Inventor · disambiguated record

Nobutaka Kumada

Also filed as: KUMADA NOBUTAKA

2 granted patents·15 citations·filing 2003–2003

58Inventor score

Technology areasG02B

Files withNISCA CORP2

Top patents by PatentIndex Score

2 records

0158US6842302B2ND filter, method for producing the ND filter, and aperture device including the ND filterNISCA CORP·Filed 2003·Granted Jan 11, 2005·8 cites·7 claims
0257US6842301B2ND filter and aperture device including the sameNISCA CORP·Filed 2003·Granted Jan 11, 2005·7 cites·6 claims

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Nobutaka Kumada — Patent Inventor | PatentIndex