Inventor · disambiguated record
Kenzaburou Iijima
Also filed as: IIJIMA KENZABUROU
26 granted patents·464 citations·filing 1985–2003
97Inventor score
Top patents by PatentIndex Score
26 records- 0193US4983916ACompact magnetic encoderYAMAHA CORP·Filed 1989·Granted Jan 8, 1991·72 cites·2 claims
- 0287US4944028ANon-contact type pattern sensor with variable clearance compensationNIPPON MUSICAL INSTRUMENTS MFG·Filed 1988·Granted Jul 24, 1990·42 cites·2 claims
- 0375US5012238AAbsolute encoderYAMAHA CORP·Filed 1989·Granted Apr 30, 1991·26 cites·5 claims
- 0469US7026712B2Peltier module with durable power supply lines and exothermic module with built-in coolerYAMAHA CORP·Filed 2003·Granted Apr 11, 2006·16 cites·23 claims
- 0569US6917638B2Heat radiator for electronic device and method of making itYAMAHA CORP·Filed 2001·Granted Jul 12, 2005·15 cites·16 claims
- 0669US4855740AKeyboardYAMAHA CORP·Filed 1987·Granted Aug 8, 1989·46 cites·3 claims
- 0769US4782329ADisplacement detector for an encoderNIPPON MUSICAL INSTRUMENTS MFG·Filed 1987·Granted Nov 1, 1988·20 cites·11 claims
- 0867US5481355AFlying spherical body measuring apparatusYAMAHA CORP·Filed 1993·Granted Jan 2, 1996·45 cites·3 claims
- 0965US5241140ASpeaker diaphragmYAMAHA CORP·Filed 1990·Granted Aug 31, 1993·29 cites·3 claims
- 1063US5131986AGolf club head and its manufacturingYAMAHA CORP·Filed 1990·Granted Jul 21, 1992·37 cites·22 claims
- 1157US5946597ASemiconductor chip mounting methodYAMAHA CORP·Filed 1997·Granted Aug 31, 1999·22 cites·12 claims
- 1256US4851752AMagnetic encoder and a method for producing the sameYAMAHA CORP·Filed 1988·Granted Jul 25, 1989·12 cites·6 claims
- 1353US4954803AMagnetic-resistor sensor and a magnetic encoder using such a sensorYAMAHA CORP·Filed 1989·Granted Sep 4, 1990·10 cites·6 claims
- 1451US4894097ARare earth type magnet and a method for producing the sameYAMAHA CORP·Filed 1987·Granted Jan 16, 1990·9 cites·11 claims
- 1550US6942399B2Optical fiber coupler reinforcing member and optical fiber couplerRICHSTONE LTD·Filed 2003·Granted Sep 13, 2005·4 cites·16 claims
- 1647US4847879AFrequency sensing and control circuitYAMAHA CORP·Filed 1988·Granted Jul 11, 1989·8 cites·4 claims
- 1743US4806860AOverlapped magnetoresistive displacement detecting transducers having closely spaced longitudinal centersNIPPON MUSICAL INSTRUMENTS MFG·Filed 1987·Granted Feb 21, 1989·8 cites·7 claims
- 1842US4987040AMagnetic recording medium for displacement detectorsYAMAHA CORP·Filed 1988·Granted Jan 22, 1991·8 cites·9 claims
- 1941US4811254ADisplacement detector for an encoderNIPPON MUSICAL INSTRUMENTS MFG·Filed 1986·Granted Mar 7, 1989·9 cites·8 claims
- 2039US5037800AMethod of drawing glass encased superconductive oxide coreYAMAHA CORP·Filed 1989·Granted Aug 6, 1991·6 cites·6 claims
- 2139US4987414ASignal processing circuit for an encoderYAMAHA CORP·Filed 1989·Granted Jan 22, 1991·6 cites·7 claims
- 2236US4908076AFE-B magnets containing Nd-Pr-Ce rare earth elementsYAMAHA CORP·Filed 1987·Granted Mar 13, 1990·4 cites·4 claims
- 2335US4879674AInput circuit for a digital phase locked loopYAMAHA CORP·Filed 1988·Granted Nov 7, 1989·4 cites·2 claims
- 2435US4768119ANon-contact head with variable clearance compensating meansNIPPON MUSICAL INSTRUMENTS MFG·Filed 1987·Granted Aug 30, 1988·4 cites·7 claims
- 2531US4683013AMethod for producing a shadow mask for a color cathode ray tubeNIPPON MUSICAL INSTRUMENTS MFG·Filed 1985·Granted Jul 28, 1987·1 cites·3 claims
- 2630US5007057APower source monitor and a rotary encoder with such a monitorYAMAHA CORP·Filed 1989·Granted Apr 9, 1991·1 cites·4 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →