System for using a two part cover for and a box for...

Photocopying – Projection printing and copying cameras – Detailed holder for original

Reexamination Certificate

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Details

C355S072000

Reexamination Certificate

active

11299787

ABSTRACT:
A system and method are used to protect a mask from being contaminated by airborne particles. They include providing a reticle secured in a two-part cover. The two part cover includes a removable protection device used to protect the reticle from contaminants. The cover can be held inside a pod or box that can be used to transport the cover through a lithography system from an atmospheric section to a vacuum section. While in the vacuum section, the removable cover can be moved during an exposure process during which a pattern on the reticle can be formed on a wafer.

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