Inventor · disambiguated record
Tsutomu Yamaguchi
Also filed as: YAMAGUCHI TSUTOMU
72 granted patents·24 pending applications·1,023 citations·filing 1981–2024
99Inventor score
Files withSANYO ELECTRIC CO29KK KAWAI GAKKI SEISAKUSHO16MITSUBISHI ELECTRIC CORP15KAWAI MUSICAL INSTR MFG CO13TODA TADAO5
Top patents by PatentIndex Score
96 records- 0197US12136403B2Keyboard device for keyboard instrumentKK KAWAI GAKKI SEISAKUSHO·Filed 2022·Granted Nov 5, 2024·4 cites·10 claims
- 0296US7941196B2Waterproof structureCASIO HITACHI MOBILE COMM CO·Filed 2007·Granted May 10, 2011·110 cites·15 claims
- 0393US12223934B2Keyboard device for keyboard instrumentKK KAWAI GAKKI SEISAKUSHO·Filed 2022·Granted Feb 11, 2025·2 cites·21 claims
- 0492US6975604B1Base station controller and mobile stationHITACHI LTD·Filed 2000·Granted Dec 13, 2005·117 cites·24 claims
- 0591US6218890B1Switching circuit device and semiconductor deviceSANYO ELECTRIC CO·Filed 1999·Granted Apr 17, 2001·97 cites·20 claims
- 0688US6791120B2Nitride-based semiconductor device and method of fabricating the sameSANYO ELECTRIC CO·Filed 2003·Granted Sep 14, 2004·28 cites·14 claims
- 0788US6649942B2Nitride-based semiconductor light-emitting deviceSANYO ELECTRIC CO·Filed 2002·Granted Nov 18, 2003·68 cites·26 claims
- 0888US4551729AMethod of making thermal transfer type multicolor printingSHINKO ELECTRIC CO LTD·Filed 1983·Granted Nov 5, 1985·42 cites·4 claims
- 0984US5467116AInk jet printer with device for aligning an ink cartridgeTOKYO ELECTRIC CO LTD·Filed 1993·Granted Nov 14, 1995·50 cites·18 claims
- 1079US6577880B1Radio communication method and radio communication systemHITACHI LTD·Filed 2000·Granted Jun 10, 2003·33 cites·15 claims
- 1179US5610352AMechanism for rotatably supporting rotary member of keyboardKAWAI MUSICAL INSTR MFG CO·Filed 1994·Granted Mar 11, 1997·32 cites·12 claims
- 1279US5210411ADetection mark and method and apparatus for detecting markHITACHI MAXELL·Filed 1991·Granted May 11, 1993·67 cites·8 claims
- 1378US7514613B2Keyboard device for keyboard instrumentKAWAI MUSICAL INSTR MFG CO·Filed 2005·Granted Apr 7, 2009·8 cites·13 claims
- 1478US7279344B2Method of forming a nitride-based semiconductorSANYO ELECTRIC CO·Filed 2006·Granted Oct 9, 2007·4 cites·5 claims
- 1577US7767891B2Key for keyboard-based musical instrumentsKAWAI MUSICAL INSTR MFG CO·Filed 2005·Granted Aug 3, 2010·7 cites·4 claims
- 1676US7732686B2Stopper for keyboard-based musical instrumentsKAWAI MUSICAL INSTR MFG CO·Filed 2005·Granted Jun 8, 2010·10 cites·6 claims
- 1772US12412554B2Key guide structure for keyboard instrumentKK KAWAI GAKKI SEISAKUSHO·Filed 2023·Granted Sep 9, 2025·0 cites·3 claims
- 1872US12154531B2Key for keyboard deviceKK KAWAI GAKKI SEISAKUSHO·Filed 2023·Granted Nov 26, 2024·0 cites·2 claims
- 1972US7260132B2Semiconductor laser apparatusMITSUBISHI ELECTRIC CORP·Filed 2006·Granted Aug 21, 2007·2 cites·14 claims
- 2071US7773654B2Semiconductor laser apparatus and fabrication method thereofSANYO ELECTRIC CO·Filed 2005·Granted Aug 10, 2010·5 cites·17 claims
- 2171US5189081APenetrable, epoxy resin composition comprising glycidyl ether of bisphenol modified with glycol or urethane, and inorganic fillerSOMAR CORP·Filed 1991·Granted Feb 23, 1993·19 cites·1 claims
- 2271US2025111839A1Keyboard device for keyboard instrumentKK KAWAI GAKKI SEISAKUSHO·Filed 2024·Application pending·0 cites
- 2371US2025104675A1Keyboard device for keyboard instrumentKK KAWAI GAKKI SEISAKUSHO·Filed 2024·Application pending·0 cites
- 2470US7372077B2Semiconductor deviceSANYO ELECTRIC CO·Filed 2004·Granted May 13, 2008·9 cites·24 claims
