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:
Jan. 08, 2008
Filed:
Oct. 12, 2005
Jason Ronald Jenny, Raleigh, NC (US);
David Phillip Malta, Raleigh, NC (US);
Hudson Mcdonald Hobgood, Pittsboro, NC (US);
Stephan Georg Mueller, Durham, NC (US);
Mark Brady, Carrboro, NC (US);
Robert Tyler Leonard, Raleigh, NC (US);
Adrian Powell, Apex, NC (US);
Valeri F. Tsvetkov, Durham, NC (US);
George J. Fechko, Jr., Apex, NC (US);
Calvin H. Carter, Jr., Durham, NC (US);
Jason Ronald Jenny, Raleigh, NC (US);
David Phillip Malta, Raleigh, NC (US);
Hudson McDonald Hobgood, Pittsboro, NC (US);
Stephan Georg Mueller, Durham, NC (US);
Mark Brady, Carrboro, NC (US);
Robert Tyler Leonard, Raleigh, NC (US);
Adrian Powell, Apex, NC (US);
Valeri F. Tsvetkov, Durham, NC (US);
George J. Fechko, Jr., Apex, NC (US);
Calvin H. Carter, Jr., Durham, NC (US);
Cree, Inc., Durham, NC (US);
Abstract
A method is disclosed for producing a high quality bulk single crystal of silicon carbide in a seeded growth system and in the absence of a solid silicon carbide source, 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.