Shigetake Akanuma

Follow

Person

Chigasaki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Hydraulic rock splitter
- Patent number 4,571,002
- Issue date Feb 18, 1986
- Kabushiki Kaisha Komatsu Seisakusho
- Shigetake Akanuma
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus for mechanically breaking up rock
- Patent number 4,566,736
- Issue date Jan 28, 1986
- Kabushiki Kaisha Komatsu Seisakusho
- Shigetake Akanuma
- E21 - EARTH DRILLING MINING
Information Patent Grant
Power-driven, wedge-operated rock splitter
- Patent number 4,474,410
- Issue date Oct 2, 1984
- Kabushiki Kaisha Komatsu Seisakusho
- Koji Ogaki
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Method and apparatus for fracturing rock beds
- Patent number 4,363,518
- Issue date Dec 14, 1982
- Kabushiki Kaisha Komatsu Seisakusho
- Joji Nakamura
- E21 - EARTH DRILLING MINING