Inventor · disambiguated record
Kazumasa Yoshida
Also filed as: YOSHIDA KAZUMASA
27 granted patents·314 citations·filing 1979–2019
96Inventor score
Files withNGK SPARK PLUG CO10NORITAKE CO LTD4PANASONIC IP MAN CO LTD2TOSHIBA BATTERY2JAPAN GORE TEX INC1
Top patents by PatentIndex Score
27 records- 0187US8974739B2Method for producing porous film or tape of expanded polytetrafluoroethylene supporting catalyst particles, and ozone-removing filterYOSHIDA KAZUMASA·Filed 2010·Granted Mar 10, 2015·7 cites·8 claims
- 0287US6095124ASpark plug and an internal combustion engine igniting system using the sameNGK SPARK PLUG CO·Filed 1998·Granted Aug 1, 2000·44 cites·20 claims
- 0386US5929556ASpark plug with center electrode having variable diameter portion retracted from front end on insulatorNGK SPARK PLUG CO·Filed 1996·Granted Jul 27, 1999·42 cites·19 claims
- 0481US6091185ALateral electrode type spark plug with geometrical relationships with ground electrodeNGK SPARK PLUG CO·Filed 1998·Granted Jul 18, 2000·33 cites·10 claims
- 0575US6225752B1Spark plug for internal combustion engineNGK SPARK PLUG CO·Filed 2000·Granted May 1, 2001·19 cites·8 claims
- 0675US4500614AAlkaline cellTOSHIBA BATTERY·Filed 1983·Granted Feb 19, 1985·33 cites·3 claims
- 0773US8072125B2Spark plug for use in an internal-combustion engine with a bilayer ground electrodeTORII KAZUYOSHI·Filed 2007·Granted Dec 6, 2011·5 cites·8 claims
- 0869US4380576AAir cellTOSHIBA BATTERY·Filed 1981·Granted Apr 19, 1983·25 cites·5 claims
- 0968US8120235B2Spark plug for internal combustion engine and method for manufacturing spark plugNUNOME KENJI·Filed 2008·Granted Feb 21, 2012·4 cites·12 claims
- 1068US7892468B2Polytetrafluoroethylene slit yarn and method for manufacturing sameJAPAN GORE TEX INC·Filed 2009·Granted Feb 22, 2011·2 cites·7 claims
- 1168US6208066B1Semi-creeping discharge type spark plugNGK SPARK PLUG CO·Filed 1998·Granted Mar 27, 2001·22 cites·37 claims
- 1264US10039187B2Flexible printed wiring substrateNTT ELECTRONICS CORP·Filed 2016·Granted Jul 31, 2018·1 cites·19 claims
- 1360US6827641B2Grinding wheel having synthetic resin layers covering axially opposite end faces of body of the wheelNORITAKE CO LTD·Filed 2003·Granted Dec 7, 2004·7 cites·9 claims
- 1459US7714489B2Spark plug including ground electrode with arcuately curved faceNGK SPARK PLUG CO·Filed 2006·Granted May 11, 2010·2 cites·11 claims
- 1555US6617706B2Ignition systemNGK SPARK PLUG CO·Filed 1999·Granted Sep 9, 2003·13 cites·12 claims
- 1654US7839064B2Spark plug for internal combustion engineNGK SPARK PLUG CO·Filed 2007·Granted Nov 23, 2010·1 cites·11 claims
- 1753US7821186B2Spark 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
- 1853US6641473B2Grinding wheel with abrasive segment chips including at least two abrasive segment chips whose circumferential lengths are different from each otherNORITAKE CO LTD·Filed 2002·Granted Nov 4, 2003·5 cites·14 claims
- 1953US4255498AButton-type air cellTOSHIBA RAY O VAC CO LTD·Filed 1979·Granted Mar 10, 1981·11 cites·11 claims
- 2050US6589304B1Method of bonding porous abrasive solid mass to base member with provision of sealing film on bonding surface of the abrasive solid massNORITAKE CO LTD·Filed 2002·Granted Jul 8, 2003·3 cites·12 claims
- 2150US6046519AStepping motorMITSUBISHI MATERIALS CORP·Filed 1997·Granted Apr 4, 2000·20 cites·5 claims
- 2247US7063608B2Grinding wheel having core body coated with impermeable coatingNORITAKE SUPER ABRASIVE CO LTD·Filed 2003·Granted Jun 20, 2006·3 cites·8 claims
- 2344US6846340B2Method of manufacturing segment-chip-type grinding wheel having large axial lengthNORITAKE CO LTD·Filed 2002·Granted Jan 25, 2005·3 cites·12 claims
- 2443US11062850B2CapacitorPANASONIC IP MAN CO LTD·Filed 2019·Granted Jul 13, 2021·0 cites·4 claims
- 2539US7041382B2Coated steel sheet provided with electrodeposition painting having superior appearanceJFE STEEL CORP·Filed 2003·Granted May 9, 2006·0 cites·12 claims
- 2638US10355530B2Non-contact power supply apparatus, program, method for controlling non-contact power supply apparatus, and non-contact power transmission systemPANASONIC IP MAN CO LTD·Filed 2016·Granted Jul 16, 2019·0 cites·15 claims
- 2732US6244247B1Ignition device for internal combustion enginesNGK SPARK PLUG CO·Filed 1997·Granted Jun 12, 2001·8 cites·12 claims
Join the waitlist — get patent alerts
Get an alert when Kazumasa Yoshida files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →