Inventor · disambiguated record
Tatsuo Kawaguchi
Also filed as: KAWAGUCHI TATSUO
56 granted patents·11 pending applications·445 citations·filing 1995–2025
98Inventor score
Files withNGK INSULATORS LTD62MATSUSHITA ELECTRIC INDUSTRIAL CO LTD2NEC CORP1SUZUKI YOSHIO1THE DOSHISHA1
Top patents by PatentIndex Score
67 records- 0193US6631231B2Optical waveguide elements, optical wavelength conversion elements, and process for producing optical waveguide elementsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Oct 7, 2003·57 cites·45 claims
- 0292US11353267B2Heat exchangerNGK INSULATORS LTD·Filed 2020·Granted Jun 7, 2022·3 cites·20 claims
- 0392US7372191B2Microswitch and method for manufacturing the sameNGK INSULATORS LTD·Filed 2005·Granted May 13, 2008·25 cites·9 claims
- 0491US10234209B2Heat exchangerNGK INSULATORS LTD·Filed 2015·Granted Mar 19, 2019·6 cites·5 claims
- 0591US9759157B2Heat/acoustic wave conversion unitNGK INSULATORS LTD·Filed 2015·Granted Sep 12, 2017·8 cites·15 claims
- 0691US9534856B2Heat exchangerSUZUKI YOSHIO·Filed 2012·Granted Jan 3, 2017·8 cites·11 claims
- 0788US11719489B2Heat exchangerNGK INSULATORS LTD·Filed 2020·Granted Aug 8, 2023·2 cites·6 claims
- 0888US11397052B2Heat exchangerNGK INSULATORS LTD·Filed 2020·Granted Jul 26, 2022·2 cites·7 claims
- 0987US11448465B2Heat exchangerNGK INSULATORS LTD·Filed 2020·Granted Sep 20, 2022·2 cites·10 claims
- 1085US10619947B2Heat exchangerNGK INSULATORS LTD·Filed 2017·Granted Apr 14, 2020·2 cites·12 claims
- 1182US7236674B2Optical waveguide device, coherent light source using the same and optical apparatus having the sameNGK INSULATORS LTD·Filed 2003·Granted Jun 26, 2007·17 cites·27 claims
- 1281US10494974B2Exhaust heat recovery deviceNGK INSULATORS LTD·Filed 2018·Granted Dec 3, 2019·2 cites·12 claims
- 1381US6363189B1Directional couplerNGK INSULATORS LTD·Filed 2000·Granted Mar 26, 2002·23 cites·23 claims
- 1478US10619938B2Heat exchange memberNGK INSULATORS LTD·Filed 2013·Granted Apr 14, 2020·2 cites·21 claims
- 1574US6353495B1Method for forming a ferroelectric domain-inverted structureMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Mar 5, 2002·44 cites·56 claims
- 1670US9739540B2Heat conduction memberNGK INSULATORS LTD·Filed 2013·Granted Aug 22, 2017·1 cites·15 claims
- 1769US7355327B2Laminated piezoelectric/electrostrictive elementNGK INSULATORS LTD·Filed 2006·Granted Apr 8, 2008·4 cites·10 claims
- 1868US12258893B2Heat exchange member, heat exchanger and heat conductive memberNGK INSULATORS LTD·Filed 2021·Granted Mar 25, 2025·0 cites·19 claims
- 1968US7171094B2Optical waveguide device, optical waveguide laser using the same and optical apparatus equipped with the sameNGK INSULATORS LTD·Filed 2003·Granted Jan 30, 2007·10 cites·15 claims
- 2068US6794723B2Matrix type piezoelectric/electrostrictive device and manufacturing method thereofNGK INSULATORS LTD·Filed 2002·Granted Sep 21, 2004·5 cites·13 claims
- 2167US7161281B2Less-dust-generative piezoelectric/electrostrictive device and manufacturing methodNGK INSULATORS LTD·Filed 2003·Granted Jan 9, 2007·10 cites·14 claims
- 2266US11920874B2Heat exchange member, heat exchanger and heat conductive memberNGK INSULATORS LTD·Filed 2021·Granted Mar 5, 2024·0 cites·9 claims
- 2365US6731422B2Method for forming a polarization-inversed portionNGK INSULATORS LTD·Filed 2001·Granted May 4, 2004·10 cites·12 claims
- 2465US5943465AOptical waveguide element, optical element, method for producing optical waveguide element and method for producing periodic domain-inverted structureNGK INSULATORS LTD·Filed 1997·Granted Aug 24, 1999·32 cites·11 claims
