Yoshihisa Ujita

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Wakayama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Surface conditioning prior to chemical conversion treatment of a st...
- Patent number 7,666,266
- Issue date Feb 23, 2010
- Sumitomo Metal Industries, Ltd.
- Masaru Izawa
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...