Inventor · disambiguated record
Akihiko Yoshizawa
Also filed as: YOSHIZAWA AKIHIKO
26 granted patents·583 citations·filing 1986–2003
97Inventor score
Top patents by PatentIndex Score
26 records- 0192US6246271B1Frequency multiplier capable of generating a multiple output without feedback controlTOSHIBA KK·Filed 2000·Granted Jun 12, 2001·52 cites·20 claims
- 0286US4837758AMagneto-optical recording reproducing device having field applying meansOLYMPUS OPTICAL CO·Filed 1986·Granted Jun 6, 1989·35 cites·7 claims
- 0385US6163288ADigital-to-analog converter in which an analog output of low order bits is attenuated, and added to an analog output of high order bitsTOSHIBA KK·Filed 1998·Granted Dec 19, 2000·57 cites·20 claims
- 0484US6259290B1Delay locked loop having a mis-lock detecting circuitTOSHIBA KK·Filed 1999·Granted Jul 10, 2001·46 cites·15 claims
- 0581US5594391AN-stage ring connected voltage controlled oscillatorTOSHIBA KK·Filed 1994·Granted Jan 14, 1997·50 cites·9 claims
- 0680US4841510AOptical characteristic measuring apparatus for an optical recording medium substrateOLYMPUS OPTICAL CO·Filed 1987·Granted Jun 20, 1989·24 cites·10 claims
- 0775US5566142AApparatus using an optical pickupOLYMPUS OPTICAL CO·Filed 1995·Granted Oct 15, 1996·28 cites·10 claims
- 0874US6784719B2Level shift circuit for transmitting signal from leading edge to trailing edge of input signalTOSHIBA KK·Filed 2002·Granted Aug 31, 2004·17 cites·20 claims
- 0973US6323738B1Voltage-controlled ring oscillator with level converting and amplitude control circuitsTOSHIBA KK·Filed 2000·Granted Nov 27, 2001·12 cites·27 claims
- 1071US5909474APhase-locked loop systemTOSHIBA KK·Filed 1996·Granted Jun 1, 1999·34 cites·12 claims
- 1171US5898167AOptical pick-up head and integrated type optical unit for use in optical pick-up headOLYMPUS OPTICAL CO·Filed 1998·Granted Apr 27, 1999·18 cites·6 claims
- 1271US4792227AApparatus for measuring the refractive index of a substrate for an optical recording medium and method of measuring the sameOLYMPUS OPTICAL CO·Filed 1987·Granted Dec 20, 1988·17 cites·5 claims
- 1368US5955902AFrequency multiplier using a voltage controlled delay circuitTOSHIBA KK·Filed 1997·Granted Sep 21, 1999·31 cites·24 claims
- 1467US6538490B2Offset compensation circuit and offset compensation methodTOSHIBA KK·Filed 2002·Granted Mar 25, 2003·14 cites·28 claims
- 1567US5814807AOptical pick-up head and integrated type optical unit for use in optical pick-up headOLYMPUS OPTICAL CO·Filed 1997·Granted Sep 29, 1998·24 cites·5 claims
- 1664US6005420AFrequency multiplying circuit having a greater multiplying ratioTOSHIBA KK·Filed 1997·Granted Dec 21, 1999·27 cites·20 claims
- 1761US6011444AVoltage controlled oscillator circuitTOSHIBA KK·Filed 1998·Granted Jan 4, 2000·16 cites·20 claims
- 1860US6177846B1Ring oscillator type voltage controlled oscillatorTOSHIBA KK·Filed 1999·Granted Jan 23, 2001·16 cites·20 claims
- 1960US5631774APolarizing beam splitter and optical pick-up head comprising the sameOLYMPUS OPTICAL CO·Filed 1995·Granted May 20, 1997·14 cites·14 claims
- 2060US5432760AMethod of measuring phase difference of opto-magnetic record medium and apparatus for carrying out said methodOLYMPUS OPTICAL CO·Filed 1993·Granted Jul 11, 1995·12 cites·7 claims
- 2158US6696828B2Integrated circuit and lot selection system thereforTOSHIBA KK·Filed 2000·Granted Feb 24, 2004·7 cites·9 claims
- 2253US5804814AOptical pick-up head and integrated type optical unit for use in optical pick-up headFiled 1995·Granted Sep 8, 1998·14 cites·5 claims
- 2352US6611177B2Voltage controlled oscillator including fluctuation transmitter for transmitting potential fluctuation by noiseTOSHIBA KK·Filed 2001·Granted Aug 26, 2003·6 cites·33 claims
- 2445US6853256B2Voltage controlled oscillator with reference current generatorTOSHIBA KK·Filed 2003·Granted Feb 8, 2005·4 cites·16 claims
- 2535US5028774AMethod and apparatus for detecting and measuring the refractive index of an optical disc substrateOLYMPUS OPTICAL CO·Filed 1990·Granted Jul 2, 1991·7 cites·9 claims
- 2632US4788678AOptical information recording media substrateOLYMPUS OPTICAL CO·Filed 1986·Granted Nov 29, 1988·1 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →