Inventor

YOSHIZAKI HIROTOSHI

JP4 patents

⚠️ This page may combine multiple inventors who share the name “YOSHIZAKI HIROTOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

TOYOTA MOTOR CO LTD

1 patent

US7367303B2May 6, 2008

Crankshaft of in-line four-cylinder engine

TOYOTA MOTOR CO LTD14 citations82

NGK SPARK PLUG CO

1 patent

US9083155B2Jul 14, 2015

Spark plug with an improved separation resistance of a noble metal tip

NGK SPARK PLUG CO3 citations57

YOSHIZAKI HIROTOSHI

1 patent

US8766521B2Jul 1, 2014

Spark plug

YOSHIZAKI HIROTOSHI2 citations54

NITERRA CO LTD

1 patent

US12449522B2Oct 21, 2025

Ultrasonic transducer

NITERRA CO LTD0 citations52