemical Technology
    Inventors: Li Liu, Liqun Zhang, Shui Hu, Shipeng Wen, Zongyuan Wei
  • LEAD-FREE X-RAY SHIELDING RUBBER COMPOSITE
    Publication number: 20120012793
    Abstract: An overall lead-free X-ray shielding rubber compound material. The overall lead-free X-ray shielding rubber compound material uses rare earth mixture to replace lead, simultaneously adds metal tin and compounds thereof, metal tungsten and compounds thereof and bismuth and compounds thereof as shielding main materials and is further compounded with rubber to prepare the compound material which can realize the overall shielding and the complete lead-free property within the energy range of 40-170 kVp. When rare earth and bismuth materials are used, the way of combined use of two metal element inorganic compounds and unsaturated organic complexes is adopted, and the in-situ reaction and the compounding with a polymer matrix are carried out, thereby leading the shielding element disperse phase to form nano-micro-level dispersed particles.
    Type: Application
    Filed: June 23, 2009
    Publication date: January 19, 2012
    Applicant: Beijing University of Chemical Technology
    Inventors: Li Liu, Liqun Zhang, Shui Hu, Shipeng Wen, Zongyuan Wei