Patents by Inventor Michael Alexander Lienhard

Michael Alexander Lienhard 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).

  • Synthesis of substituted ruthenocene complexes
    Patent number: 6521772
    Abstract: This invention is directed to a method for producing an alkyl-substituted metallocene complex comprising the steps of mixing a metallocene with a solvent to form a metallocene-solvent mixture; mixing the metallocene-solvent mixture with an effective amount of a metallation reagent to produce a metallated-metallocene; and mixing said metallated-metallocene with an electrophilic alkyl-reagent to form an alkyl-substituted metallocene complex.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: February 18, 2003
    Assignees: Praxair Technology, Inc., Research Foundation of Suny
    Inventors: Michael Alexander Lienhard, Cynthia A. Hoover, Jim D Atwood, David C. Hoth
  • Methods of synthesizing ruthenium and osmium compounds
    Patent number: 6420583
    Abstract: This invention is directed to a method for synthesizing a carbonyl based compound under neat conditions comprising refluxing a metal carbonyl compound with an excess of neutral ligand to produce a first mixture; evaporating any excess neutral ligand from the first mixture to produce a second mixture; and distilling the second mixture to produce the carbonyl based compound.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: July 16, 2002
    Assignee: Praxair Technology, INC
    Inventors: Michael Alexander Lienhard, Cynthia A. Hoover