Akio Ishizawa

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Ichikawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Magnetic recording medium
- Patent number 4,540,627
- Issue date Sep 10, 1985
- Kabushiki Kaisha Toshiba
- Akio Ishizawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 4,511,617
- Issue date Apr 16, 1985
- Tokyo Shibaura Denki Kabushiki Kaisha
- Shozo Hideyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording media
- Patent number 4,425,401
- Issue date Jan 10, 1984
- Tokyo Shibaura Denki Kabushiki Kaisha
- Tadashi Ido
- G11 - INFORMATION STORAGE
Information Patent Grant
Polymer coated transition metal powder as electrostatic image toner
- Patent number 4,284,700
- Issue date Aug 18, 1981
- Tokyo Shibaura Denki Kabushiki Kaisha
- Toshihiko Oguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method for production of composite piezoelectric material
- Patent number 4,265,841
- Issue date May 5, 1981
- Tokyo Shibaura Denki Kabushiki Kaisha
- Yoshinori Fujimori
- H01 - BASIC ELECTRIC ELEMENTS