Patents by Inventor Linda L. Pfingsten

Linda L. Pfingsten 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 indenes
    Patent number: 4677238
    Abstract: Disclosed is the vapor phase cyclodehydration of an aldehyde or ketone over a solid catalyst which comprises phosphoric acid on a solid inorganic oxide support to make indene or a substituted indene according to the equation: ##STR1##
    Type: Grant
    Filed: September 12, 1986
    Date of Patent: June 30, 1987
    Assignee: The Standard Oil Company
    Inventors: S. Erik Pedersen, Linda L. Pfingsten
  • Indenes by catalytic dehydrocyclization
    Patent number: 4613711
    Abstract: Disclosed is the dehydrocyclization of certain alkylaromatics to indene or a substituted indene by contacting certain alkylaromatics in admixture with H.sub.2 O with a sulfided metal oxide catalyst.
    Type: Grant
    Filed: November 25, 1985
    Date of Patent: September 23, 1986
    Assignee: The Standard Oil Company
    Inventors: S. Erik Pedersen, Wilfrid G. Shaw, Linda L. Pfingsten