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:
Nov. 22, 2011
Filed:
Aug. 02, 2007
Applicant:
Ralf Jonczyk, Wilmington, DE (US);
Inventor:
Ralf Jonczyk, Wilmington, DE (US);
Assignee:
Motech Americas, LLC, Newark, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D 7/22 (2006.01); B05D 3/02 (2006.01); F27B 14/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of making a release coating includes the following steps: forming a mixture that includes (a) solid components comprising (i) 20-99% silicon by weight and (ii) 1-80% silicon nitride by weight and (b) a solvent; applying the mixture to an inner portion of a crucible or graphite board adapted to form an ingot or wafer comprising silicon; and annealing the mixture in a nitrogen atmosphere at a temperature ranging from 1000 to 2000° C. The invention may also relate to release coatings and methods of making a silicon ingot or wafer including the use of a release coating.