Patents by Inventor John G. Verkade

John G. Verkade 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).

  • New types of organometallic reagents and catalysts for asymmetric synthesis
    Patent number: 4885376
    Abstract: New chiral catalysts for asymmetric synthesis reactions. The catalysts induce chirality in desired fashion in product molecules. The catalysts are rigid quadruped or triped ligands which provide a rigid asymmetric enantio-face at the active catalyst cite, thus inducing preparation of enantiomer molecules.
    Type: Grant
    Filed: October 13, 1987
    Date of Patent: December 5, 1989
    Assignee: Iowa State University Research Foundation, Inc.
    Inventor: John G. Verkade
  • Medical drainage apparatus
    Patent number: 4626246
    Abstract: A medical drainage apparatus is provided for draining surgical wounds or internal organs or cavities. The apparatus comprises a pair of flexible pleated tubes which are adapted to be connected to a pair of drainage tubes which extend from the body, a relatively rigid Y connector which is connected to the flexible tubes, and a relatively rigid bridge which extends over the flexible tubes and which is adapted to be attached to the body and to hold the Y connector.
    Type: Grant
    Filed: October 17, 1983
    Date of Patent: December 2, 1986
    Assignee: Iowa State University Research Foundation
    Inventor: John G. Verkade
  • Converting homogeneous to heterogeneous catalysts
    Patent number: 4276195
    Abstract: Homogeneous transition metal complex catalysts for organic industrial processes are converted to catalysts which are heterogeneous with respect to the reactants, and which have substantially equal catalytic activity to the homogeneous catalysts. This is done by reacting a normally homogeneous transition metal complex catalyst with a metal bridging ligand which substantially duplicates the ligand moiety of the metal complex, to provide a polymerized, normally solid, heterogeneous phase, transition metal complex catalyst.
    Type: Grant
    Filed: December 20, 1979
    Date of Patent: June 30, 1981
    Assignee: Iowa State University Research Foundation, Inc.
    Inventor: John G. Verkade