YI

Yasuhiko Ishida

TW The Japan Steel Works: 1 patents #1 of 25Top 4%
Canon: 1 patents #1,019 of 2,200Top 50%
Overall (1997): #19,562 of 185,788Top 15%
2
Patents 1997

Issued Patents 1997

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5696578 Frequency tracking method and apparatus, and Doppler velocity meter using the same Hidejiro Kadowaki, Makoto Takamiya, Jun Ashiwa, Shigeki Kato, Shinji Ueda 1997-12-09
5603828 Filter screen changer for resin extruder Tomomi Kato 1997-02-18