EI

Eizo Ishikawa

HL Hitachi Shipbuilding & Engineering Company Limited: 1 patents #37 of 117Top 35%
MK Mitsui Kinzoku Kogyo: 1 patents #47 of 99Top 50%
📍 Ibaraki, JP: #2,661 of 6,779 inventorsTop 40%
Overall (All Time): #1,641,195 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
5825036 Electromagnetic wave radiation method and device 1998-10-20
4977012 Ceramic wiring substrate blank material and process for production thereof 1990-12-11
4229157 System for controlling feed of waste gas to ground flare Takusen Ito, Masami Murakami, Keiichi Otsuka 1980-10-21