Patents by Inventor Henry M. Stahr

Henry M. Stahr 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).

  • Method of detecting mold toxin infected grains
    Patent number: 4314027
    Abstract: A method of detecting mold toxin infected grains. The method involves obtaining a gaseous sample from the grain which is representative of the volatiles which are produced within the grain, and thereafter determining by gas chromatographic analysis of said gaseous sample, if the grain contains volatiles known to be produced by mold toxin infected grains.
    Type: Grant
    Filed: July 21, 1980
    Date of Patent: February 2, 1982
    Assignee: Iowa State University Research Foundation, Inc.
    Inventor: Henry M. Stahr
  • Method for polarographic analysis using an electrode of tantalum/carbon material
    Patent number: 3964981
    Abstract: An electrode for an electrochemical cell, such as may be used in polarographic measurements, is formed by vapor deposition of carbon on a tantalum substrate. It can be formed to a desired shape while retaining all the properties of the metal, and it has a large surface and is thus very sensitive. The electrode is inert, will not oxidize over a wide useful range of applied voltages, and exhibits no hysteresis effect when the polarity is reversed.
    Type: Grant
    Filed: September 20, 1973
    Date of Patent: June 22, 1976
    Assignee: Iowa State University Research Foundation, Inc.
    Inventor: Henry M. Stahr