Patents by Inventor by Annette Schmitt, heir

by Annette Schmitt, heir 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).

  • Spectrophotometer
    Patent number: 4448530
    Abstract: A spectrophotometer producing a derivative spectrum of a looked-for component of a sample includes means for producing an output signal which is directly representative of the concentration of the looked-for element.
    Type: Grant
    Filed: February 23, 1981
    Date of Patent: May 15, 1984
    Inventors: Albert Schmitt, deceased, by Magdalena S. Schmitt, heir, by Thomas Schmitt, heir, by Martin Schmitt, heir, by Georg Schmitt, heir, by Annette Schmitt, heir, Ernst Spreitzhofer