Patents by Inventor Alex Jer-Yann Hsieh

Alex Jer-Yann Hsieh 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).

  • Multi-layer matrix composite having improved energy absorption, dissipation and shock wave mitigation capabilities
    Patent number: 9500445
    Abstract: The disclosure relates to matrix composites comprising high strain-rate sensitive elastomers in a multi-layer construct which provide ballistic-resistant material systems with enhanced protection against blast damage as well as ballistic impact. According to one embodiment, a matrix composite for impact resistance and blast mitigation formed in a multi-layer configuration may include: (a) one or more outer layers comprising poly(urethane urea) having a strain-rate sensitivity characteristic in the range of 1,000/sec to 1,000,000/sec; and (b) one or more inner layers comprising poly(urethane urea) having a strain-rate sensitivity characteristic in the range of 10,000/sec to 1,000,000/sec.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: November 22, 2016
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Alex Jer-Yann Hsieh, Tanya L. Chantawansri, Jan W. Andzelm
  • MULTI-LAYER MATRIX COMPOSITE HAVING IMPROVED ENERGY ABSORPTION, DISSIPATION AND SHOCK WAVE MITIGATION CAPABILITIES
    Publication number: 20150072118
    Abstract: The disclosure relates to matrix composites comprising high strain-rate sensitive elastomers in a multi-layer construct which provide ballistic-resistant material systems with enhanced protection against blast damage as well as ballistic impact. According to one embodiment, a matrix composite for impact resistance and blast mitigation formed in a multi-layer configuration may include: (a) one or more outer layers comprising poly(urethane urea) having a strain-rate sensitivity characteristic in the range of 1,000/sec to 1,000,000/sec; and (b) one or more inner layers comprising poly(urethane urea) having a strain-rate sensitivity characteristic in the range of 10,000/sec to 1,000,000/sec.
    Type: Application
    Filed: September 10, 2013
    Publication date: March 12, 2015
    Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I
    Inventors: Alex Jer-Yann Hsieh, Tanya L. Chantawansri, Jan W. Andzelm