Patents by Inventor Di Zhu

Di Zhu 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).

  • Patent number: 8451877
    Abstract: Tailored doping of barrier layers enables balancing of the radiative recombination among the multiple-quantum-wells in III-Nitride light-emitting diodes. This tailored doping enables more symmetric carrier transport and uniform carrier distribution which help to reduce electron leakage and thus reduce the efficiency droop in high-power III-Nitride LEDs. Mitigation of the efficiency droop in III-Nitride LEDs may enable the pervasive market penetration of solid-state-lighting technologies in high-power lighting and illumination.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: May 28, 2013
    Assignee: Sandia Corporation
    Inventors: Mary Crawford, Daniel Koleske, Jaehee Cho, Di Zhu, Ahmed Noemaun, Martin F. Schubert, E. Fred Schubert
  • Publication number: 20110224429
    Abstract: Disclosed is a process of enantioselectively forming an aminoxy compound of Formula (3) In formula (3) R1 is one of an aliphatic group and an alicyclic group. R2 is one of hydrogen, an aliphatic group, an alicyclic group, an aromatic group, an arylaliphatic group and an arylalicyclic group. R3 is one of hydrogen, halogen, hydroxyl, and an aliphatic group with a main chain having 1 to about 10 carbon atoms. The respective aliphatic, alicyclic, aromatic, arylaliphatic or arylalicyclic groups of R1, R2, and R3 comprise 0 to about 3 heteroatoms independently selected from the group consisting of N, O, S, Se and Si. The process includes contacting a carbonyl compound of Formula (1) and a nitroso compound of Formula (2) in the presence of a chiral catalyst.
    Type: Application
    Filed: May 18, 2010
    Publication date: September 15, 2011
    Applicant: Nanyang Technological University
    Inventors: Guofu Zhong, Min Lu, Di Zhu, Pei Juan Chua, Bin Tan
  • Publication number: 20110182200
    Abstract: A method, device and user equipment (UE) for transmitting multi-cell scheduling information is provided. When at least two cells are serving the UE, the method for transmitting multi-cell scheduling information includes the following steps: determining a main cell of the UE from the at least two cells; transmitting, in the main cell, the scheduling information of the main cell and an auxiliary cell which are serving the UE.
    Type: Application
    Filed: March 21, 2011
    Publication date: July 28, 2011
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Lei Wan, Sha Ma, Mingyu Zhou, Jingyuan Sun, Chengyu Wang, Di Zhu, Yuan Xia, Xiaotao Ren, Shujun Dang