Tetsuzo Matsunaga

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Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Rotor tooth form for a screw rotor machine
- Patent number 4,492,546
- Issue date Jan 8, 1985
- Hitachi, Ltd.
- Katsuhiko Kasuya
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Screw rotor with tooth form produced by thermal deformation and gea...
- Patent number 4,475,878
- Issue date Oct 9, 1984
- Hitachi, Ltd.
- Katsuhiko Kasuya
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Screw rotor with specific tooth profile
- Patent number 4,406,602
- Issue date Sep 27, 1983
- Hitachi, Ltd.
- Katsuhiko Kasuya
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Male and female screw rotor assembly with specific tooth flanks
- Patent number 4,401,420
- Issue date Aug 30, 1983
- Hitachi, Ltd.
- Katsuhiko Kasuya
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES