US PATENT SUBCLASS 438 / 472
.~ By vibrating or impacting


Current as of: June, 1999
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438 /   HD   SEMICONDUCTOR DEVICE MANUFACTURING: PROCESS

471  DF  GETTERING OF SUBSTRATE {4}
472.~ By vibrating or impacting


DEFINITION

Classification: 438/472

By vibrating or impacting:

(under subclass 471) Process wherein a step of vibrating the semiconductive substrate or striking the semiconductive substrate with solid material is utilized to produce a gettering effect.

SEE OR SEARCH CLASS

134, Cleaning and Liquid Contact With Solids, especially

6+, for a process of cleaning a semiconductor wafer by impacting the wafer with solid matter.