The following operators can be used to better focus your queries.
( ) , AND, OR, NOT, W/#
? single char wildcard, not at start
* multi char wildcard, not at start
(Cat? OR feline) AND NOT dog?
Cat? W/5 behavior
(Cat? OR feline) AND traits
Cat AND charact*
This guide provides a more detailed description of the syntax that is supported along with examples.
This search box also supports the look-up of an IP.com Digital Signature (also referred to as Fingerprint); enter the 72-, 48-, or 32-character code to retrieve details of the associated file or submission.
Concept Search - What can I type?
For a concept search, you can enter phrases, sentences, or full paragraphs in English. For example, copy and paste the abstract of a patent application or paragraphs from an article.
Concept search eliminates the need for complex Boolean syntax to inform retrieval. Our Semantic Gist engine uses advanced cognitive semantic analysis to extract the meaning of data. This reduces the chances of missing valuable information, that may result from traditional keyword searching.
An electrically insulating crucible pedestal is provided to prevent arcing. The arcing causes uncontrolled variations in melt temperature during large diameter Czochralski silicon crystal growth.
English (United States)
This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
100% of the total text.
Page 1 of 2
Crucible Pedestal to Prevent Heater Arcing
An electrically insulating crucible pedestal is provided to prevent arcing. The
arcing causes uncontrolled variations in melt temperature during large diameter
Czochralski silicon crystal growth.
Silicon melt 1 is contained in silica crucible 2 which is retained in place by
graphite sleeve 3 in graphite heater 4. Crucible 2 is supported by pedestal 5,
which is rotated by steel shaft 6. Arcing between sleeve 3 and heater 4, which
results in uncontrolled variations in heater power and silicon melt temperature, is
avoided by forming pedestal 5 of boron-nitride.
Page 2 of 2
[This page contains 2 pictures or other non-text objects]