Patents by Inventor Oingxia Wang

Oingxia 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).

  • Rare earth--ZSM-5/ZSM-11 cocrystalline zeolite
    Patent number: 5869021
    Abstract: A rare earth-containing zeolite with a cocrystalline structure of ZSM-5 and ZSM-11, wherein the weight ratio of the moiety having the crystalline structure of ZSM-5 to the moiety having the crystalline structure of ZSM-11 is 0.1 to 10, which has, in the sodium form, the X-ray diffraction pattern set forth in Table 1, and in its originally synthesized anhydrous state, a chemical formula in terms of mole ratios of oxides as follows: 0.1-1.0 Na.sub.2 O.0.01-1.0 RE.sub.2 O.sub.3.Al.sub.2 O.sub.3.20-300 SiO.sub.2. Said zeolite has good acid hydrothermal stability and resistance against impurity contamination, and is useful as catalyst in various hydrocarbon conversions.
    Type: Grant
    Filed: December 19, 1995
    Date of Patent: February 9, 1999
    Assignees: China Petro-Chemical Corporation, Dalian Institute of Chemical Physics, Chineses Academy of Sciences, Fushun Petrochemical Company of Sinopec
    Inventors: Oingxia Wang, Shurong Zhang, Guangyu Cai, Feng Li, Longya Xu, Zuxian Huang, Yuying Li