Patents by Inventor John P. Wolfe

John P. Wolfe 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).

  • Patent number: 5847166
    Abstract: A method for preparing an aryl ether compound is provided in which an alcohol is reacted with an aromatic compound in the presence of a base, and a transition metal catalyst selected from the group consisting of platinum and nickel to form an aryl ether. The aromatic compound comprises an activated substituent, X, said activated substituent being a moiety such that its conjugate acid HX has a pKa of less than 5.0. The catalyst is preferably a soluble palladium complex in the presence of supporting ligands.
    Type: Grant
    Filed: October 10, 1996
    Date of Patent: December 8, 1998
    Assignee: Massachusetts Institute of Technology
    Inventors: Stephen L. Buchwald, John P. Wolfe, Michael Palucki
  • Patent number: RE29454
    Abstract: The method of proportioning two liquids comprising periodically controlling the operation of a valving .[.means.]. .Iadd.arrangement .Iaddend.to control the amount of each liquid supplied to a mixing region during each period of valve operation to produce a supply of eluent having a precisely controlled time varying concentration of each liquid.
    Type: Grant
    Filed: February 20, 1976
    Date of Patent: October 25, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Howard L. Ashmead, Sydnor H. Byrne, Jr., John P. Wolf, III