Patents by Inventor Walter H. Knoth, Jr.

Walter H. Knoth, Jr. 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).

  • Ligated transition metal derivatives of heteropolyanions
    Patent number: 4196136
    Abstract: Salts and acids containing a triheteropolyanion in which one addenda atom of a heterododecatungstate or heterododecamolybdate is replaced by one tin atom or by two germanium atoms, in which the tin atom or the germanium atoms are bonded to a ligated transition metal, have outstanding utility as catalysts for the oligomerization of terephthalic acid with ethylene glycol, and for the isomerization of 1-butene, and for the dehydration of 2-butanol and subsequent isomerization of the 1-butene formed.
    Type: Grant
    Filed: November 6, 1978
    Date of Patent: April 1, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Walter H. Knoth, Jr.