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:
Feb. 19, 2002
Filed:
Dec. 28, 2000
Douglas G. Anderson, Vancouver, WA (US);
Richard M. Aydelott, Ridgefield, WA (US);
SEH America, Inc., Vancouver, WA (US);
Abstract
An apparatus for determining a melt spill during Czochralski crystal growing processes, having a sensor or detector that allows the creation or cessation of a signal when the presence of melt spill is detected. This invention includes a sensor or detector that can operate in high temperature conditions without causing contamination to the crystal growth process. Any detected melt spill triggers an alarm so that potentially dangerous and costly situations may be avoided. The melt spill detector may be placed in any location advantageous to detect the melt spill, and may be incorporated into the components of the crystal growing apparatus.