Inventor · disambiguated record
Keisuke Tejima
Also filed as: TEJIMA KEISUKE
36 granted patents·342 citations·filing 1987–2012
98Inventor score
Technology areasG11B
Top patents by PatentIndex Score
36 records- 0190USD305652SPortable radiotelephoneSONY CORP·Filed 1988·Granted Jan 23, 1990·29 cites·1 claims
- 0284USD578505SAmplifierSONY CORP·Filed 2007·Granted Oct 14, 2008·30 cites·1 claims
- 0381USD475036SCombined recorder and disc playerSONY CORP·Filed 2002·Granted May 27, 2003·26 cites·1 claims
- 0481USD426540SStandSONY CORP·Filed 1998·Granted Jun 13, 2000·23 cites·1 claims
- 0579USD564493SCombined disc recorder and hard disc driveSONY CORP·Filed 2006·Granted Mar 18, 2008·24 cites·1 claims
- 0675USD437307SSpeaker boxSONY CORP·Filed 1999·Granted Feb 6, 2001·18 cites·1 claims
- 0769USD475357SOptical disc playerSONY CORP·Filed 2002·Granted Jun 3, 2003·15 cites·1 claims
- 0866USD597103SDisc playerSONY CORP·Filed 2008·Granted Jul 28, 2009·14 cites·1 claims
- 0966USD569840SAmplifierSONY CORP·Filed 2006·Granted May 27, 2008·14 cites·1 claims
- 1065USD316866SMagnetic still cameraSONY CORP·Filed 1989·Granted May 14, 1991·10 cites·1 claims
- 1164USD435034SCombined amplifier and radio receiverSONY CORP·Filed 1999·Granted Dec 12, 2000·12 cites·1 claims
- 1260USD585859SCombined disc recorder and hard disk driveSONY CORP·Filed 2007·Granted Feb 3, 2009·11 cites·1 claims
- 1360USD416258SSpeaker boxSONY CORP·Filed 1998·Granted Nov 9, 1999·10 cites·1 claims
- 1460USD311014SStill video cameraSONY CORP·Filed 1988·Granted Oct 2, 1990·8 cites·1 claims
- 1556USD580385SDisc playerSONY CORP·Filed 2007·Granted Nov 11, 2008·9 cites·1 claims
- 1656USD570330SAmplifierSONY CORP·Filed 2006·Granted Jun 3, 2008·9 cites·1 claims
- 1754USD371363SRadio receiverSONY CORP·Filed 1995·Granted Jul 2, 1996·8 cites·1 claims
- 1850USD585858SCombined disc recorder and hard disc driveSONY CORP·Filed 2007·Granted Feb 3, 2009·7 cites·1 claims
- 1950USD582868SCombined disc recorder and hard disc driveSONY CORP·Filed 2007·Granted Dec 16, 2008·7 cites·1 claims
- 2049USD307909SFront panel for a compact disc playerFORD MOTOR CO·Filed 1987·Granted May 15, 1990·6 cites·1 claims
- 2148USD503693SDisc recorderSONY CORP·Filed 2003·Granted Apr 5, 2005·5 cites·1 claims
- 2245USD423009SCombined disc recorder and playerSONY CORP·Filed 1999·Granted Apr 18, 2000·5 cites·1 claims
- 2345USD347432STape playerSONY CORP·Filed 1992·Granted May 31, 1994·4 cites·1 claims
- 2444US6057995ADisc cartridge with aperture for access to disc provided with shutter arranged for minimizing overall size of cartridgeSONY CORP·Filed 1997·Granted May 2, 2000·8 cites·10 claims
- 2543USD459715SReceiverSONY CORP·Filed 2001·Granted Jul 2, 2002·4 cites·1 claims
- 2641USD563942SCombined disc recorder and hard disc driveSONY CORP·Filed 2006·Granted Mar 11, 2008·4 cites·1 claims
- 2741USD513242SDisc recorderSONY CORP·Filed 2004·Granted Dec 27, 2005·3 cites·1 claims
- 2841USD417451SDisc recorder combined with radio receiver and disc playerSONY CORP·Filed 1998·Granted Dec 7, 1999·4 cites·1 claims
- 2940USD681577SDisc playerTEJIMA KEISUKE·Filed 2012·Granted May 7, 2013·4 cites·1 claims
- 3040USD498230SSpeaker boxSONY CORP·Filed 2003·Granted Nov 9, 2004·3 cites·1 claims
- 3137USD619148SDisc playerSONY CORP·Filed 2009·Granted Jul 6, 2010·2 cites·1 claims
- 3237USD564477SDisc playerSONY CORP·Filed 2006·Granted Mar 18, 2008·2 cites·1 claims
- 3337USD519092SDisc playerSONY CORP·Filed 2004·Granted Apr 18, 2006·2 cites·1 claims
- 3434USD497895SDisc playerSONY CORP·Filed 2003·Granted Nov 2, 2004·1 cites·1 claims
- 3531USD500018SDisc playerSONY CORP·Filed 2003·Granted Dec 21, 2004·0 cites·1 claims
- 3629USD711925SDisc playerTEJIMA KEISUKE·Filed 2012·Granted Aug 26, 2014·1 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →