YI

Yoshikazu Ichiyama

NI Nidec: 19 patents #31 of 976Top 4%
KL Kura Laboratory: 8 patents #1 of 1Top 100%
NE Nec: 2 patents #5,510 of 14,502Top 40%
Overall (All Time): #125,628 of 4,157,543Top 4%
30
Patents All Time

Issued Patents All Time

Showing 26–30 of 30 patents

Patent #TitleCo-InventorsDate
5791784 Fluid dynamic pressure bearing and motor and magnetic disk apparatus using fluid dynamic pressure bearing 1998-08-11
5707154 Hydrodynamic fluid pressure bearings 1998-01-13
5658080 Motor with a hydro-dynamic bearing 1997-08-19
5287335 Optical disk device for record and reproduction of additional information besides reproduction of basic one 1994-02-15
5166913 Optical disk device for record and reproduction of additional information besides reproducing of basic information 1992-11-24