YS

Yoshifumi Sakurai

OC Olympus Optical Co.: 4 patents #789 of 2,334Top 35%
KK Kanegafuchi Kagaku Kogyo: 2 patents #226 of 691Top 35%
KK Kureha Kagaku Kogyo: 1 patents #332 of 607Top 55%
UN Unknown: 1 patents #29,356 of 83,584Top 40%
Canon: 1 patents #14,899 of 19,416Top 80%
Overall (All Time): #671,568 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
4675239 Perpendicular magnetization film Koji Saiki 1987-06-23
4670353 Magnetooptical recording medium 1987-06-02
4588647 Perpendicular magnetization film and the preparation thereof Takuhisa Numata, Kazuo Saito, Koji Saiki 1986-05-13
4516222 Laminated magnetic bubble device Takuhisa Numata 1985-05-07
4420781 Magnetic head with an amorphous Hall element 1983-12-13
4393427 Multichannel magnetic head 1983-07-12
4388661 Multichannel magnetic head and a manufacturing method therefor 1983-06-14
4333991 Magnetic garnet film and manufacturing method therefor 1982-06-08