Patents by Inventor Lianhe Yu

Lianhe Yu 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).

  • Methods of making porphyrins and related compounds with Lewis acids
    Publication number: 20030096978
    Abstract: The present invention provides methods of making porphyrins and related compounds such as chlorins by condensing suitable starting materials (e.g., a dipyrromethane-dicarbinol plus dipyrromethane) in a polar solvent in the presence of a Lewis acid. The reactions are preferably carried out in a manner that minimizes rearrangement of the reaction product.
    Type: Application
    Filed: September 25, 2001
    Publication date: May 22, 2003
    Inventors: Jonathan S. Lindsey, G. Richard Geier, Lianhe Yu