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:
Dec. 01, 2015
Filed:
Oct. 12, 2005
Applicants:
Robert Tyler Leonard, Raleigh, NC (US);
Adrian Powell, Cary, NC (US);
Valeri F. Tsvetkov, Durham, NC (US);
Inventors:
Robert Tyler Leonard, Raleigh, NC (US);
Adrian Powell, Cary, NC (US);
Valeri F. Tsvetkov, Durham, NC (US);
Assignee:
Cree, Inc., Durham, NC (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C30B 23/06 (2006.01); C30B 29/36 (2006.01); C30B 23/00 (2006.01); C30B 33/00 (2006.01); H01L 21/324 (2006.01);
U.S. Cl.
CPC ...
C30B 29/36 (2013.01); C30B 23/00 (2013.01); C30B 33/00 (2013.01); H01L 21/324 (2013.01); Y10T 117/10 (2013.01); Y10T 117/1004 (2013.01); Y10T 117/1016 (2013.01); Y10T 428/21 (2013.01); Y10T 428/31 (2013.01);
Abstract
A method is disclosed for producing a high quality bulk single crystal of silicon carbide in a seeded growth system by reducing the separation between a silicon carbide seed crystal and a seed holder until the conductive heat transfer between the seed crystal and the seed holder dominates the radiative heat transfer between the seed crystal and the seed holder over substantially the entire seed crystal surface that is adjacent the seed holder.