Patents by Inventor Harald D. Muller

Harald D. Muller 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).

  • Valance specific lanthanide doped optoelectronic metal fluoride semiconductor device
    Patent number: 5248890
    Abstract: An optoelectronic device, e.g. for integrated circuits, has an Si, II-VI or III/V semiconductor layer and an LaF.sub.3 or La.sub.1-x X.sub.x F.sub.3 insulating layer which is doped with Nd or Er to generate an optical signal whose wavelength is determined by the 4f ions used. The insulating layer can be grown epitaxially on the semiconductor layer and the lanthanide element ion substituting for a metal ion of the material forming the insulating layer has the same valence as the metal for which it is substituted.
    Type: Grant
    Filed: June 6, 1991
    Date of Patent: September 28, 1993
    Assignee: Forschungszentrum Julich GmbH
    Inventors: Hans Luth, Harald D. Muller, Jurgen Schneider, Ralf Strumpler