Assignee
IWASHITA HIROYUKI
JP·7 granted patents·9 citations·filing 2009–2013
Top patents by PatentIndex Score
7 records- 0179US8329364B2Phase shift mask blank and phase shift maskIWASHITA HIROYUKI·Filed 2009·Granted Dec 11, 2012·5 cites·14 claims
- 0272US8507155B2Photomask blank, photomask, and method for manufacturing photomask blankIWASHITA HIROYUKI·Filed 2009·Granted Aug 13, 2013·3 cites·12 claims
- 0363US8304147B2Photomask blank, photomask, and method for manufacturing photomask blankIWASHITA HIROYUKI·Filed 2009·Granted Nov 6, 2012·1 cites·15 claims
- 0458US8512916B2Photomask blank, photomask, and method for manufacturing photomask blankIWASHITA HIROYUKI·Filed 2009·Granted Aug 20, 2013·0 cites·8 claims
- 0558US8431290B2Photomask blank, photomask, and methods of manufacturing the sameIWASHITA HIROYUKI·Filed 2009·Granted Apr 30, 2013·0 cites·25 claims
- 0657US8865378B2Photomask blank, photomask, and methods of manufacturing the sameIWASHITA HIROYUKI·Filed 2013·Granted Oct 21, 2014·0 cites·16 claims
- 0755US8404406B2Photomask blank and method for manufacturing the sameIWASHITA HIROYUKI·Filed 2009·Granted Mar 26, 2013·0 cites·19 claims
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