Hiromu Utsumi

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Katsuta, JP

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Patents Grantslast 30 patents

Information Patent Grant
Combustion gas powered tool
- Patent number 5,199,626
- Issue date Apr 6, 1993
- Hitachi Koki Company Limited
- Tsunehisa Terayama
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Combustion gas powered fastener driving tool
- Patent number 5,090,606
- Issue date Feb 25, 1992
- Hitachi Koki Company, Limited
- Takuji Torii
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Internal-combustion piston driving apparatus having a decompression...
- Patent number 4,913,331
- Issue date Apr 3, 1990
- Hitachi Koki Company, Ltd.
- Hiromu Utsumi
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Combustion gas powered tool
- Patent number 4,773,581
- Issue date Sep 27, 1988
- Hitachi Koki Company, Ltd.
- Shinki Ohtsu
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS