Inventor · disambiguated record
Masao Kasuga
Also filed as: IWAHARA MAKOTO · IWASAKI YOSHIKI · KASUGA MASAO · SUZUKI FUJIO
69 granted patents·8 pending applications·1,481 citations·filing 1973–2018
99Inventor score
Top patents by PatentIndex Score
77 records- 0199US4472785ASampling frequency converterVICTOR COMPANY OF JAPAN·Filed 1981·Granted Sep 18, 1984·171 cites·5 claims
- 0295US6659978B1Portable dosing apparatusSEIKO INSTR INC·Filed 2000·Granted Dec 9, 2003·269 cites·29 claims
- 0391US4188504ASignal processing circuit for binaural signalsVICTOR COMPANY OF JAPAN·Filed 1978·Granted Feb 12, 1980·52 cites·6 claims
- 0490US6466913B1Method of determining a sound localization filter and a sound localization control system incorporating the filterRICOH KK·Filed 1999·Granted Oct 15, 2002·123 cites·11 claims
- 0590US6252333B1Stage utilizing ultrasonic motor and electronic equipment and printer utilizing the stageSEIKO INSTR INC·Filed 1999·Granted Jun 26, 2001·56 cites·29 claims
- 0688US6211603B1Ultrasonic motor and electronic apparatus with ultrasonic motorSEIKO INSTR INC·Filed 1998·Granted Apr 3, 2001·51 cites·23 claims
- 0786US6081063AUltrasonic motor and electronic apparatus having ultrasonic motorSEIKO INSTR INC·Filed 1998·Granted Jun 27, 2000·55 cites·24 claims
- 0884US4355304ADigital compandorKASUGA MASAO·Filed 1980·Granted Oct 19, 1982·39 cites·7 claims
- 0982US6218769B1Ultrasonic motor and electronic apparatus having ultrasonic motorSEIKO INSTR INC·Filed 1999·Granted Apr 17, 2001·40 cites·18 claims
- 1081US4521867AIIR digital filter having low coefficient sensitivityVICTOR COMPANY OF JAPAN·Filed 1982·Granted Jun 4, 1985·23 cites·8 claims
- 1180US7005776B1Ultrasonic motor and electronic apparatus equipped with ultrasonic motorSEIKO INSTR INC·Filed 1999·Granted Feb 28, 2006·37 cites·37 claims
- 1278US3932768ALimiting amplifierVICTOR COMPANY OF JAPAN·Filed 1974·Granted Jan 13, 1976·21 cites·15 claims
- 1377US6586860B1Ultrasonic motor and electronic device with ultrasonic motorSEIKO INSTR INC·Filed 2000·Granted Jul 1, 2003·20 cites·24 claims
- 1475US6396194B1Ultrasound motor and electronic apparatus equipped with ultrasonic motorSEIKO INSTR INC·Filed 1998·Granted May 28, 2002·27 cites·20 claims
- 1573US6984919B2Control system for ultrasonic motorSEIKO INSTR INC·Filed 2003·Granted Jan 10, 2006·17 cites·9 claims
- 1669US6707232B2Piezoelectric driving body, ultrasonic motor and electronic apparatus having an ultrasonic motorSEIKO INSTR INC·Filed 2001·Granted Mar 16, 2004·14 cites·33 claims
- 1769US5365139AElectronic apparatus with ultrasonic motorSEIKO INSTR INC·Filed 1993·Granted Nov 15, 1994·27 cites·8 claims
- 1869US4366471AVariable speed digital reproduction system using a digital low-pass filterVICTOR COMPANY OF JAPAN·Filed 1981·Granted Dec 28, 1982·14 cites·8 claims
- 1968US6404103B1Ultrasonic motor and electronic apparatus having ultrasonic motorSEIKO INSTR INC·Filed 2000·Granted Jun 11, 2002·14 cites·20 claims
- 2068US4542369ADigital-to-analog converting deviceVICTOR COMPANY OF JAPAN·Filed 1983·Granted Sep 17, 1985·17 cites·6 claims
- 2167US6765334B1Linear or pivotal motion mechanism using ultrasonic motor and electronic device equipped with linear or pivotal motion mechanismSEIKO INSTR INC·Filed 2000·Granted Jul 20, 2004·13 cites·7 claims
- 2266US4524422ADigital equalizer capable of varying the center frequency, quality factor, and gain to perform various frequency characteristicsVICTOR COMPANY OF JAPAN·Filed 1980·Granted Jun 18, 1985·16 cites·1 claims
- 2365US5079470AStanding-wave type ultrasonic motor and timepieceSEIKO INSTR INC·Filed 1990·Granted Jan 7, 1992·24 cites·31 claims
- 2465US4471381ASystem for converting number of scanning linesVICTOR COMPANY OF JAPAN·Filed 1982·Granted Sep 11, 1984·16 cites·13 claims
