Patents by Inventor Johannes A. C. Cooijmans

Johannes A. C. Cooijmans 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).

  • Specimen holder for use in a charged particle beam device
    Patent number: 5280178
    Abstract: A specimen holder for use in a charged particle beam device, notably an electron microscope, comprises a support and a resilient retaining element. The retaining element comprises a resilient ring which can be detached from the support or resilient tags which are attached to the support. A specimen is pressed against the support by the resilient retaining element. Such retaining of the specimen offers the advantage that the specimen can be readily disposed on the comparatively thin support and can be simply detached therefrom with a minimum risk of damaging.
    Type: Grant
    Filed: March 16, 1992
    Date of Patent: January 18, 1994
    Assignee: U.S. Philips Corporation
    Inventors: Andreas Th. Engelen, Peter E. S. J. Asselbergs, Johannes A. C. Cooijmans