Tatsuo Yoshii

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Wakayama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Color CRT mask frame, a steel sheet used therefor and a manufacturi...
- Patent number 6,806,631
- Issue date Oct 19, 2004
- Sumitomo Metal Industries, Ltd.
- Tatsuo Yoshii
- C21 - METALLURGY OF IRON
Information Patent Grant
Steel sheet used for color CRT mask frame and a manufacturing metho...
- Patent number 6,699,334
- Issue date Mar 2, 2004
- Sumitomo Metal Industries, Ltd.
- Tatsuo Yoshii
- C21 - METALLURGY OF IRON

Patents Applicationslast 30 patents

Information Patent Application
Color CRT mask frame, a steel sheet used therefor and a manufacturi...
- Publication number 20040095052
- Publication date May 20, 2004
- SUMITOMO METAL INDUSTRIES, LTD.
- Tatsuo Yoshii
- C21 - METALLURGY OF IRON
Information Patent Application
Color CRT mask frame, a steel sheet used therefor and a manufacturi...
- Publication number 20020079028
- Publication date Jun 27, 2002
- Tatsuo Yoshii
- C21 - METALLURGY OF IRON