Patents by Inventor John H. Eng

John H. Eng 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).

  • Titanium-zirconium catalyst compositions and use thereof
    Patent number: 6841505
    Abstract: A catalyst composition prepared from (a) titanium tetrahydrocarbyloxide, (b) zirconium tetrahydrocarbyloxide, and (c) tetraalkyl ammonium hydroxide, wherein the molar ratio of Zr:Ti is from about 0.02:1 to about 5:1 and the molar ratio of TAAH:(Ti+Zr) is from about 0.05:1 to about 2:1.
    Type: Grant
    Filed: October 11, 2002
    Date of Patent: January 11, 2005
    Assignee: E..I. du Pont de Nemours and Company
    Inventor: John H. Eng
  • Titanium-zirconium catalyst compositions and use thereof
    Publication number: 20040018938
    Abstract: A catalyst composition prepared from (a) titanium tetrahydrocarbyloxide, (b) zirconium tetrahydrocarbyloxide, and (c) tetraalkyl ammonium hydroxide, wherein the molar ratio of Zr:Ti is from about 0.02:1 to about 5:1 and the molar ratio of TAAH:(Ti+Zr) is from about 0.05:1 to about 2:1.
    Type: Application
    Filed: October 11, 2002
    Publication date: January 29, 2004
    Inventor: John H. Eng