Inventor · disambiguated record
Tokuji Hayakawa
Also filed as: HAYAKAWA TOKUJI
15 granted patents·451 citations·filing 1986–2005
94Inventor score
Files withYAMAHA CORP9COLIN CORP2NIPPON MUSICAL INSTRUMENTS MFG2COLIN ELECTRONICS1COLIN ELECTRONISC CO LTD1
Top patents by PatentIndex Score
15 records- 0184US4719833ATone signal generation device with interpolation of sample pointsNIPPON MUSICAL INSTRUMENTS MFG·Filed 1986·Granted Jan 19, 1988·40 cites·13 claims
- 0279US5208416AAutomatic performance deviceYAMAHA CORP·Filed 1992·Granted May 4, 1993·38 cites·11 claims
- 0377US5054495AAutomatic blood-pressure measuring apparatusCOLIN ELECTRONICS·Filed 1989·Granted Oct 8, 1991·141 cites·9 claims
- 0469US5189238AAutomatic performance apparatus for causing different kinds of sound sources to synchronously generate tonesYAMAHA CORP·Filed 1990·Granted Feb 23, 1993·22 cites·19 claims
- 0569US4726276ASlur effect pitch control in an electronic musical instrumentNIPPON MUSICAL INSTRUMENTS MFG·Filed 1986·Granted Feb 23, 1988·21 cites·8 claims
- 0668US6486387B1Fingering information analyzer, electronic musical instrument including fingering information analysis and method thereforeYAMAHA CORP·Filed 2000·Granted Nov 26, 2002·6 cites·14 claims
- 0762US5422430AElectrical musical instrument providing sound field localizationYAMAHA CORP·Filed 1992·Granted Jun 6, 1995·17 cites·18 claims
- 0860US5942710AAutomatic accompaniment apparatus and method with chord variety progression patterns, and machine readable medium containing program thereforeYAMAHA CORP·Filed 1998·Granted Aug 24, 1999·21 cites·12 claims
- 0956US7365262B2Electronic musical apparatus for transposing musical pieceYAMAHA CORP·Filed 2005·Granted Apr 29, 2008·2 cites·23 claims
- 1049US6068601ABlood pressure measuring apparatusCOLIN CORP·Filed 1998·Granted May 30, 2000·45 cites·15 claims
- 1149US6025551AFingering information analyzer and electronic musical instrument with the sameYAMAHA CORP·Filed 1995·Granted Feb 15, 2000·19 cites·4 claims
- 1244US5730139ABlood pressure measuring apparatusCOLIN CORP·Filed 1996·Granted Mar 24, 1998·35 cites·5 claims
- 1344US5117728ASoft pedal effect applying apparatusYAMAHA CORP·Filed 1989·Granted Jun 2, 1992·8 cites·5 claims
- 1441US5326930AMusical playing data processorYAMAHA CORP·Filed 1993·Granted Jul 5, 1994·6 cites·15 claims
- 1538US4995399ABlood pressure measuring systemCOLIN ELECTRONISC CO LTD·Filed 1989·Granted Feb 26, 1991·30 cites·14 claims
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