Patents by Inventor Laurens Kwakman

Laurens Kwakman 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).

  • Patent number: 11513079
    Abstract: Methods for locating and characterizing defects can include performing a first scan of a substrate to produce a first defect map including a first set of coordinates of one or more defects of the substrate and performing a second scan of one or more regions of the substrate associated with the defects based on the first defect map to produce one or more electron channeling contrast (ECC) images of the defects. Characterization of the defects can be based on the ECC images alone or in combination with other techniques. Such methods can include determining a second set of coordinates associated with the one or more defects based on the ECC images and directing an ion beam toward the substrate and milling the substrate based on the second set of coordinates.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: November 29, 2022
    Assignee: FEI Company
    Inventors: Roger Alvis, John Fretwell, Laurens Kwakman, Tomas Vystavel
  • Publication number: 20220113262
    Abstract: Methods for locating and characterizing defects can include performing a first scan of a substrate to produce a first defect map including a first set of coordinates of one or more defects of the substrate and performing a second scan of one or more regions of the substrate associated with the defects based on the first defect map to produce one or more electron channeling contrast (ECC) images of the defects. Characterization of the defects can be based on the ECC images alone or in combination with other techniques. Such methods can include determining a second set of coordinates associated with the one or more defects based on the ECC images and directing an ion beam toward the substrate and milling the substrate based on the second set of coordinates.
    Type: Application
    Filed: October 30, 2020
    Publication date: April 14, 2022
    Applicant: FEI Company
    Inventors: Roger Alvis, John Fretwell, Laurens Kwakman, Tomas Vystavel