YI

Yasutake Ishino

DE Denso: 5 patents #2,617 of 11,792Top 25%
NC Nippondenso Co.: 1 patents #1,765 of 3,479Top 55%
Overall (All Time): #868,292 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
7723906 Spark plug designed to minimize drop in insulation resistance Satoru Kadowaki 2010-05-25
6956319 Structure of spark plug designed to provide higher wear resistance to center electrode and production method thereof Ken Hanashi 2005-10-18
6794803 Spark plug for an internal combustion engine Tsunenobu Hori, Hironori Osamura, Akira Mitsuhashi, Mineo Okuma 2004-09-21
6552476 Spark plug for internal combustion engine having better self-cleaning function Ken Hanashi, Hironori Osamura 2003-04-22
6316868 Spark plug for internal combustion engine having better self-cleaning function Hironori Osamura, Makoto Yatou 2001-11-13
4937484 Sparking plug 1990-06-26