Patents by Inventor Sven Winterlich

Sven Winterlich 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).

  • RETAINING RING FOR A CHEMICAL MECHANICAL POLISHING TOOL
    Publication number: 20080160885
    Abstract: A retaining ring for a chemical mechanical polishing tool comprises a pad side surface. The pad side surface has an edge portion adjacent its outer circumference. A surface normal of the edge portion and a surface normal of the pad side surface include an acute angle. Additionally, or alternatively, the retaining ring may comprise at least one groove extending from an inner circumference of the pad side surface to the outer circumference of the pad side surface. The groove comprises at least one edge portion adjacent the pad side surface. A surface normal of the at least one edge portion and a surface normal of the pad side surface include an acute angle.
    Type: Application
    Filed: July 13, 2007
    Publication date: July 3, 2008
    Inventors: Sven Winterlich, Alexander Ulrich