USD568839SExpiredUtility

Photomask blank

58
Assignee: HOYA CORPPriority: May 17, 2004Filed: Jan 23, 2007Granted: May 13, 2008
Est. expiryMay 17, 2024(expired)· nominal 20-yr term from priority
Inventors:Masaru MitsuiShigekazu MatsuiMasao UshidaOsamu Nagarekawa
58
PatentIndex Score
9
Cited by
19
References
1
Claims

Claims

exact text as granted — not AI-modified
CLAIM 
     
       The ornamental design for a photomask blank, as shown and described.

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