Patents by Inventor Howard E. Shook, Jr.

Howard E. Shook, 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).

  • Preparation of zerovalent nickel complexes
    Patent number: 4385007
    Abstract: Improved reaction rate for nickel powder in the preparation of zero-valent nickel organophosphite ligand complex catalysts using recycle catalyst and ligand.
    Type: Grant
    Filed: September 24, 1981
    Date of Patent: May 24, 1983
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Howard E. Shook, Jr.
  • Aryl borane complexes
    Patent number: 4347193
    Abstract: A novel compound having the general formula Ni[NH.sub.3 ].sub.4 [(NC)B (C.sub.6 H.sub.4 --R).sub.3 ].sub.2 wherein R is selected from the group consisting of hydrogen, halogen, alkyl groups having 1-6 carbon atoms and aryl groups having 6-10 carbon atoms prepared by reacting a nickel compound with the cyanide adduct of a triarylborane. The novel compounds can be converted to a cyanide free adduct of the triarylborane.
    Type: Grant
    Filed: April 20, 1979
    Date of Patent: August 31, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Howard E. Shook, Jr.