Keiji Hasegawa

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Metal-collecting apparatus and method for elution and recovery of m...
- Patent number 6,852,233
- Issue date Feb 8, 2005
- Ebara Corporation
- Takanobu Sugo
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method for concentrating black liquor with oxidizing followed by CO...
- Patent number 4,911,787
- Issue date Mar 27, 1990
- Research Association of Pulp and Paper Technology
- Akira Shimokura
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE