Hitoshi Ohya

Follow

Person

Tsukuba, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Method of separating and recovering valuable metals and non-metals...
- Patent number 5,630,554
- Issue date May 20, 1997
- Dowa Mining Co., Ltd.
- Chiaki Izumikawa
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Multi-chamber inclined ball mill
- Patent number 4,982,906
- Issue date Jan 8, 1991
- Agency of Industrial Science and Technology
- Hiroshi Sakamoto
- B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...