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:
Oct. 24, 2006
Filed:
Jul. 30, 2003
Andreas Mühe, Hanau, DE;
Andreas Mühe, Hanau, DE;
Crystal Growing Systems GmbH, Hanau, DE;
Abstract
A process for calibrating the temperature control unit of a vertical gradient freeze crystal growth oven, instead of the fused material a test body () is used in the oven () that does not melt at the oven temperature, that has a heat conductivity comparable to the fused material and a central bore (). After turning on the resistance heaters () of the oven () the temperature at the level of the individual control temperature indicators () of the oven () is measured via a reference temperature indicator () that can be fully inserted into the bore () and subsequently the output of the respective resistance heaters () is set to a desired temperature value. After removing the test body () and the reference temperature indicator (), the oven () is operated according to the control temperature indicators () taking into consideration previously determined differences between the reference temperatures and the temperature values of the control temperature indicators ().