Abrading – Abrading process – Utilizing fluent abradant
Reexamination Certificate
2007-09-18
2007-09-18
Eley, Timothy V. (Department: 3724)
Abrading
Abrading process
Utilizing fluent abradant
C451S041000, C451S059000, C451S063000, C451S527000, C451S550000
Reexamination Certificate
active
10855537
ABSTRACT:
A polishing pad (20) for polishing a wafer (32) or other article, the pad having a groove network (60) configured to increase the residence time polishing medium (46) on the pad. The groove network has a first portion (72) that may extend substantially radially outwardly and an oscillating portion (74) that begins at a transition point (76) and is configured to slow the radially outward flow of the polishing medium.
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Elmufdi Carolina L.
Palaparthi Ravichandra V.
Biederman Blake T.
Eley Timothy V.
Rohm and Haas Electronic Materials CMP Holdings Inc.
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