Inventor
TAKAOKA KATSUYA
JP25 patents
⚠️ This page may combine multiple inventors who share the name “TAKAOKA KATSUYA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NGK SPARK PLUG CO
17 patentsUS10090646B2Oct 2, 2018
Spark plug
NGK SPARK PLUG CO15 citations83
US9997894B2Jun 12, 2018
Spark plug having a resistor element
NGK SPARK PLUG CO4 citations72
US9595814B2Mar 14, 2017
Spark plug
NGK SPARK PLUG CO4 citations72
US9590395B2Mar 7, 2017
Spark plug
NGK SPARK PLUG CO3 citations72
US9362722B2Jun 7, 2016
Spark plug with improved withstand voltage characteristics and high mechanical strength at high temperatures
NGK SPARK PLUG CO3 citations66
US9160145B2Oct 13, 2015
Insulator for spark plug and spark plug
NGK SPARK PLUG CO2 citations62
US12273965B2Apr 8, 2025
Holding device and method of manufacturing holding device
NGK SPARK PLUG CO0 citations57
US12114402B2Oct 8, 2024
Holding device and method of manufacturing holding device
NGK SPARK PLUG CO0 citations57
US9385511B2Jul 5, 2016
Spark plug
NGK SPARK PLUG CO1 citations52
US9373940B2Jun 21, 2016
Spark plug
NGK SPARK PLUG CO1 citations51
US9281662B2Mar 8, 2016
Spark plug
NGK SPARK PLUG CO0 citations51
US12110577B2Oct 8, 2024
Dust core
NGK SPARK PLUG CO0 citations49
US10153622B1Dec 11, 2018
Spark plug having the thickness of a magnetic member without excessively narrowing an electrode member
NGK SPARK PLUG CO1 citations49
US9653888B2May 16, 2017
Spark plug
NGK SPARK PLUG CO1 citations49
US9466951B2Oct 11, 2016
Spark plug
NGK SPARK PLUG CO0 citations41
US10277012B2Apr 30, 2019
Spark plug including a magnetic substance and a conductor disposed thereon
NGK SPARK PLUG CO0 citations40
US10270228B2Apr 23, 2019
Spark plug
NGK SPARK PLUG CO0 citations40
KURONO HIROKAZU
4 patentsUS8564184B2Oct 22, 2013
Spark plug and process for producing spark plug
KURONO HIROKAZU4 citations61
US8278809B2Oct 2, 2012
Spark plug with alumina-based insulator
KURONO HIROKAZU2 citations61
US8093791B2Jan 10, 2012
Spark plug having particular insulator
KURONO HIROKAZU5 citations61
US8390183B2Mar 5, 2013
Spark plug and method for manufacturing spark plug
KURONO HIROKAZU3 citations59