Patents by Inventor Fred C. Stone

Fred C. Stone 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 cyclobutarenes via the steam pyrolysis of aromatic derivatives
    Patent number: 5093541
    Abstract: Cyclobutarenes are prepared by pyrolyzing a suitable benzene, naphthalene, or pyridine derivative in the presence of an amount of steam effective to substantially reduce the partial pressure of the pyrolyzing compound.
    Type: Grant
    Filed: May 25, 1989
    Date of Patent: March 3, 1992
    Assignee: The Dow Chemical Company
    Inventors: George J. Quarderer, Mark J. Beitz, Fred C. Stone, Patrick M. O'Donnell
  • Preparation of cyclobutarenes via the steam pyrolysis of aromatic derivatives
    Patent number: 4851603
    Abstract: Cyclobutarenes are prepared by pyrolyzing a suitable benzene, naphthalene, or pyridine derivative in the presence of an amount steam effective to substantially reduce the partial pressure of the pyrolyzing compound.
    Type: Grant
    Filed: October 23, 1987
    Date of Patent: July 25, 1989
    Assignee: The Dow Chemical Company
    Inventors: George J. Quarderer, Fred C. Stone, Mark J. Beitz, Patrick M. O'Donnell