Inventor · disambiguated record
Masayuki Katakura
Also filed as: KATAKURA MASAYUKI
51 granted patents·435 citations·filing 1976–2021
98Inventor score
Files withSONY CORP37TOKYO SHIBAURA ELECTRIC CO6SONY SEMICONDUCTOR SOLUTIONS CORP5KATAKURA MASAYUKI1SEMICONDUCTOR TECH ACAD RES CT1
Top patents by PatentIndex Score
51 records- 0187US7123175B2Angle detection apparatus computing phase differences between first and second phase anglesTAMAGAWA SEIKI CO LTD·Filed 2005·Granted Oct 17, 2006·16 cites·19 claims
- 0286US6005445APhase adjustment circuit including a ring oscillator in a phase locked loopSONY CORP·Filed 1997·Granted Dec 21, 1999·40 cites·5 claims
- 0381US4288707AElectrically variable impedance circuitTOKYO SHIBAURA ELECTRIC CO·Filed 1979·Granted Sep 8, 1981·20 cites·10 claims
- 0480US6597650B2Nonlinearity compensation circuit and method, control circuit and method for nonlinearity compenstation circuit and recording and/or playback apparatus employing the sameSONY CORP·Filed 2001·Granted Jul 22, 2003·28 cites·29 claims
- 0575US11271476B2Power supply circuit comprising a charge pump circuit and a feedback circuit for the charge pump circuitSONY SEMICONDUCTOR SOLUTIONS CORP·Filed 2018·Granted Mar 8, 2022·2 cites·7 claims
- 0669US9200844B2Rotary agitation type heat treatment apparatusKATAKURA MASAYUKI·Filed 2012·Granted Dec 1, 2015·1 cites·11 claims
- 0767US7619473B2Fully-differential amplifierSEMICONDUCTOR TECH ACAD RES CT·Filed 2007·Granted Nov 17, 2009·5 cites·9 claims
- 0866US4516081AVoltage controlled variable gain circuitSONY CORP·Filed 1982·Granted May 7, 1985·15 cites·12 claims
- 0965US6075413AAmplifier circuit and control signal generatorSONY CORP·Filed 1999·Granted Jun 13, 2000·30 cites·3 claims
- 1064US8970312B2Differential ring oscillation circuit, device, and oscillation control methodSONY CORP·Filed 2013·Granted Mar 3, 2015·2 cites·8 claims
- 1163US9264096B2ReceiverSONY CORP·Filed 2013·Granted Feb 16, 2016·3 cites·20 claims
- 1263US4422049AGain control circuitSONY CORP·Filed 1981·Granted Dec 20, 1983·12 cites·19 claims
- 1362US6160534ALiquid crystal display drive circuit and liquid crystal displaySONY CORP·Filed 1998·Granted Dec 12, 2000·25 cites·60 claims
- 1462US4804904AVoltage to current converters for use in an active filter and with a moise reduction circuitSONY CORP·Filed 1987·Granted Feb 14, 1989·13 cites·7 claims
- 1562US4739304ADigital-to-analog converting systemSONY CORP·Filed 1986·Granted Apr 19, 1988·18 cites·8 claims
- 1661US12424991B2Current source circuit and electronic deviceSONY SEMICONDUCTOR SOLUTIONS CORP·Filed 2021·Granted Sep 23, 2025·0 cites·9 claims
- 1758US6081166AVoltage controlled oscillator including a plurality of buffer circuits diodes, current sources, MIS capacitorsSONY CORP·Filed 1998·Granted Jun 27, 2000·15 cites·10 claims
- 1858US4422051AGain control circuitSONY CORP·Filed 1981·Granted Dec 20, 1983·12 cites·17 claims
- 1957US7019567B2Sine wave generation circuitSONY CORP·Filed 2004·Granted Mar 28, 2006·5 cites·7 claims
- 2056US4109165ARms circuitTOKYO SHIBAURA ELECTRIC CO·Filed 1977·Granted Aug 22, 1978·11 cites·4 claims
- 2155US4547741ANoise reduction circuit with a main signal path and auxiliary signal path having a high pass filter characteristicSONY CORP·Filed 1983·Granted Oct 15, 1985·15 cites·21 claims
- 2255US4453091ALevel detecting circuitSONY CORP·Filed 1982·Granted Jun 5, 1984·11 cites·17 claims