- 2564US6824897B2Method for producing bonded articles, bonded articles and bonding agentsNGK INSULATORS LTD·Filed 2001·Granted Nov 30, 2004·4 cites·10 claims
- 2664US2025354729A1EvaporatorNGK INSULATORS LTD·Filed 2025·Application pending·0 cites
- 2761US6074477AProcess and an apparatus for producing a composite oxide single crystal bodyNGK INSULATORS LTD·Filed 1998·Granted Jun 13, 2000·20 cites·27 claims
- 2860US5866200AProcess for producing optical waveguide-provided substrateNGK INSULATORS LTD·Filed 1997·Granted Feb 2, 1999·23 cites·10 claims
- 2959US11079182B2Heat exchangerNGK INSULATORS LTD·Filed 2019·Granted Aug 3, 2021·0 cites·18 claims
- 3059US7087294B2Bonding body and method of producing the sameNGK INSULATORS LTD·Filed 2002·Granted Aug 8, 2006·1 cites·9 claims
- 3157US11859916B2Flow path member for heat exchanger, and heat exchangerNGK INSULATORS LTD·Filed 2021·Granted Jan 2, 2024·0 cites·11 claims
- 3257US10527369B2Heat exchanger element, manufacturing method therefor, and heat exchangerNGK INSULATORS LTD·Filed 2013·Granted Jan 7, 2020·0 cites·16 claims
- 3356US11555661B2Heat exchanging member and heat exchangerNGK INSULATORS LTD·Filed 2018·Granted Jan 17, 2023·0 cites·9 claims
- 3456US2024263893A1Heat exchangerNGK INSULATORS LTD·Filed 2024·Application pending·0 cites
- 3556US2024200884A1Heat exchangerNGK INSULATORS LTD·Filed 2023·Application pending·0 cites
- 3655US11644252B2Flow path structure of heat exchanger, and heat exchangerNGK INSULATORS LTD·Filed 2020·Granted May 9, 2023·0 cites·10 claims
- 3755US2023302524A1Method for producing heat conductive member and heat exchangerNGK INSULATORS LTD·Filed 2023·Application pending·0 cites
- 3855US2024151311A1Butterfly valve and heat exhangerNGK INSULATORS LTD·Filed 2023·Application pending·0 cites
- 3954US11629626B2Heat recovery device and heat recovery systemNGK INSULATORS LTD·Filed 2021·Granted Apr 18, 2023·0 cites·12 claims
- 4054US11243031B2Heat exchanger and method for producing sameNGK INSULATORS LTD·Filed 2020·Granted Feb 8, 2022·0 cites·9 claims
- 4153US7192799B2Matrix type piezoelectric/electrostrictive device and manufacturing method thereofNGK INSULATORS LTD·Filed 2004·Granted Mar 20, 2007·3 cites·13 claims
- 4253US2014020877A1Heat exchanger element and heat exchangerNGK INSULATORS LTD·Filed 2013·Application pending·0 cites
- 4352US7342349B2Piezoelectric actuator array and manufacturing methodNGK INSULATORS LTD·Filed 2003·Granted Mar 11, 2008·3 cites·12 claims
- 4452US2022390181A1Heat exchangerNGK INSULATORS LTD·Filed 2022·Application pending·0 cites
- 4552US2022333871A1Heat exchangerNGK INSULATORS LTD·Filed 2022·Application pending·0 cites
- 4650US10837342B2Heat exchange componentNGK INSULATORS LTD·Filed 2017·Granted Nov 17, 2020·0 cites·8 claims
- 4750US5985022AOptoelectric articles and a process for producing the sameNGK INSULATORS LTD·Filed 1997·Granted Nov 16, 1999·8 cites·13 claims
- 4850US2020013535A1Transformer oil, transformer oil evaluation method, and transformer oil evaluation apparatusTHE DOSHISHA·Filed 2018·Application pending·0 cites
- 4949US11242791B2Heat recovery device and heat recovery system with a thermoelectric moduleNGK INSULATORS LTD·Filed 2019·Granted Feb 8, 2022·0 cites·19 claims
- 5049US5650006AProcess for producing a lithium niobate-lithium tantalate single crystal substrateNGK INSULATORS LTD·Filed 1995·Granted Jul 22, 1997·9 cites·5 claims
Showing the top 50 of 67 patent records by PatentIndex Score.
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