Mitsuru Fujiwara

Person

Ibaraki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Screw-type rotary fluid machine including rotors having treated sur...
- Patent number 5,314,321
- Issue date May 24, 1994
- Hitachi, Ltd.
- Akihiko Yamamoto
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method of treating surfaces of rotors of the screw type rotary machine
- Patent number 5,223,052
- Issue date Jun 29, 1993
- Hitachi, Ltd.
- Akihiko Yamamoto
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Screw compressing apparatus, rotor temperature control apparatus fo...
- Patent number 5,082,427
- Issue date Jan 21, 1992
- Hitachi, Ltd.
- Mitsuru Fujiwara
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Screw fluid machine with high efficiency bore shape
- Patent number 4,963,079
- Issue date Oct 16, 1990
- Hitachi, Ltd.
- Mitsuru Fujiwara
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Screw compressor with scavenging port
- Patent number 4,770,615
- Issue date Sep 13, 1988
- Hitachi, Ltd.
- Mitsuru Fujiwara
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Screw compressor
- Patent number 4,560,333
- Issue date Dec 24, 1985
- Hitachi, Ltd.
- Mitsuru Fujiwara
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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

Mitsuru Fujiwara

Person

Patents Grantslast 30 patents

Screw-type rotary fluid machine including rotors having treated sur...

Method of treating surfaces of rotors of the screw type rotary machine

Screw compressing apparatus, rotor temperature control apparatus fo...

Screw fluid machine with high efficiency bore shape

Screw compressor with scavenging port

Screw compressor

Rotor tooth form for a screw rotor machine

Screw rotor with tooth form produced by thermal deformation and gea...

Screw rotor with specific tooth profile

Male and female screw rotor assembly with specific tooth flanks