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. 29, 1977
Filed:
Sep. 30, 1974
Applicant:
Inventors:
Siegfried Leibenzeder, Erlangen, DT;
Klaus-Dieter Schwarzmichel, Erlangen-Grossdechsendorf, DT;
Assignee:
Siemens Aktiengesellschaft, Munich, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
2327 / ; 156601 ; 1566 / ; 240 / ; 240 / ; 350 / ; 350319 ; 356 44 ;
Abstract
An improved monitoring device for monitoring a crystal pulling process taking place in a high pressure drawing chamber in which the mounting for a high pressure window at the same time encloses the end of a quartz rod whose other end projects freely into the drawing chamber ending in the vicinity of the melt with the mount inserted into the device in a pressure tight manner using a nipple threaded into the drawing chamber, the monitoring device permitting good observation of the process without precipitation of the volatile element of the semiconductor compound on the high pressure window.