Keiichi Kuniya

Person

Hitachi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Rollers for rolling mills
- Patent number 4,941,251
- Issue date Jul 17, 1990
- Hitachi, Ltd.
- Masahisa Sobue
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Rollers for rolling mills
- Patent number 4,839,949
- Issue date Jun 20, 1989
- Hitachi, Ltd.
- Masahisa Sobue
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Process for producing zirconium-based alloy
- Patent number 4,689,091
- Issue date Aug 25, 1987
- Hitachi, Ltd.
- Toshimi Yoshida
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for producing zirconium-based alloy and the product thereof
- Patent number 4,678,521
- Issue date Jul 7, 1987
- Hitachi, Ltd.
- Toshimi Yoshida
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Zirconium alloy having superior corrosion resistance
- Patent number 4,664,727
- Issue date May 12, 1987
- Hitachi, Ltd.
- Masahisa Inagaki
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Surge-absorberless vacuum circuit interrupter
- Patent number 4,551,596
- Issue date Nov 5, 1985
- Hitachi, Ltd.
- Ryuji Watanabe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Vacuum circuit breaker
- Patent number 4,547,639
- Issue date Oct 15, 1985
- Hitachi, Ltd.
- Ryuji Watanabe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Ceramic substrate with metal plate
- Patent number 4,497,875
- Issue date Feb 5, 1985
- Hitachi, Ltd.
- Hideo Arakawa
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Stacked structure having matrix-fibered composite layers and a meta...
- Patent number 4,482,912
- Issue date Nov 13, 1984
- Hitachi, Ltd.
- Akio Chiba
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method of production of composite billet for fuel cladding tube
- Patent number 4,478,363
- Issue date Oct 23, 1984
- Hitachi, Ltd.
- Hiromichi Imahashi
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Copper matrix electrode having carbon fibers therein
- Patent number 4,470,063
- Issue date Sep 4, 1984
- Hitachi, Ltd.
- Hideo Arakawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electrodes of vacuum circuit breaker
- Patent number 4,347,413
- Issue date Aug 31, 1982
- Hitachi, Ltd.
- Ryuji Watanabe
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method of fabricating electrode plate for supporting semiconductor...
- Patent number 4,254,548
- Issue date Mar 10, 1981
- Hitachi, Ltd.
- Hideo Arakawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Light source excited by high frequency for Zeeman effect atomic abs...
- Patent number 4,253,038
- Issue date Feb 24, 1981
- Hitachi, Ltd.
- Akira Hosoya
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of producing a vacuum circuit breaker
- Patent number 4,231,814
- Issue date Nov 4, 1980
- Hitachi, Ltd.
- Ryuji Watanabe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Vacuum-type circuit breaker
- Patent number 4,229,631
- Issue date Oct 21, 1980
- Hitachi, Ltd.
- Hideo Arakawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Composite joint system including composite structure of carbon fibe...
- Patent number 4,226,917
- Issue date Oct 7, 1980
- Hitachi, Ltd.
- Masao Tsuruoka
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Semiconductor device
- Patent number 4,196,442
- Issue date Apr 1, 1980
- Hitachi, Ltd.
- Keiichi Kuniya
- H01 - BASIC ELECTRIC ELEMENTS

Keiichi Kuniya

Person

Patents Grantslast 30 patents

Rollers for rolling mills

Rollers for rolling mills

Process for producing zirconium-based alloy

Process for producing zirconium-based alloy and the product thereof

Zirconium alloy having superior corrosion resistance

Surge-absorberless vacuum circuit interrupter

Vacuum circuit breaker

Ceramic substrate with metal plate

Stacked structure having matrix-fibered composite layers and a meta...

Method of production of composite billet for fuel cladding tube

Copper matrix electrode having carbon fibers therein

Electrodes of vacuum circuit breaker

Method of fabricating electrode plate for supporting semiconductor...

Light source excited by high frequency for Zeeman effect atomic abs...

Method of producing a vacuum circuit breaker

Vacuum-type circuit breaker

Composite joint system including composite structure of carbon fibe...

Semiconductor device