Inventor
KUNII KOKI
JP6 patents
Patents
6 patentsUS7128459B2Oct 31, 2006
Light-guide plate and method for manufacturing the same
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US6671109B2Dec 30, 2003
ND filter having composite PVD film of metal and its oxide
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US7230779B2Jun 12, 2007
ND filter and aperture diaphragm apparatus
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US7483226B2Jan 27, 2009
ND filter, manufacturing method thereof, and aperture device
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US7440204B2Oct 21, 2008
ND filter of optical film laminate type with carbon film coating
NIDEC COPAL CORP5 citations60
US7388723B2Jun 17, 2008
ND filter and light quantity diaphragming device including the same
NIDEC COPAL CORP2 citations60