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:
Mar. 20, 2001
Filed:
May. 17, 1999
Applicant:
Inventors:
Burkhard Altekrüger, Alzenau, DE;
Joachim Aufreiter, Alzenau, DE;
Dieter Brüss, Bruchköbel, DE;
Klaus Kalkowski, Gründau, DE;
Assignee:
Leybold Systems GmbH, Hanau, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C30B 1/520 ;
U.S. Cl.
CPC ...
C30B 1/520 ;
Abstract
A device for monitoring a melt for the production of crystals. A camera is provided which images at least portions of the surface of the contents of a crucible. An evaluating device is used to evaluate the camera's images with respect to solid and liquid portions of the surface of the crucible contents.