Inventor · disambiguated record
Toshihiro Hirakawa
Also filed as: HIRAKAWA TOSHIHIRO
29 granted patents·9 pending applications·69 citations·filing 2005–2023
94Inventor score
Top patents by PatentIndex Score
38 records- 0196US9700842B2Honeycomb filterNGK INSULATORS LTD·Filed 2015·Granted Jul 11, 2017·13 cites·14 claims
- 0293US9803596B2Honeycomb filterNGK INSULATORS LTD·Filed 2015·Granted Oct 31, 2017·6 cites·11 claims
- 0391US9289711B2Plugged honeycomb structureNGK INSULATORS LTD·Filed 2013·Granted Mar 22, 2016·13 cites·17 claims
- 0491US9080479B2Filter elementNGK INSULATORS LTD·Filed 2013·Granted Jul 14, 2015·11 cites·5 claims
- 0584US11879864B2Metal terminalNGK INSULATORS LTD·Filed 2020·Granted Jan 23, 2024·1 cites·10 claims
- 0684US9987582B2Plugged honeycomb structure and plugged honeycomb segmentNGK INSULATORS LTD·Filed 2016·Granted Jun 5, 2018·3 cites·14 claims
- 0780US10118121B2Plugged honeycomb structure and plugged honeycomb segmentNGK INSULATORS LTD·Filed 2016·Granted Nov 6, 2018·2 cites·8 claims
- 0877US12467894B2Gas sensorNGK INSULATORS LTD·Filed 2023·Granted Nov 11, 2025·0 cites·6 claims
- 0973US7429416B2Honeycomb structureNGK INSULATORS LTD·Filed 2007·Granted Sep 30, 2008·3 cites·6 claims
- 1071US10024209B2Exhaust gas purification filter, exhaust gas purifier, and method of using exhaust gas purifierNGK INSULATORS LTD·Filed 2016·Granted Jul 17, 2018·1 cites·15 claims
- 1170US7572497B2Honeycomb structureNKG INSULATORS LTD·Filed 2007·Granted Aug 11, 2009·4 cites·5 claims
- 1269US10232300B2Plugged honeycomb structureNGK INSULATORS LTD·Filed 2016·Granted Mar 19, 2019·1 cites·12 claims
- 1367US9205363B2Dust collecting honeycomb filterNGK INSULATORS LTD·Filed 2014·Granted Dec 8, 2015·1 cites·15 claims
- 1467US8511659B2Holding jig, measurement device and holding device using the sameHIRAKAWA TOSHIHIRO·Filed 2010·Granted Aug 20, 2013·5 cites·8 claims
- 1565US8911849B2Honeycomb structureNGK INSULATORS LTD·Filed 2013·Granted Dec 16, 2014·2 cites·4 claims
- 1665US7488367B2Honeycomb filter and method of manufacturing the sameNGK INSULATORS LTD·Filed 2005·Granted Feb 10, 2009·2 cites·3 claims
- 1762US2022113277A1Gas sensorNGK INSULATORS LTD·Filed 2021·Application pending·0 cites
- 1861US12153011B2Gas sensorNGK INSULATORS LTD·Filed 2022·Granted Nov 26, 2024·0 cites·4 claims
- 1961US2023243775A1Gas sensor elementNGK INSULATORS LTD·Filed 2023·Application pending·0 cites
- 2060US11656151B2SensorNGK INSULATORS LTD·Filed 2022·Granted May 23, 2023·0 cites·9 claims
- 2160US11585781B2Gas sensorNGK INSULATORS LTD·Filed 2020·Granted Feb 21, 2023·0 cites·3 claims
- 2260US11573197B2Gas sensor with angled sealing elementNGK INSULATORS LTD·Filed 2021·Granted Feb 7, 2023·0 cites·8 claims
- 2359US12461057B2Gas sensor elementNGK INSULATORS LTD·Filed 2022·Granted Nov 4, 2025·0 cites·12 claims
- 2459US11609206B2Gas sensorNGK INSULATORS LTD·Filed 2020·Granted Mar 21, 2023·0 cites·2 claims
- 2558US11815485B2Gas sensorNGK INSULATORS LTD·Filed 2020·Granted Nov 14, 2023·0 cites·10 claims
- 2658US2023314363A1Sensor element and gas sensorNGK INSULATORS LTD·Filed 2023·Application pending·0 cites
- 2757US2022317083A1Gas sensorNGK INSULATORS LTD·Filed 2022·Application pending·0 cites
- 2857US2022308011A1Sensor elementNGK INSULATORS LTD·Filed 2022·Application pending·0 cites
- 2956US12429454B2Gas sensorNGK INSULATORS LTD·Filed 2021·Granted Sep 30, 2025·0 cites·9 claims
- 3056US11604161B2Gas sensorNGK INSULATORS LTD·Filed 2020·Granted Mar 14, 2023·0 cites·3 claims
- 3155US2023112530A1Gas sensor elementNGK INSULATORS LTD·Filed 2022·Application pending·0 cites
- 3253US10710324B2Manufacturing method of honeycomb structure forming die, and honeycomb structure forming dieNGK INSULATORS LTD·Filed 2017·Granted Jul 14, 2020·0 cites·4 claims
- 3353US2022113278A1Gas sensorNGK INSULATORS LTD·Filed 2021·Application pending·0 cites
- 3446US10632709B2Honeycomb structureNGK INSULATORS LTD·Filed 2017·Granted Apr 28, 2020·0 cites·8 claims
- 3546US2021096117A1Gas sensorNGK INSULATORS LTD·Filed 2020·Application pending·0 cites
- 3642US10696010B2Plugged honeycomb structure and plugged honeycomb segmentNGK INSULATORS LTD·Filed 2016·Granted Jun 30, 2020·0 cites·4 claims
- 3736US2015240679A1Honeycomb structureNGK INSULATORS LTD·Filed 2015·Application pending·0 cites
- 3824USD763428SFilter for removing particle matterNGK INSULATORS LTD·Filed 2015·Granted Aug 9, 2016·1 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →