Inventor · disambiguated record
Mariko Umeda
Also filed as: UMEDA MARIKO
13 granted patents·1 pending application·204 citations·filing 1991–2014
91Inventor score
Top patents by PatentIndex Score
14 records- 0195US5361244AOptical head and information recording apparatusHITACHI LTD·Filed 1992·Granted Nov 1, 1994·93 cites·17 claims
- 0289US6807133B2Optical head and optical disk apparatusHITACHI LTD·Filed 2001·Granted Oct 19, 2004·25 cites·4 claims
- 0388US7507283B2Aqueous dispersion, ink composition and inkjet recording method using sameNIPPON KAYAKU KK·Filed 2005·Granted Mar 24, 2009·11 cites·18 claims
- 0480US7558178B2Information recording/reproducing method and information recording/reproducing apparatusHITACHI LTD·Filed 2005·Granted Jul 7, 2009·4 cites·5 claims
- 0579US7746734B2Optical disk apparatus and tracking methodHITACHI LTD·Filed 2007·Granted Jun 29, 2010·3 cites·10 claims
- 0673US5511050AFocus error detecting method and optical head using the sameHITACHI LTD·Filed 1991·Granted Apr 23, 1996·21 cites·30 claims
- 0773US5490133AOptical information processing apparatus and method of controlling position of optical spot and reproducing signalsHITACHI LTD·Filed 1991·Granted Feb 6, 1996·22 cites·31 claims
- 0868US5784347AOptical disk device having optical phase compensatorHITACHI LTD·Filed 1996·Granted Jul 21, 1998·20 cites·17 claims
- 0963US7068572B2Optical head and optical disk apparatusHITACHI LTD·Filed 2004·Granted Jun 27, 2006·4 cites·7 claims
- 1054US8657432B2Ink composition and textile printing method using the sameSHIMIZU SHINSUKE·Filed 2009·Granted Feb 25, 2014·0 cites·10 claims
- 1146US6653454B1Formazane compounds and method of dyeing using the sameNIPPON KAYAKU KK·Filed 2000·Granted Nov 25, 2003·1 cites·6 claims
- 1245USRE43018EOptical disk apparatus and tracking methodUMEDA MARIKO·Filed 2011·Granted Dec 13, 2011·0 cites·10 claims
- 1345US7352673B2Recording method and recording apparatusHITACHI LTD·Filed 2004·Granted Apr 1, 2008·0 cites·13 claims
- 1445US2016102208A1Water-soluble azo compound or salt thereof, ink composition, and colored articleNIPPON KAYAKU KK·Filed 2014·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →