Inventor · disambiguated record
Katsutoshi Nakayama
Also filed as: NAKAYAMA KATSUTOSHI
42 granted patents·1 pending application·156 citations·filing 1997–2014
97Inventor score
Files withNGK SPARK PLUG CO16KATSURAYA KOHEI8NAKAYAMA KATSUTOSHI5SAKAYANAGI NOBUAKI4KAMEDA HIROYUKI2
Top patents by PatentIndex Score
43 records- 0190US8212463B2Spark plug and its manufacturing methodSAKAYANAGI NOBUAKI·Filed 2011·Granted Jul 3, 2012·8 cites·10 claims
- 0287US8354782B2Spark plugNGK SPARK PLUG CO·Filed 2010·Granted Jan 15, 2013·6 cites·8 claims
- 0387US7150252B2Spark plug and internal combustion engine equipped with the spark plugNGK SPARK PLUG CO·Filed 2006·Granted Dec 19, 2006·14 cites·8 claims
- 0486US8487520B2Spark plug and method of manufacturing the sameSAKAYANAGI NOBUAKI·Filed 2010·Granted Jul 16, 2013·6 cites·12 claims
- 0585US8013504B2Spark plug for internal combustion engine and method for producing the spark plugNGK SPARK PLUG CO·Filed 2008·Granted Sep 6, 2011·9 cites·21 claims
- 0684US9263857B2Ignition systemNGK SPARK PLUG CO·Filed 2013·Granted Feb 16, 2016·5 cites·10 claims
- 0784US8841828B2Spark plugIGARASHI TOMOYUKI·Filed 2012·Granted Sep 23, 2014·8 cites·7 claims
- 0883US9035562B2Ignition plug and ignition apparatusKATSURAYA KOHEI·Filed 2012·Granted May 19, 2015·4 cites·10 claims
- 0978US8188641B2Spark plugKAMEDA HIROYUKI·Filed 2008·Granted May 29, 2012·6 cites·2 claims
- 1077US9306374B2Spark plugNGK SPARK PLUG CO·Filed 2013·Granted Apr 5, 2016·3 cites·11 claims
- 1177US9169820B2Ignition systemYAMADA TATSUNORI·Filed 2012·Granted Oct 27, 2015·4 cites·19 claims
- 1276US8907552B2High-frequency plasma spark plugNGK SPARK PLUG CO·Filed 2012·Granted Dec 9, 2014·5 cites·7 claims
- 1376US8841827B2Spark plug with improved resistance to spark-induced erosion of the ground electrode tipSAKAYANAGI NOBUAKI·Filed 2011·Granted Sep 23, 2014·3 cites·15 claims
- 1476US8264131B2Spark plugSAKAYANAGI NOBUAKI·Filed 2010·Granted Sep 11, 2012·3 cites·10 claims
- 1576US8013503B2Spark plug for internal combustion engine having ground electrode with thick, thin and stepped portion and method for producing the spark plugNGK SPARK PLUG CO·Filed 2008·Granted Sep 6, 2011·5 cites·14 claims
- 1673US9246313B2Ignition systemNGK SPARK PLUG CO·Filed 2013·Granted Jan 26, 2016·2 cites·10 claims
- 1770US9316199B2Ignition device and structure for mounting sameYAMADA TATSUNORI·Filed 2011·Granted Apr 19, 2016·2 cites·13 claims
- 1870US7825572B2Spark plugNGK SPARK PLUG CO·Filed 2007·Granted Nov 2, 2010·4 cites·10 claims
- 1970US5797383ADual polarity type ignition system for a spark plug groupNGK SPARK PLUG CO·Filed 1997·Granted Aug 25, 1998·20 cites·8 claims
- 2069US7781949B2Spark plugNGK SPARK PLUG CO·Filed 2007·Granted Aug 24, 2010·4 cites·6 claims
- 2166US7906894B2Spark plug for internal combustion engineNGK SPARK PLUG CO·Filed 2008·Granted Mar 15, 2011·3 cites·5 claims
- 2265US7703428B2Spark plug and internal combustion engine in which the spark plug is disposedNGK SPARK PLUG CO·Filed 2008·Granted Apr 27, 2010·3 cites·7 claims
- 2364US6436645B1Method for predicting risk of developing chronic pulmonary emphysemaUNIV TOHOKU·Filed 2000·Granted Aug 20, 2002·2 cites·2 claims
- 2461US8471448B2High-frequency plasma spark plugKATSURAYA KOHEI·Filed 2011·Granted Jun 25, 2013·1 cites·15 claims
- 2561US8410175B2Anticancer effect enhancerYASUDA HIROYASU·Filed 2008·Granted Apr 2, 2013·1 cites·5 claims
- 2660US8102106B2Spark plug and method of manufacturing the sameKATSURAYA KOHEI·Filed 2009·Granted Jan 24, 2012·2 cites·6 claims
- 2759US8247740B2Spark plug, and its manufacturing methodNAKAYAMA KATSUTOSHI·Filed 2008·Granted Aug 21, 2012·2 cites·11 claims
- 2859US8222803B2Spark plug and manufacturing method thereofKATSURAYA KOHEI·Filed 2009·Granted Jul 17, 2012·2 cites·8 claims
- 2953US9016253B2Spark plug for internal combustion engineKISHIMOTO KAORI·Filed 2008·Granted Apr 28, 2015·2 cites·15 claims
- 3053US7821186B2Spark plug having specific configuration of center electrode with respect to outer electrodeNGK SPARK PLUG CO·Filed 2008·Granted Oct 26, 2010·1 cites·8 claims
- 3152US8640666B2Spark plug for internal combustion engineKAMEDA HIROYUKI·Filed 2008·Granted Feb 4, 2014·1 cites·15 claims
- 3249US9231382B2Plasma ignition device and plasma ignition methodKATSURAYA KOHEI·Filed 2011·Granted Jan 5, 2016·0 cites·18 claims
- 3345US8466608B2Spark plug and manufacturing method thereofNAKAYAMA KATSUTOSHI·Filed 2009·Granted Jun 18, 2013·0 cites·8 claims
- 3444US8298030B2Spark plug manufacturing method, and spark plugNAKAYAMA KATSUTOSHI·Filed 2008·Granted Oct 30, 2012·0 cites·10 claims
- 3542US9368942B2Ignition plug and ignition systemNGK SPARK PLUG CO·Filed 2014·Granted Jun 14, 2016·0 cites·8 claims
- 3642US8976504B2Ignition system and spark plugKATSURAYA KOHEI·Filed 2011·Granted Mar 10, 2015·0 cites·14 claims
- 3742US8946977B2Spark plug having fusion zoneKATSURAYA KOHEI·Filed 2012·Granted Feb 3, 2015·0 cites·11 claims
- 3840US8928212B2Spark plugNGK SPARK PLUG CO·Filed 2014·Granted Jan 6, 2015·0 cites·6 claims
- 3939US6654945B1Storage medium in which data for designing an integrated circuit is stored and method of fabricating an integrated circuitHITACHI LTD·Filed 1999·Granted Nov 25, 2003·15 cites·25 claims
- 4038US2008039521A1Anticancer Effect EnhancerYASUDA HIROYASU·Filed 2005·Application pending·0 cites
- 4137US8624473B2Spark plugNAKAYAMA KATSUTOSHI·Filed 2010·Granted Jan 7, 2014·0 cites·21 claims
- 4236US8629605B2Spark plug having shaped insulatorKATSURAYA KOHEI·Filed 2010·Granted Jan 14, 2014·0 cites·13 claims
- 4332US8506341B2Method of manufacturing sparkplugsNAKAYAMA KATSUTOSHI·Filed 2010·Granted Aug 13, 2013·0 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →