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:
Oct. 13, 2005
Mark Philip D'evelyn, Niskayuna, NY (US);
Dong-sil Park, Niskayuna, NY (US);
Victor Lienkong Lou, Niskayuna, NY (US);
Thomas Francis Mcnulty, Ballston Lake, NY (US);
Huicong Hong, Niskayuna, NY (US);
Mark Philip D'Evelyn, Niskayuna, NY (US);
Dong-Sil Park, Niskayuna, NY (US);
Victor Lienkong Lou, Niskayuna, NY (US);
Thomas Francis McNulty, Ballston Lake, NY (US);
Huicong Hong, Niskayuna, NY (US);
Momentive Performance Materials Inc., Wilton, CT (US);
Abstract
An apparatus including a crucible, an energy source, and a controller is provided. The crucible may be sealed to a nitrogen-containing gas, and may be chemically inert to at least ammonia at a temperature in a range of about 400 degrees Celsius to about 2500 degrees Celsius. The energy source may supply thermal energy to the crucible. The controller may control the energy source to selectively direct sufficient thermal energy to a predefined first volume within the crucible to attain and maintain a temperature in the first volume to be in a range of from about 400 degrees Celsius to about 2500 degrees Celsius. The thermal energy may be sufficient to initiate, sustain, or both initiate and sustain growth of a crystal in the first volume. The first temperature in the first volume may be controllable separately from a second temperature in another volume within the crucible. The first temperature and the second temperature differ from each other. Associated methods are provided.