The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 06, 2008
Filed:
Mar. 08, 2007
Edward B. Stokes, Charlotte, NC (US);
Peter M. Sandvik, Guilderland, NY (US);
Vinayak Tilak, Watervliet, NY (US);
Jeffrey B. Fedison, Niskayuna, NY (US);
Elena Babes-dornea, Pierrefonds, CA;
Renyan Qin, Dollard-des-Ormeaux, CA;
James W. Rose, Guilderland, NY (US);
Stanton E. Weaver, Northvale, NJ (US);
Edward B. Stokes, Charlotte, NC (US);
Peter M. Sandvik, Guilderland, NY (US);
Vinayak Tilak, Watervliet, NY (US);
Jeffrey B. Fedison, Niskayuna, NY (US);
Elena Babes-Dornea, Pierrefonds, CA;
Renyan Qin, Dollard-des-Ormeaux, CA;
James W. Rose, Guilderland, NY (US);
Stanton E. Weaver, Northvale, NJ (US);
General Electric Company, Niskayuna, NY (US);
Abstract
A multi-gas sensor device for the detection of dissolved hydrocarbon gases in oil-filled electrical equipment. The device comprising a semiconductor substrate, one or more catalytic metal gate-electrodes deposited on the surface of the semiconductor substrate operable for sensing various gases, and an ohmic contact deposited on the surface of the semiconductor substrate. The semiconductor substrate comprises one of GaN, SiC, AlN, InN, AlGaN, InGaN and AlInGaN. A method for sensing gas in an oil-filled reservoir of electrical equipment, comprising providing a sensor device, immersing the sensor device in the oil-filled reservoir, allowing the gases emitted from the oil to interact with the one or more catalytic metal gate-electrodes, altering the gas as it contacts the catalytic metal gate-electrodes and altering the sensitivity of the sensor.