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.
A vacuum pencil tip has been developed which can conveniently pick up the increased weight of 200 mm wafers used in semiconductor devices.
English (United States)
This text was extracted from a PDF file.
100% of the total text.
Page 1 of 1
200mm Vacuum Tip
A vacuum pencil tip has been developed which can conveniently pick up the
increased weight of 200 mm wafers used in semiconductor devices.
Fig. 1 depicts the plastic tip which has a step 2. The tip comes in two
configurations; one in plastic and one in stainless steel. The stainless steel tip
does not have the step.
The purpose of the step in the plastic tip is to compensate for any bulging
which may occur when a shaft is inserted into the vacuum port 3. Such a bulge
would affect the smooth contour of the tip and affect the vacuum. The horizontal
opening 4 in the tip 1 has a greater area than that in conventional tips. This
makes it possible to pick up the added weight of the large 200 mm wafer.
The availability of a stainless steel tip 1 means it is possible to lift a hot wafer
without waiting for it to cool. Not having to wait for a cool-down has a positive
effect on productivity.