- 2564US6658178B2Optical communications equipmentSEIKO INSTR INC·Filed 2001·Granted Dec 2, 2003·9 cites·13 claims
- 2661US6917034B2Electronic equipment equipped with position detection means for detecting position of moving body utilizing incremental-type encoderSEIKO INSTR INC·Filed 2002·Granted Jul 12, 2005·9 cites·20 claims
- 2761US6570296B1Drive mechanism with ultrasonic motor and electronic device with ultrasonic motorSEIKO INSTR INC·Filed 2000·Granted May 27, 2003·9 cites·22 claims
- 2861US4321685ACircuit for reducing the limit cycle in a digital filterKASUGA MASAO·Filed 1979·Granted Mar 23, 1982·11 cites·8 claims
- 2959US7215062B1Ultrasonic motor and electronic appliance with ultrasonic motorSEIKO INSTR INC·Filed 1999·Granted May 8, 2007·17 cites·15 claims
- 3057US5592041AUltrasonic motor and electronic apparatus equipped with ultrasonic motorSEIKO INSTR INC·Filed 1994·Granted Jan 7, 1997·18 cites·20 claims
- 3157US5056201AMethod of making a travelling-wave motorSEIKO INSTR INC·Filed 1990·Granted Oct 15, 1991·15 cites·5 claims
- 3256US5619089AUltrasonic motor and electronic apparatus provided with an ultrasonic motorSEIKO INSTR INC·Filed 1996·Granted Apr 8, 1997·17 cites·23 claims
- 3355US6441534B2Ultrasonic motor and electronic apparatus equipped with ultrasonic motorSEIKO INSTR INC·Filed 2000·Granted Aug 27, 2002·7 cites·16 claims
- 3454US10547831B2Display device and display device frameSEMICONDUCTOR ENERGY LAB·Filed 2014·Granted Jan 28, 2020·0 cites·13 claims
- 3552US10644565B2Vibration generation device and electronic deviceSEIKO INSTR INC·Filed 2018·Granted May 5, 2020·0 cites·11 claims
- 3652US6359369B1Ultrasonic motor and electronic appliance having sameSEIKO INSTR INC·Filed 2000·Granted Mar 19, 2002·6 cites·23 claims
- 3752US5416374AUltrasonic motor and electronic apparatus equipped with ultrasonic motorSEIKO INSTR INC·Filed 1993·Granted May 16, 1995·16 cites·29 claims
- 3850US6952072B2Ultrasonic motor and electronic apparatus utilizing ultrasonic motorSEIKO INSTR INC·Filed 2002·Granted Oct 4, 2005·4 cites·30 claims
- 3950US6144140AUltrasonic motor and electronic device fitted with ultrasonic motorSEIKO INSTR INC·Filed 1998·Granted Nov 7, 2000·12 cites·31 claims
- 4050US6064138AUltrasonic wave motor device and electronic apparatus having ultrasonic wave motor deviceSEIKO INSTR INC·Filed 1998·Granted May 16, 2000·12 cites·29 claims
- 4150US4186281AMultichannel record disc reproducing apparatusVICTOR COMPANY OF JAPAN·Filed 1977·Granted Jan 29, 1980·8 cites·8 claims
- 4249US10827080B2Vibration generation device and electronic apparatusSEIKO INSTR INC·Filed 2017·Granted Nov 3, 2020·0 cites·8 claims
- 4349US6717330B2Ultrasonic motor and electronic device having the ultrasonic motorSEIKO INSTR INC·Filed 2002·Granted Apr 6, 2004·6 cites·9 claims
- 4449US5494543AProcess for producing vibrator for piezoelectric motorSEIKO INSTR INC·Filed 1993·Granted Feb 27, 1996·9 cites·16 claims
- 4546US10576501B2Vibration generation device and electronic apparatusSEIKO INSTR INC·Filed 2017·Granted Mar 3, 2020·0 cites·13 claims
- 4646US6771848B2Optical switch and method of controlling the sameSEIKO INSTR INC·Filed 2001·Granted Aug 3, 2004·1 cites·19 claims
- 4746US3991283AMultichannel record disc reproducing systemVICTOR COMPANY OF JAPAN·Filed 1975·Granted Nov 9, 1976·5 cites·11 claims
- 4845US6570294B1Ultrasonic motor and ultrasonic motor-equipped electronic applianceSEIKO INSTR INC·Filed 1999·Granted May 27, 2003·10 cites·24 claims
- 4945US6400063B2Ultrasonic motor and electronic apparatus having an ultrasonic motorSEIKO INSTR INC·Filed 2001·Granted Jun 4, 2002·2 cites·12 claims
- 5045US5780955AUltrasonic motor deviceSEIKO INSTR INC·Filed 1996·Granted Jul 14, 1998·11 cites·22 claims
Showing the top 50 of 77 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →