Masayoshi Izumi

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Chikujo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of manufacturing a spherical annular seal
- Patent number 5,615,479
- Issue date Apr 1, 1997
- Oiles Corporation
- Takashi Maeda
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Spherical annular seal with outer sliding layer
- Patent number 5,462,291
- Issue date Oct 31, 1995
- Oiles Corporation
- Takashi Maeda
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES