Patents by Inventor Linhua Yu

Linhua Yu 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).

  • Nonlinear optical (NLO) crystal strontium Beryllatoborate SR.sub.2 Be.sub.2 .sub.2 O.sub.7
    Patent number: 5523026
    Abstract: The present invention relates to a new type NLO crystal Strontium Beryllatoborate (Chemical formula Sr.sub.2 Be.sub.2 B.sub.2 O.sub.7, abbr. SBBO). The SBBO compound is synthesized by chemical reaction of solid state in high temperature sintering, Its chemical reaction equation is:2SrCO.sub.3 +2BeO+2H.sub.3 BO.sub.3 .fwdarw.Sr.sub.2 Be.sub.2 B.sub.2 O.sub.7 +2CO.sub.2 +3H.sub.2 OA flux method is applied to the growth of single crystal of Strontium Beryllatoborate, in which SrB.sub.2 O.sub.4, NaF and other fluorides were used as flux solvents. The result of measurement indicated that this compound has following structural and physical characteristics: space group: P6.sub.3 (C.sub.6.sup.6) point group: C .sub.6, unit cell: a=4.663(3) .ANG., c=15.311(7) .ANG.,z=2, V=283.3(.ANG.).sup.3.
    Type: Grant
    Filed: April 17, 1995
    Date of Patent: June 4, 1996
    Inventors: Chuangtian Chen, Baichang Wu, Yebin Wang, Wenrong Zeng, Linhua Yu, Qun Zou