Patents by Inventor Sigbert Muller

Sigbert 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).

  • Incandescent Lamp With an Absorption and Interference Filter
    Publication number: 20080036351
    Abstract: The invention relates to an incandescent lamp for producing light in a red region of the spectrum, comprising: a translucent lamp bulb (4); a spiral-wound filament enclosed by the lamp bulb, and; an interference filter (8), which is placed on the lamp bulb and which has a number of optically low refractive layers and optically highly refractive layers. According to the invention, the lamp bulb itself forms an absorption filter that absorbs unwanted light spectra. The color location shift into the red region of the spectrum ensues via the interference filter.
    Type: Application
    Filed: November 11, 2005
    Publication date: February 14, 2008
    Applicant: PATENT-TREUHAND-GESSELLSCHAFT FUR ELEKTRISCHE GLUHLAMPEN MBH
    Inventors: Sigbert Muller, Reinhard Schafer