Ryukichi Takahashi

Follow

Person

Hitachiota, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Nb.sub.3 Al Group superconductor containing ultrafine Nb.sub.2 Al p...
- Patent number 5,628,835
- Issue date May 13, 1997
- Hitachi, Ltd.
- Naofumi Tada
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method for manufacturing Nb.sub.3 Al group superconductor
- Patent number 5,620,532
- Issue date Apr 15, 1997
- Hitachi, Ltd.
- Naofumi Tada
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Superconducting apparatus and method for operating said superconduc...
- Patent number 5,598,710
- Issue date Feb 4, 1997
- Hitachi, Ltd.
- Hiroshi Tomeoku
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Unspliced superconducting coil device with high stability
- Patent number 5,396,205
- Issue date Mar 7, 1995
- Hitachi, Ltd.
- Ryukichi Takahashi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Aluminum-stabilized superconductor and superconducting coil, and me...
- Patent number 5,189,386
- Issue date Feb 23, 1993
- Hitachi, Ltd.
- Naofumi Tada
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Superconducting magnetic levitated train, train system method of co...
- Patent number 5,094,173
- Issue date Mar 10, 1992
- Hitachi, Ltd.
- Naofumi Tada
- B60 - VEHICLES IN GENERAL