Inventor · disambiguated record
Katsura Nakajima
Also filed as: NAKAJIMA KATSURA
5 granted patents·2 pending applications·17 citations·filing 2003–2012
73Inventor score
Top patents by PatentIndex Score
7 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
- 0353US7685698B2Manufacturing method of magnet rotorNISCA CORP·Filed 2006·Granted Mar 30, 2010·2 cites·4 claims
- 0452US2008316628A1Density filter, method of forming the density filter and apparatus thereofNISCA CORP·Filed 2008·Application pending·0 cites
- 0544US7960876B2Magnet rotor, electromagnetic drive device and light quantity adjustment device using the magnet rotorNISCA CORP·Filed 2009·Granted Jun 14, 2011·0 cites·9 claims
- 0639US8654455B2Light quantity adjustment apparatus, lens unit and optical apparatus provided with the sameNAKAJIMA KATSURA·Filed 2012·Granted Feb 18, 2014·0 cites·21 claims
- 0733US2012194796A1Light quantity adjustment apparatus lens unit and optical apparatus provided with the sameNAKAJIMA KATSURA·Filed 2012·Application pending·0 cites
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