The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 15, 1995
Filed:
May. 25, 1994
Applicant:
Inventors:
Assignee:
Nikon Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
235381 ; 235375 ;
Abstract
An exposure apparatus equipped with a substrate supervisory device is contained in an air-conditioned chamber with a front door. The device has a library for storing a plurality of reticle cases with respective reticles therein, a bar code reader for reading respective bar codes of the reticle cases and shifting means for shifting the bar code reader for the reading. When an operator stores the cases in the library by opening the door of the chamber, the bar code reader is retreated to a predetermined position and the shifting means will not be activated for the operator's safety.