KY

Keiichi Yoshizawa

TA Tdk Electronics Ag: 19 patents #2 of 503Top 1%
SC Seikosha Co.: 9 patents #33 of 312Top 15%
Tdk: 4 patents #1,273 of 3,796Top 35%
Overall (All Time): #114,516 of 4,157,543Top 3%
32
Patents All Time

Issued Patents All Time

Showing 26–32 of 32 patents

Patent #TitleCo-InventorsDate
D262876 Casette tape 1982-02-02
D260339 Storage unit 1981-08-25
D258585 Magnetic head eraser 1981-03-17
4257079 Apparatus for rewinding magnetic tape in video cassette 1981-03-17
D258287 Video tape cassette Hidehisa Hashimoto 1981-02-17
4223613 Sectional rack 1980-09-23
4218722 Compact hand-held demagnetizing device 1980-08-19