Patents by Inventor Charlotte Raetzel

Charlotte Raetzel 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).

  • Integrated circuits and method of producing the same
    Patent number: 4017769
    Abstract: An integrated circuit formed on the surface of an insulating substrate is provided with an overlying conductive layer interconnecting the integrated circuit with an external electrode, and an intermediate layer of insulating material is interposed between the conductive layer and the substrate.
    Type: Grant
    Filed: February 16, 1973
    Date of Patent: April 12, 1977
    Assignee: Siemens Aktiengesellschaft
    Inventors: Charlotte Raetzel, Jenoe Tihanyi