Patents by Inventor Erna Schwarzenegger

Erna Schwarzenegger 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).

  • Cover layer for optical ion sensors
    Patent number: 5091800
    Abstract: In order to eliminate interferences of an optical or chemical nature, preferably in optical sensors, a cover layer is provided which comprises a hydrophilic, ion-permeable polymer membrane containing precious metal pigments deposited by a reduction or reduction/cementation technique for the purpose of suppressing straylight.
    Type: Grant
    Filed: July 8, 1988
    Date of Patent: February 25, 1992
    Assignee: AVL AG
    Inventors: Helmut Offenbacher, Erna Schwarzenegger