Assignee
TOKYO ROKI KK
JP·23 granted patents·10 pending applications·352 citations·filing 1984–2021
Top patents by PatentIndex Score
33 records- 0186US4673503AVariant length pleated filter elementTOKYO ROKI KK·Filed 1985·Granted Jun 16, 1987·92 cites·4 claims
- 0285US7597865B2Nitrogen oxide removal catalyst system and nitrogen oxide removal methodTOKYO ROKI KK·Filed 2005·Granted Oct 6, 2009·12 cites·10 claims
- 0385US6835237B2Air cleanerTOKYO ROKI KK·Filed 2002·Granted Dec 28, 2004·44 cites·6 claims
- 0481US7562521B2SCR mufflerTOKYO ROKI KK·Filed 2005·Granted Jul 21, 2009·13 cites·1 claims
- 0579US10519827B2Oil mist filter and oil separatorTOKYO ROKI KK·Filed 2015·Granted Dec 31, 2019·2 cites·7 claims
- 0677US5525307AExhaust gas purifying catalyst for use in an internal combustion engineTOKYO ROKI KK·Filed 1994·Granted Jun 11, 1996·46 cites·17 claims
- 0775US5332554AExhaust purifying catalyst for use in an internal combustion engine and method of manufacturing sameTOKYO ROKI KK·Filed 1992·Granted Jul 26, 1994·41 cites·17 claims
- 0869US10322362B2Oil separatorTOKYO ROKI KK·Filed 2014·Granted Jun 18, 2019·2 cites·4 claims
- 0969US5208206AMethod of manufacturing an exhaust gas purifying catalystTOKYO ROKI KK·Filed 1991·Granted May 4, 1993·30 cites·14 claims
- 1068US9677507B2Oil separatorTOKYO ROKI KK·Filed 2012·Granted Jun 13, 2017·3 cites·5 claims
- 1167US4631076AApparatus for removing carbon particles from exhaust gas from internal combustion engineTOKYO ROKI KK·Filed 1984·Granted Dec 23, 1986·34 cites·1 claims
- 1264US10767605B2Heat exchangerTOKYO ROKI KK·Filed 2016·Granted Sep 8, 2020·1 cites·4 claims
- 1364US4655921AFilter elementTOKYO ROKI KK·Filed 1985·Granted Apr 7, 1987·32 cites·9 claims
- 1458US11401850B2Exhaust gas purification catalystTOKYO ROKI KK·Filed 2019·Granted Aug 2, 2022·0 cites·5 claims
- 1554US2011185710A1Exhaust gas purifying device for internal combustion engine, and swirl generating deviceTOKYO ROKI KK·Filed 2009·Application pending·0 cites
- 1649US12312988B2Exhaust purification apparatusTOKYO ROKI KK·Filed 2021·Granted May 27, 2025·0 cites·6 claims
- 1749US2021207515A1Exhaust gas purification catalystTOKYO ROKI KK·Filed 2019·Application pending·0 cites
- 1849US2017001133A1Oil separatorTOKYO ROKI KK·Filed 2014·Application pending·0 cites
- 1948US10953410B2Separation disk and oil separatorTOKYO ROKI KK·Filed 2015·Granted Mar 23, 2021·0 cites·9 claims
- 2046US10512864B2Oil separatorTOKYO ROKI KK·Filed 2014·Granted Dec 24, 2019·0 cites·5 claims
- 2146US10226725B2Oil mist separation method and oil separatorTOKYO ROKI KK·Filed 2014·Granted Mar 12, 2019·0 cites·6 claims
- 2246US9987579B2Oil separatorTOKYO ROKI KK·Filed 2013·Granted Jun 5, 2018·0 cites·9 claims
- 2345US10569206B2Oil separatorTOKYO ROKI KK·Filed 2014·Granted Feb 25, 2020·0 cites·7 claims
- 2445US2020191036A1Exhaust gas treatment system and exhaust gas purification methodTOKYO ROKI KK·Filed 2019·Application pending·0 cites
- 2545US2007227108A1Hydrocarbon filter, frame for fixing hydrocarbon filter, and air cleanerTOKYO ROKI KK·Filed 2007·Application pending·0 cites
- 2644US10513955B2Oil separatorTOKYO ROKI KK·Filed 2015·Granted Dec 24, 2019·0 cites·10 claims
- 2743US2016375387A1Oil separatorTOKYO ROKI KK·Filed 2014·Application pending·0 cites
- 2842US12116921B2Mixing deviceTOKYO ROKI KK·Filed 2020·Granted Oct 15, 2024·0 cites·4 claims
- 2939US2019316501A1Stack of separation disksTOKYO ROKI KK·Filed 2016·Application pending·0 cites
- 3038US2025027724A1Heat exchangerTOKYO ROKI KK·Filed 2021·Application pending·0 cites
- 3138US2020325807A1Oil separatorTOKYO ROKI KK·Filed 2016·Application pending·0 cites
- 3238US2019091618A1Oil separatorTOKYO ROKI KK·Filed 2016·Application pending·0 cites
- 3335US10913076B2Oil separatorTOKYO ROKI KK·Filed 2015·Granted Feb 9, 2021·0 cites·11 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →