Patents by Inventor Stephan Ruile

Stephan Ruile 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).

  • Phosphonated polypyridyl compounds and their complexes
    Patent number: 5789592
    Abstract: A compound in metal-free or metal complex form of formula (1) to (3) in which R is hydrogen or C.sub.1-30 alkyl; X is hydrogen, halogen (preferably Cl or Br) or C.sub.1-30 alkyl.
    Type: Grant
    Filed: October 30, 1996
    Date of Patent: August 4, 1998
    Assignee: Ecole Polytechnique Federale de Lausanne
    Inventors: Michael Gratzel, Oliver Kohle, Mohammad K. Nazeeruddin, Peter Pechy, Francois P. Rotzinger, Stephan Ruile, Shaik Mohammad Zakeeruddin