Patents by Inventor Catherine Shuihua Hsia Chen

Catherine Shuihua Hsia Chen 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).

  • Large crystal ZSM-5, its synthesis and use
    Patent number: 6013239
    Abstract: In a synthetic porous crystalline material having the structure of ZSM-5 and a composition involving the molar relationship: X.sub.2 O.sub.3 :(n)YO.sub.2, wherein X is a trivalent element; Y is a tetravalent element; and n is greater than about 12, the crystals have a major dimension of at least about 0.5 micron and surface framework YO.sub.2 /X.sub.2 O.sub.3 ratio which is no more than 20% less than the bulk framework YO.sub.2 /X.sub.2 O.sub.3 ratio of the crystal. The material is synthesized using an amino-acid as a directing agent.
    Type: Grant
    Filed: November 4, 1997
    Date of Patent: January 11, 2000
    Assignee: Mobil Oil Corporation
    Inventors: Catherine Shuihua Hsia Chen, Frank Thomas Diguiseppi, Thomas Reginald Forbus, Jr., Mae Koenig Rubin, Sanjay Bhardwaj Sharma, David Said Shihabi, Hye Kyung Cho Timken, Steven Edward Wentzek