Takashi Shirazawa

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Amagasaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for preparing mica-containing ceramic composite
- Patent number 5,180,532
- Issue date Jan 19, 1993
- Mitsubishi Denki Kabushiki Kaisha
- Tadaki Murakami
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Corrosion resistant metal pipe with electrode for oil wells
- Patent number 4,665,305
- Issue date May 12, 1987
- Mitsubishi Denki Kabushiki Kaisha
- Takashi Shirazawa
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method for producing insulated pipe joint
- Patent number 4,519,970
- Issue date May 28, 1985
- Mitsubishi Denki Kabushiki Kaisha
- Takeo Inoue
- E21 - EARTH DRILLING MINING
Information Patent Grant
Insulated joint and method for producing same
- Patent number 4,445,715
- Issue date May 1, 1984
- Mitsubishi Denki Kabushiki Kaisha
- Takeo Inoue
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Insulated pipe joint
- Patent number 4,411,457
- Issue date Oct 25, 1983
- Mitsubishi Denki Kabushiki Kaisha
- Takeo Inoue
- E21 - EARTH DRILLING MINING