Patents by Inventor Mikal E. Saltveit, Jr.

Mikal E. Saltveit, Jr. 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).

  • Gas sensing apparatus and method
    Patent number: 4414839
    Abstract: A sensing apparatus and method for qualitatively and quantitatively analyzing small amounts of selected oxidizable gases in a carrier gas including the associated electronic circuitry is described. The apparatus preferably includes two semi-conductor type sensing elements in electrical parallel so that the difference in resistance of the two sensors can be detected, which can be of the N or P type and which decrease or increase in electrical resistance as a function of the concentration of an oxidizable gas. Also, a method for determining fruit maturity and ripeness by the detection of ethylene in the internal atmosphere of a fruit is described which preferably uses the apparatus with the semi-conductor type sensing elements, but can use other variable resistance type gas sensing means.
    Type: Grant
    Filed: October 17, 1980
    Date of Patent: November 15, 1983
    Assignee: Board of Trustees, a Constitutional corporation operating Michigan State University
    Inventors: David R. Dilley, Julian J. L. Lee, Mikal E. Saltveit, Jr.
  • Gas sensing apparatus and method
    Patent number: 4410632
    Abstract: A sensing apparatus and method for qualitatively and quantitatively analyzing small amounts of selected oxidizable gases in a carrier gas including the associated electronic circuitry is described. The apparatus preferably includes two semi-conductor type sensing elements in electrical parallel so that the difference in resistance of the two sensors can be detected, which can be of the N or P type and which decrease or increase in electrical resistance as a function of the concentration of an oxidizable gas. Also, a method for determining fruit maturity and ripeness by the detection of ethylene in the internal atmosphere of a fruit is described which preferably uses the apparatus with the semi-conductor type sensing elements, but can use other variable resistance type gas sensing means.
    Type: Grant
    Filed: December 18, 1980
    Date of Patent: October 18, 1983
    Assignee: Board of Trustees operating Michigan State University
    Inventors: David R. Dilley, Julian J. L. Lee, Mikal E. Saltveit, Jr.