Inventor · disambiguated record
Masaki Kagawa
Also filed as: KAGAWA MASAKI · KOISHIKAWA HATSUE
24 granted patents·1 pending application·374 citations·filing 1993–2019
96Inventor score
Top patents by PatentIndex Score
25 records- 0186US6269070B1Optical disc having specified track pitch, push-pull signal, and cross-track signalSONY CORP·Filed 1998·Granted Jul 31, 2001·57 cites·5 claims
- 0285US6331746B1ActuatorMINEBEA CO LTD·Filed 2000·Granted Dec 18, 2001·27 cites·12 claims
- 0382US6087755ARadial gap type cylindrical motorMINEBEA CO LTD·Filed 1998·Granted Jul 11, 2000·51 cites·37 claims
- 0475US6194806B1Compact cylindrical radial gap type motorMINEBEA CO LTD·Filed 1999·Granted Feb 27, 2001·41 cites·11 claims
- 0574US6201324B1Stator pole teeth for a claw pole stepping motorMINEBEA CO LTD·Filed 1999·Granted Mar 13, 2001·37 cites·16 claims
- 0670US5822294AOptical recording medium having a specified range of pit widths and pit depthsSONY CORP·Filed 1997·Granted Oct 13, 1998·21 cites·15 claims
- 0767US6057621ACylindrical radial gap type motor structureMINEBEA CO LTD·Filed 1998·Granted May 2, 2000·29 cites·11 claims
- 0866US7825556B2Stepping motorMINEBEA CO LTD·Filed 2007·Granted Nov 2, 2010·4 cites·9 claims
- 0966US7635931B2Stepping motorMINEBEA CO LTD·Filed 2007·Granted Dec 22, 2009·4 cites·2 claims
- 1064US11996735B2MotorMINEBEA MITSUMI INC·Filed 2019·Granted May 28, 2024·0 cites·8 claims
- 1164US8304955B2PM stepping motor having a stator assemblySUZUKI YUZURU·Filed 2008·Granted Nov 6, 2012·4 cites·1 claims
- 1263US7012747B2Polarizing beam splitter and polarizer using the sameSONY CORP·Filed 2002·Granted Mar 14, 2006·8 cites·5 claims
- 1360US5946287AOptical disk having pits with push-pull signal of opposite polarity to that of guide groovesSONY CORP·Filed 1996·Granted Aug 31, 1999·14 cites·1 claims
- 1457US6140726ARadial gap cylindrical motor having an increased number of slotsMINEBEA CO LTD·Filed 1998·Granted Oct 31, 2000·21 cites·8 claims
- 1556US8643237B2Motor support structure and actuator incorporating sameMIYAJI HARUKA·Filed 2011·Granted Feb 4, 2014·1 cites·7 claims
- 1655US6765320B1ActuatorMINEBEA CO LTD·Filed 2000·Granted Jul 20, 2004·7 cites·11 claims
- 1752US5400318AEdge detection of information pit pattern by establishing threshold voltage from a closely spaced pit patternSONY CORP·Filed 1993·Granted Mar 21, 1995·9 cites·8 claims
- 1847US6756871B1Actuator with number of stator teeth equal to number of rotor polesMINEBEA CO LTD·Filed 1999·Granted Jun 29, 2004·14 cites·19 claims
- 1947US6400677B2High recording density optical discSONY CORP·Filed 1998·Granted Jun 4, 2002·7 cites·4 claims
- 2046US5838654AOptical recording medium having a specified range of pit widths and pit depthsSONY CORP·Filed 1997·Granted Nov 17, 1998·7 cites·20 claims
- 2144US6850476B2Optical recording mediumSONY CORP·Filed 2003·Granted Feb 1, 2005·0 cites·13 claims
- 2243US7348056B2Fine particle dispersion composition, optical component, optical film laminate, polarization splitting device, and method for manufacturing the optical componentSONY CORP·Filed 2004·Granted Mar 25, 2008·1 cites·8 claims
- 2342US6222808B1Optical information reproducing method and apparatusSONY CORP·Filed 1997·Granted Apr 24, 2001·9 cites·3 claims
- 2436US2004005482A1Antireflection film and antireflection layer-affixed plastic substrateFiled 2002·Application pending·0 cites
- 2532US6618345B1Reduced crosstalk optical recording medium using an optically related track pitchSONY CORP·Filed 1996·Granted Sep 9, 2003·1 cites·10 claims
Join the waitlist — get patent alerts
Get an alert when Masaki Kagawa files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →