Hiroki Yamazaki

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Patents Grantslast 30 patents

Information Patent Grant
Inner roller and outer roller in internal-meshing planetary gear co...
- Patent number 6,155,950
- Issue date Dec 5, 2000
- Sumitomo Heavy Industries, Ltd.
- Kiyoji Minegishi
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method of fabricating inner roller and outer roller in internal-mes...
- Patent number 5,992,020
- Issue date Nov 30, 1999
- Sumitomo Heavy Industries, Ltd.
- Kiyoji Minegishi
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Methods of fabricating inner roller and outer roller in internal-me...
- Patent number 5,867,902
- Issue date Feb 9, 1999
- Sumitomo Heavy Industries Ltd.
- Kiyoji Minegishi
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR