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Patent No. 5377411

Hair Cutting Appliance

A haircutting appliance comprises an enclosed housing having a hollow handle connecting the housing to a vacuum source to carry away cut hairs from a subject's head.

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Class 257/E21.52 - Devices having no potential-jump barrier or surface barrier (EPO)


Subclass of Class 257 - Active solid-state devices (e.g., transistors, solid-state diodes)
Definition: This subclass is indented under subclass E21.002. This subclass
No. of patents: 5
Last issue date: 08/21/2007


NumberTitleIssue Date
7259091Technique for forming a passivation layer prior to depositing a barrier layer in a copper metallization layer
By performing a wet chemical process after etching a via, contaminations may be removed and a thin passivation layer may be formed that may then be readily removed in a subsequent sputter etch process for forming a barrier/adhesion layer. In a particular embodiment,...
08/21/2007
7202101Multi-metal layer MEMS structure and process for making the same
The present invention is directed to a structure comprised of alternating layers of metal and sacrificial material built up using standard CMOS processing techniques, a process for building such a structure, a process for fabricating devices from such a structure, a...
04/10/2007
7122387Deposition stop time detection apparatus and methods for fabricating copper wiring using the same
A method for fabricating copper wiring of a semiconductor device comprises forming a deposition stop time detection pattern having two trench structures positioned with a predetermined distance from each other on a dielectric substrate; positioning a deposition stop...
10/17/2006
7122389Method for processing semiconductor devices in a singulated form
Improved methods and apparatus are provided for the handling and testing of semiconductor devices. One embodiment comprises a die carrier for one or more semiconductor dice having very fine pitch electrical I/O (input/output) elements. The semiconductor dice are tem...
10/17/2006
6890773Dynamic maintenance of manufacturing system components
A method and an apparatus for sorting between actual and perceived errors related to processing of semiconductor wafers. A plurality of semiconductor wafers are processed. Fault data relating to the processed semiconductor wafers is acquired. A trend associated with...
05/10/2005
 
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