- 2354US5446409ACross coupled symmetrical current source unitSONY CORP·Filed 1993·Granted Aug 29, 1995·11 cites·9 claims
- 2454US4462008ANoise reduction circuit having voltage to current converting means in the auxiliary channelSONY CORP·Filed 1982·Granted Jul 24, 1984·10 cites·20 claims
- 2554US4427950ANoise reduction circuitSONY CORP·Filed 1981·Granted Jan 24, 1984·11 cites·27 claims
- 2653US11169563B2Semiconductor circuit apparatus and system equipped with semiconductor circuit apparatusSONY SEMICONDUCTOR SOLUTIONS CORP·Filed 2019·Granted Nov 9, 2021·0 cites·20 claims
- 2752US4203043ATristate changeover switching circuitTOKYO SHIBAURA ELECTRIC CO·Filed 1978·Granted May 13, 1980·6 cites·9 claims
- 2851US4498053ACurrent amplifierSONY CORP·Filed 1983·Granted Feb 5, 1985·9 cites·19 claims
- 2950US9197824B2Image pickup unit, method of driving image pickup unit, and image pickup display systemSONY CORP·Filed 2013·Granted Nov 24, 2015·0 cites·14 claims
- 3050US7522691B2Phase-locked circuitSONY CORP·Filed 2005·Granted Apr 21, 2009·2 cites·14 claims
- 3149US4433254ALevel detecting circuitSONY CORP·Filed 1981·Granted Feb 21, 1984·8 cites·20 claims
- 3248US6104626AAnalog value memory circuitSONY CORP·Filed 1997·Granted Aug 15, 2000·10 cites·7 claims
- 3348US4521738AGain control circuitSONY CORP·Filed 1983·Granted Jun 4, 1985·6 cites·19 claims
- 3445US6154192ALiquid crystal display device and data line drive circuit of liquid crystal display deviceSONY CORP·Filed 1998·Granted Nov 28, 2000·14 cites·20 claims
- 3545US4441083ANoise reduction circuitSONY CORP·Filed 1981·Granted Apr 3, 1984·6 cites·16 claims
- 3644US7631030B2Sine wave multiplication circuit and sine wave multiplication methodSONY CORP·Filed 2005·Granted Dec 8, 2009·0 cites·4 claims
- 3741US6873830B2Bias circuit and radio communication apparatus using sameSONY CORP·Filed 2001·Granted Mar 29, 2005·4 cites·10 claims
- 3841US4441084ANoise reduction circuitSONY CORP·Filed 1981·Granted Apr 3, 1984·5 cites·16 claims
- 3941US4112387ABias circuitTOKYO SHIBAURA ELECTRIC CO·Filed 1977·Granted Sep 5, 1978·4 cites·8 claims
- 4040US4866775AIntergrated multisound signal demodulator circuitSONY CORP·Filed 1988·Granted Sep 12, 1989·6 cites·7 claims
- 4139US11502647B2AmplifierSONY SEMICONDUCTOR SOLUTIONS CORP·Filed 2019·Granted Nov 15, 2022·0 cites·7 claims
- 4239US4084129AVoltage controlled variable gain circuitTOKYO SHIBAURA ELECTRIC CO·Filed 1977·Granted Apr 11, 1978·3 cites·3 claims
- 4338US5625321AVariable gain amplifier apparatusSONY CORP·Filed 1995·Granted Apr 29, 1997·7 cites·4 claims
- 4437US11165343B2Power supply circuit and power supply apparatusSONY SEMICONDUCTOR SOLUTIONS CORP·Filed 2018·Granted Nov 2, 2021·0 cites·7 claims
- 4536US4629995AVariable emphasis circuitSONY CORP·Filed 1985·Granted Dec 16, 1986·4 cites·6 claims
- 4633US5430336AEmitter coupled logic circuitSONY CORP·Filed 1993·Granted Jul 4, 1995·2 cites·6 claims
- 4733US4091295ATransistor circuitTOKYO SHIBAURA ELECTRIC CO·Filed 1976·Granted May 23, 1978·1 cites·6 claims
- 4832US5999049ADifferential amplifier circuit having non-linerity cancellation featureSONY CORP·Filed 1998·Granted Dec 7, 1999·2 cites·5 claims
- 4932US5999462AClock generation circuit for analog value memory circuitSONY CORP·Filed 1998·Granted Dec 7, 1999·1 cites·3 claims
- 5031US5185569APeak value detecting circuitSONY CORP·Filed 1991·Granted Feb 9, 1993·3 cites·6 claims
Showing the top 50 of 51 patent records by PatentIndex Score.
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