Toshiaki Nagai

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Hadano, JP

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Patents Grantslast 30 patents

Information Patent Grant
Non-lubricated screw machine with a rotor having a taper and varied...
- Patent number 5,064,363
- Issue date Nov 12, 1991
- Hitachi, Ltd.
- Toshiaki Nagai
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Nonlubricated screw fluid machine
- Patent number 4,952,125
- Issue date Aug 28, 1990
- Hitachi, Ltd.
- Toshiaki Nagai
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Rotors for a screw fluid machine
- Patent number 4,915,604
- Issue date Apr 10, 1990
- Hitachi, Ltd.
- Toshiaki Nagai
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Screw rotor tooth profile
- Patent number 4,671,751
- Issue date Jun 9, 1987
- Hitachi, Ltd.
- Katsuhiko Kasuya
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES