Inventor · disambiguated record
Hiromitsu Umezawa
Also filed as: UMEZAWA HIROMITSU
11 granted patents·1 pending application·88 citations·filing 1995–2006
89Inventor score
Files withFDK CORP11
Top patents by PatentIndex Score
12 records- 0167US7280264B2Magneto-optical deviceFDK CORP·Filed 2004·Granted Oct 9, 2007·11 cites·19 claims
- 0267US6417952B1Faraday rotation angle varying deviceFDK CORP·Filed 2000·Granted Jul 9, 2002·11 cites·14 claims
- 0357US5521741APolarization plane switch and optical switching device using the sameFDK CORP·Filed 1995·Granted May 28, 1996·28 cites·8 claims
- 0449US7336418B1Optical attenuatorFDK CORP·Filed 2000·Granted Feb 26, 2008·4 cites·4 claims
- 0547US7551343B2Magneto-optical device and manufacturing method thereofFDK CORP·Filed 2006·Granted Jun 23, 2009·0 cites·8 claims
- 0644US7009767B2Polarization separating/synthesizing element and optical device using itFDK CORP·Filed 2001·Granted Mar 7, 2006·2 cites·5 claims
- 0740US6288827B1Faraday rotatorFDK CORP·Filed 1999·Granted Sep 11, 2001·10 cites·14 claims
- 0838US6108120AFaraday rotation angle varying apparatusFDK CORP·Filed 1998·Granted Aug 22, 2000·9 cites·14 claims
- 0937US5566017AMaterial for magneto-optical element and faraday rotator using the sameFDK CORP·Filed 1995·Granted Oct 15, 1996·5 cites·7 claims
- 1035US5965287AMagneto-optical element material and Faraday element using the sameFDK CORP·Filed 1997·Granted Oct 12, 1999·5 cites·15 claims
- 1132US2004013343A1Polarizer and optical device using itFiled 2001·Application pending·0 cites
- 1225US5547613AMagneto-optical element material formed of magnetic garnet single crystalsFDK CORP·Filed 1995·Granted Aug 20, 1996·3 cites·2 claims
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