AO

Atsuko Ohkawa

HI Hitachi: 4 patents #8,942 of 28,497Top 35%
Overall (All Time): #1,275,486 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6198601 Thin film magnetic head having non-linear tapered rails Yasuo Hira, Tamaki Toba, Hirotaka Imayama, Masayasu Fujisawa, Kazuo Nate +5 more 2001-03-06
5910864 Thin film magnetic head having non-linear rails Yasuo Hira, Tamaki Toba, Hirotaka Imayama, Masayasu Fujisawa, Kazuo Nate +5 more 1999-06-08
5567333 Thin film magnetic head, process for production thereof Yasuo Hira, Tamaki Toba, Hirotaka Imayama, Masayasu Fujisawa, Kazuo Nate +5 more 1996-10-22
5371582 Thickness/depth measuring apparatus and method for measuring the thickness of a film and the depth of a groove Tamaki Toba, Yasuo Hira, Masayasu Fujisawa, Isao Hashimoto 1994-12-06