Patents by Inventor Fiona Obrock Geiser

Fiona Obrock Geiser 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 for purifying (-)-?-trans-tetrahydrocannabinol
    Patent number: 7449589
    Abstract: A process for separating (?)-?9-trans-tetrahydrocannabinol from a mixture of cannabinoids is disclosed. The process comprises at least one chromatographic step wherein a mobile phase passes trough a stationary phase. The stationary phase comprises a derivatised polysaccharide and the mobile phase comprises carbon dioxide.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: November 11, 2008
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Fiona Obrock Geiser, John James Keenan, Ronald Rossi, Albert Sanchez, John Michael Whelan