Patents by Inventor Elizabeth B. Ofstad

Elizabeth B. Ofstad 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).

  • Process and catalyst for the catalytic dehydrogenation of hydrocarbons
    Patent number: 4962265
    Abstract: A process is described for the catalytic dehydrogenation of paraffinic hydrocarbons preferably having from 3 to 6 carbon atoms in the presence of a catalyst containing at least one metal of the platinum group, a co-catalyst and a promoter, the noble metal of the platinum group being deposited into the alumina support in two steps, the first one being followed by a calcination and a reduction, the second one being followed by a calcination.
    Type: Grant
    Filed: February 13, 1989
    Date of Patent: October 9, 1990
    Assignee: Labofina, S.A.
    Inventors: Georges E. M. J. De Clippeleir, Elizabeth B. Ofstad, Steinar Kvisle