Inventor · disambiguated record
Katsuaki Ogawa
Also filed as: OGAWA KATSUAKI
18 granted patents·4 pending applications·138 citations·filing 1991–2019
93Inventor score
Top patents by PatentIndex Score
22 records- 0193US9506138B2Piston ringNIPPON PISTON RING CO LTD·Filed 2015·Granted Nov 29, 2016·5 cites·8 claims
- 0284US7493882B2Combination of a cylinder liner and a piston ringNIPPON PISTON RING CO LTD·Filed 2007·Granted Feb 24, 2009·13 cites·4 claims
- 0376US10428416B2Coating film, manufacturing method for same, and PVD deviceNIPPON ITF INC·Filed 2014·Granted Oct 1, 2019·3 cites·12 claims
- 0475US9759323B2Sliding member and method for producing sameNISSAN MOTOR·Filed 2013·Granted Sep 12, 2017·2 cites·8 claims
- 0570US8592050B2Piston ringOGAWA JUNPEI·Filed 2009·Granted Nov 26, 2013·3 cites·8 claims
- 0670US5531195APiston ringNIPPON PISTON RING CO LTD·Filed 1994·Granted Jul 2, 1996·30 cites·9 claims
- 0769US10451184B2Sliding member and method for producing sameNISSAN MOTOR·Filed 2017·Granted Oct 22, 2019·0 cites·8 claims
- 0868US6235415B1Sliding memberNIPPON PISTON RING CO LTD·Filed 2000·Granted May 22, 2001·11 cites·14 claims
- 0957US6631907B1Nitride-plated piston ring for internal combustion enginesNIPPON PISTON RING CO LTD·Filed 1995·Granted Oct 14, 2003·20 cites·4 claims
- 1055US11549408B2Iron-based sintered alloy valve seat for internal combustion engineNIPPON PISTON RING CO LTD·Filed 2019·Granted Jan 10, 2023·0 cites·10 claims
- 1155US6698763B2Piston ringNIPPON PISTON RING CO LTD·Filed 2002·Granted Mar 2, 2004·9 cites·10 claims
- 1253US2010319647A1Combination structure of piston ring and cylinder liner for internal combustion engineNIPPON PISTON RING CO LTD·Filed 2008·Application pending·0 cites
- 1352US2013328274A1Piston ringSUGIURA HIROYUKI·Filed 2012·Application pending·0 cites
- 1448US10457885B2Coating film, manufacturing method for same, and PVD deviceNIPPON ITF INC·Filed 2014·Granted Oct 29, 2019·0 cites·17 claims
- 1546US5124007AComposite plating bathNIPPON PISTON RING CO LTD·Filed 1991·Granted Jun 23, 1992·7 cites·8 claims
- 1645US6232003B1Sliding memberNIPPON PISTON RING CO LTD·Filed 1999·Granted May 15, 2001·11 cites·14 claims
- 1743US6139984ASliding memberNIPPON PISTON RING CO LTD·Filed 1999·Granted Oct 31, 2000·9 cites·12 claims
- 1839US6296951B1Laminated chromium plating layers having superior wear resistance and fatigue strengthNIPPON PISTON RING CO LTD·Filed 1999·Granted Oct 2, 2001·5 cites·5 claims
- 1938US6494461B1Sliding memberNIPPON PISTON RING CO LTD·Filed 1999·Granted Dec 17, 2002·7 cites·5 claims
- 2033US2013049305A1Internal combustion engine oil ringMIYAMOTO MAMORU·Filed 2011·Application pending·0 cites
- 2133US2002175476A1Piston ring, and combined structure of piston ring and ring groove of pistonNIPPON PISTON RING CO LTD·Filed 2002·Application pending·0 cites
- 2231US6315840B1Sliding memberNIPPON PISTON RING CO LTD·Filed 1999·Granted Nov 13, 2001·3 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →