Sadao Niibe

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Chiba, JP

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Patents Grantslast 30 patents

Information Patent Grant
Sludge treatment tank thereof construction method thereof
- Patent number 5,759,849
- Issue date Jun 2, 1998
- The Zenitaka Corporation
- Keitaro Aoyagi
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Sludge treatment tank and construction method thereof
- Patent number 5,672,506
- Issue date Sep 30, 1997
- The Zenitaka Corporation
- Keitaro Aoyagi
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL