Yutaka Nishikawa

Follow

Person

Higashimurayama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Method of and apparatus for forming and transporting mud clogs
- Patent number 5,020,858
- Issue date Jun 4, 1991
- TOA Corporation
- Yutaka Nishikawa
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Method of and apparatus for dredging sludge in high density
- Patent number 4,903,419
- Issue date Feb 27, 1990
- TOA Corporation
- Yutaka Nishikawa
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING