Patents by Inventor Tommie L. Royster, Jr.

Tommie L. Royster, 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).

  • Hydrogen sulfide gas sensor and precursor compounds for manufacture of same
    Patent number: 5433971
    Abstract: Tungsten carboxylate compounds useful for coating interdigitated electrodes used in hydrogen sulfide gas sensors are disclosed. A method of coating electrodes with the compounds using a precise solution casting technique such as spin-coating or casting, dip-casting or spray-casting techniques is also described. Electrodes which are solution coated with the compounds may be used to fabricate superior quality chemiresistor sensors for use in hydrogen sulfide gas sensing devices by heating the carboxylates above 350.degree. C. to decompose certain carboxylates to WO.sub.3 and others to sodium tungstate.
    Type: Grant
    Filed: February 23, 1994
    Date of Patent: July 18, 1995
    Assignee: Eastman Kodak Company
    Inventors: Tommie L. Royster, Jr., Gustavo R. Paz-Pujalt, Dilip K. Chatterjee, Carl A. Marrese
  • Hydrogen sulfide gas sensor and precursor compounds for manufacture of same
    Patent number: 5321146
    Abstract: Tungsten carboxylate compounds useful for coating interdigitated electrodes used in hydrogen sulfide gas sensors are disclosed. A method of coating electrodes with the compounds using a precise solution casting technique such as spin-coating or casting, dip-casting or spray-casting techniques is also described. Electrodes which are solution coated with the compounds may be used to fabricate superior quality chemiresistor sensors for use in hydrogen sulfide gas sensing devices by heating the carboxylates above 350.degree. C. to decompose certain carboxylates to WO.sub.3 and others to sodium tungstate.
    Type: Grant
    Filed: August 25, 1992
    Date of Patent: June 14, 1994
    Assignee: Eastman Kodak Company
    Inventors: Tommie L. Royster, Jr., Gustavo R. Paz-Pujalt, Dilip K. Chatterjee, Carl A. Marrese