Tomoji Ishiguro

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Aichi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Insulator on spark plug electrode coated with zirconium and vanadiu...
- Patent number 4,267,483
- Issue date May 12, 1981
- Kabushiki Kaisha Toyota Chuo
- Koichi Nakajima
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Spark plug having vanadium oxide islands on central insulator
- Patent number 4,250,426
- Issue date Feb 10, 1981
- Kabushiki Kaisha Toyota Chuo Kenkyusho and Nippondenso Co., Ltd.
- Koichi Nakajima
- H01 - BASIC ELECTRIC ELEMENTS