- 2570US6759139B2Nitride-based semiconductor element and method of forming nitride-based semiconductorSANYO ELECTRIC CO·Filed 2002·Granted Jul 6, 2004·13 cites·23 claims
- 2670US5243125AKeyboard apparatus for electronic musical instrument having cooperating jacks and hammersKAWAI MUSICAL INSTR MFG CO·Filed 1992·Granted Sep 7, 1993·23 cites·4 claims
- 2770US5079985AKeyboard apparatus for electronic keyboard musical instrumentKAWAI MUSICAL INSTR MFG CO·Filed 1990·Granted Jan 14, 1992·23 cites·9 claims
- 2870US5036743AKeyboard device for electronic musical instrumentKAWAI MUSICAL INSTR MFG CO·Filed 1989·Granted Aug 6, 1991·26 cites·3 claims
- 2969US7512167B2Integrated semiconductor laser device and method of fabricating the sameSANYO ELECTRIC CO·Filed 2005·Granted Mar 31, 2009·3 cites·13 claims
- 3068US7405096B2Manufacturing method of nitride semiconductor device and nitride semiconductor deviceSANYO ELECTRIC CO·Filed 2005·Granted Jul 29, 2008·2 cites·25 claims
- 3168US6890779B2Nitride-based semiconductor device and method of fabricating the sameSANYO ELECTRIC CO·Filed 2004·Granted May 10, 2005·7 cites·19 claims
- 3268US6849796B2Operation detection switch, musical instrument and parameter determination programKAWAI MUSICAL INSTR MFG CO·Filed 2003·Granted Feb 1, 2005·14 cites·20 claims
- 3367US12205568B2Keyboard device for keyboard instrumentKK KAWAI GAKKI SEISAKUSHO·Filed 2022·Granted Jan 21, 2025·0 cites·10 claims
- 3467US7602830B2Monolithic semiconductor laser and method of manufacturing the sameMITSUBISHI ELECTRIC CORP·Filed 2007·Granted Oct 13, 2009·2 cites·9 claims
- 3567US7567605B2Semiconductor laser device and method of fabricating the sameSANYO ELECTRIC CO·Filed 2006·Granted Jul 28, 2009·3 cites·17 claims
- 3667US6743702B2Nitride-based semiconductor laser device and method of forming the sameSANYO ELECTRIC CO·Filed 2002·Granted Jun 1, 2004·13 cites·38 claims
- 3767US2024112660A1Keyboard device for keyboard instrumentKK KAWAI GAKKI SEISAKUSHO·Filed 2023·Application pending·0 cites
- 3866US12190853B2Keyboard device for keyboard instrumentKK KAWAI GAKKI SEISAKUSHO·Filed 2023·Granted Jan 7, 2025·0 cites·4 claims
- 3966US7589357B2Semiconductor device and method of fabricating the sameSANYO ELECTRIC CO·Filed 2007·Granted Sep 15, 2009·1 cites·3 claims
- 4065US4367285AAssaying lipid peroxide in lipid compositionsTOYO JOZO KK·Filed 1981·Granted Jan 4, 1983·19 cites·5 claims
- 4164US5930695ARadio receiver with amplitude limiter prior to mixer and band limiting filterHITACHI LTD·Filed 1995·Granted Jul 27, 1999·27 cites·12 claims
- 4264US2023317040A1Keyboard device for keyboard instrumentKK KAWAI GAKKI SEISAKUSHO·Filed 2023·Application pending·0 cites
- 4364US2023317039A1Keyboard device for keyboard instrumentKK KAWAI GAKKI SEISAKUSHO·Filed 2023·Application pending·0 cites
- 4463US2025111838A1Keyboard device for keyboard instrumentKK KAWAI GAKKI SEISAKUSHO·Filed 2024·Application pending·0 cites
- 4563US2025104676A1Key weight and key for keyboard instrumentKK KAWAI GAKKI SEISAKUSHO·Filed 2024·Application pending·0 cites
- 4662US2023101297A1Keyboard device for keyboard instrumentKK KAWAI GAKKI SEISAKUSHO·Filed 2022·Application pending·0 cites
- 4762US2023098045A1Key for keyboard deviceKK KAWAI GAKKI SEISAKUSHO·Filed 2022·Application pending·0 cites
- 4862US2023100217A1Keyboard device for keyboard instrumentKK KAWAI GAKKI SEISAKUSHO·Filed 2022·Application pending·0 cites
- 4961US7109530B2Nitride-based semiconductor elementSANYO ELECTRIC CO·Filed 2004·Granted Sep 19, 2006·5 cites·5 claims
- 5061US2015027532A1Solar cell, solar cell module and method of manufacturing solar cellSANYO ELECTRIC CO·Filed 2014·Application pending·0 cites
Showing the top 50 of 96 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →