Patents by Inventor Ullrich Stahl

Ullrich Stahl 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).

  • Method for producing surface acoustic wave sensors and such a surface acoustic wave sensor
    Patent number: 6640613
    Abstract: In a method for producing surface wave sensors on the basis of a surface wave building component a polymer parylene film with a thickness of 20 to 200 nm is applied to a hydrophilic sensor surface of the surface wave building component by deposition from the gas phase, whereby the hydrophilic sensor surface becomes hydrophobic, the surface is then subjected to plasma activation to render it hydrophilic and a hydrophilic sorption polymer layer is then applied to the parylene film so as to provide a surface wave sensor with a homogenous sorption polymer layer.
    Type: Grant
    Filed: April 1, 2002
    Date of Patent: November 4, 2003
    Assignee: Forschungszentrum Karlsruhe GmbH
    Inventors: Michael Rapp, Ullrich Stahl
  • Method for producing surface acoustic wave sensors and such a surface acoustic wave sensor
    Publication number: 20020113521
    Abstract: In a method for producing surface wave sensors on the basis of a surface wave building component a polymer parylene film with a thickness of 20 to 200 nm is applied to a hydrophilic sensor surface of the surface wave building component by deposition from the gas phase, whereby the hydrophilic sensor surface becomes hydrophobic, the surface is then subjected to plasma activation to render it hydrophilic and a hydrophilic sorption polymer layer is then applied to the parylene film so as to provide a surface wave sensor with a homogenous sorption polymer layer.
    Type: Application
    Filed: April 1, 2002
    Publication date: August 22, 2002
    Inventors: Michael Rapp, Ullrich Stahl