Tukasa Fujii

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Patents Grantslast 30 patents

Information Patent Grant
Method of cleaning carbon member contaminated with inorganic deposits
- Patent number 5,069,724
- Issue date Dec 3, 1991
- Central Glass Company, Limited
- Yoshiyuki Kobayashi
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Method of refining nitrogen trifluoride gas
- Patent number 5,069,887
- Issue date Dec 3, 1991
- Central Glass Company, Limited
- Takashi Suenaga
- C01 - INORGANIC CHEMISTRY