Patents by Inventor Reinhard Ulrich

Reinhard Ulrich 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).

  • Waveguide
    Patent number: 3944326
    Abstract: A waveguide for submillimeter and infrared wavelength range electromagnetic radiation comprises a metal grating with a grating constant criterion: ##EQU1## BEING GREATER THAN (2/.lambda.).sup.2, WHERE .lambda. IS WAVELENGTH OF AN ELECTROMAGNETIC WAVE PROPAGATING FREELY IN THE SURROUNDING MEDIUM AND G.sub.X, G.sub.Y ARE GRATING CONSTANTS IN ORTHOGONAL DIRECTIONS. The constants g.sub.x, g.sub.y may be equal to each other or different.
    Type: Grant
    Filed: October 11, 1973
    Date of Patent: March 16, 1976
    Assignee: Max-Planck-Gesellschaft zur Forderung der Wissenschaften e.V.
    Inventors: Maurus Tacke, Reinhard Ulrich