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:
Jun. 24, 2008
Filed:
Jun. 27, 2005
Applicants:
Larry Burton Rowland, Scotia, NY (US);
Ahmed Elasser, Latham, NY (US);
Inventors:
Larry Burton Rowland, Scotia, NY (US);
Ahmed Elasser, Latham, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 29/15 (2006.01); H01L 31/0312 (2006.01);
U.S. Cl.
CPC ...
Abstract
A composite structure having a silicon carbide epitaxial layer is provided. The epitaxial layer includes at least four regions arranged vertically and defining respective interfaces, where each of the regions is characterized by a respective impurity concentration, where the impurity concentrations vary across each of the interfaces, and where each of the impurity concentrations exceeds 1×10cmfor at least one single impurity in all of the regions.