Patents by Inventor Roelof Frederik De Graff

Roelof Frederik De Graff 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).

  • LITHOGRAPHIC APPARATUS, REMOVABLE MEMBER AND DEVICE MANUFACTURING METHOD
    Publication number: 20110199592
    Abstract: A sealing member is provided to prevent immersion liquid ingress to a gap between components. The sealing member has a plastic or polymer sealing portion that is adhered to the components forming the gap being sealed. The sealing member is constructed so as to reduce the force-coupling, in particular the time-related force-coupling, between the components being sealed.
    Type: Application
    Filed: November 15, 2010
    Publication date: August 18, 2011
    Applicant: ASML Netherlands B.V.
    Inventors: Roelof Frederik De Graff, Marcus Adrianus Van De Kerkhof, Martinus Hendrikus Antonius Leenders, Paulus Martinus Maria Liebregts, Gerardus Martinus Antonius De Rooij, Martijn Houben, Nina Vladimirovna Dziomkina, Johanna Antoinette Maria Sondag-Huethorst, Niek Elout De Kruijf, Vijay Kumar Badam