Patents by Inventor Ralph W. Fuhrhop

Ralph W. Fuhrhop 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).

  • Stable oil-in-water emulsions incorporating a taxine (taxol) and method of making same
    Patent number: 5616330
    Abstract: This invention is directed to a composition of a taxine in a stable oil-in-water emulsion for intravenous administration. The invention also relates to a method for incorporating a taxine into an oil and making a stable oil-in-water emulsion.The composition includes a taxine, an oil, water and a surfactant. In a preferred embodiment, the taxine is taxol, the oil is safflower oil and the surfactant is lecithin, The taxine is incorporated into the oil by dissolving the taxine in a solution of an oil and a taxine co-solvent, such as isopropanol, for example. The co-solvent then is removed to form a solution of the taxine in oil. This solution may be dispersed in water with a surfactant to form a stable oil-in-water emulsion for intravenous administration.
    Type: Grant
    Filed: July 19, 1994
    Date of Patent: April 1, 1997
    Assignee: HemaGen/PFC
    Inventors: Robert J. Kaufman, Thomas J. Richard, Ralph W. Fuhrhop
  • Process for preparing 2-hydroxybenzothiazole compounds
    Patent number: 4150027
    Abstract: 2-Hydroxybenzothiazole compounds are prepared by reacting o-aminobenzenethiol with carbonyl sulfide in the presence of a tertiary amine and a solvent.
    Type: Grant
    Filed: March 28, 1977
    Date of Patent: April 17, 1979
    Assignee: Monsanto Company
    Inventors: John J. D'Amico, Ralph W. Fuhrhop