Inventor · disambiguated record
Katsumi Maekawa
Also filed as: MAEKAWA KATSUMI
19 granted patents·3 pending applications·414 citations·filing 1987–2008
95Inventor score
Top patents by PatentIndex Score
22 records- 0191US6160679ARecording medium device for use with a tape cartridge having an auxiliary memory viewable through a cartridge discrimination openingSONY CORP·Filed 1996·Granted Dec 12, 2000·75 cites·18 claims
- 0289US6611394B1Recording medium, tape drive, and method for identifying type of recording mediumSONY CORP·Filed 1999·Granted Aug 26, 2003·60 cites·13 claims
- 0388USD474472SInformation recording mediumSONY CORP·Filed 2002·Granted May 13, 2003·40 cites·1 claims
- 0484US4727468ADigital PWM control circuitTOSHIBA KK·Filed 1987·Granted Feb 23, 1988·51 cites·10 claims
- 0577US6742349B1Equipment sensing system and equipment control deviceSANYO ELECTRIC CO·Filed 2000·Granted Jun 1, 2004·32 cites·24 claims
- 0677US5942876AInverter controllerTOSHIBA KK·Filed 1997·Granted Aug 24, 1999·54 cites·8 claims
- 0776US5448537AMagnet-optical disc drive device with sure disc placementSONY CORP·Filed 1993·Granted Sep 5, 1995·26 cites·7 claims
- 0874US6865047B2Single reel tape cartridge and recording and reproducing device using the tape cartridgeSONY CORP·Filed 2001·Granted Mar 8, 2005·11 cites·15 claims
- 0967US6991193B2Tape drive device, tape extraction device and tape cassetteSONY CORP·Filed 2001·Granted Jan 31, 2006·5 cites·3 claims
- 1067US4860186APWM controller having synchronous and asynchronous modeTOSHIBA KK·Filed 1988·Granted Aug 22, 1989·25 cites·8 claims
- 1164US5791578ARecording medium device with memory terminals and shutter sized and shaped in relation theretoSONY CORP·Filed 1995·Granted Aug 11, 1998·17 cites·25 claims
- 1257US5712744AMagnetic tape loading deviceSONY CORP·Filed 1996·Granted Jan 27, 1998·13 cites·6 claims
- 1353US7312594B2Control system for synchronous machineTOSHIBA KK·Filed 2005·Granted Dec 25, 2007·3 cites·5 claims
- 1452US8564907B2Position determining member to align a magnetic tape cartridge in a magnetic recording and reproducing apparatusHONDA HIDETOSHI·Filed 2008·Granted Oct 22, 2013·0 cites·8 claims
- 1550US6762903B2Tape driveSONY CORP·Filed 2002·Granted Jul 13, 2004·1 cites·7 claims
- 1647US2005092856A1Tape drive apparatus, tape extraction apparatus and tape cassetteFiled 2004·Application pending·0 cites
- 1747US2005092857A1Tape drive apparatus, tape extraction apparatus and tape cassetteFiled 2004·Application pending·0 cites
- 1844US7252257B2Tape drive apparatus, tape extraction apparatus and tape cassetteSONY CORP·Filed 2004·Granted Aug 7, 2007·0 cites·2 claims
- 1939US6869036B2Recording and/or reproducing apparatusSONY CORP·Filed 2003·Granted Mar 22, 2005·0 cites·3 claims
- 2037US8274246B2Inverter control device and AC motor control device using this inverter control deviceMAEKAWA KATSUMI·Filed 2008·Granted Sep 25, 2012·1 cites·6 claims
- 2136US2005061902A1Tape reel and tape cartridge with the tape reelFiled 2002·Application pending·0 cites
- 2229US5992784ALid assembly for tape cartridgeSONY CORP·Filed 1998·Granted Nov 30, 1999·0 cites·18 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →