Masatsuyo Maruo

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Patents Grantslast 30 patents

Information Patent Grant
Titanium oxide particles and method of producing same
- Patent number 5,624,667
- Issue date Apr 29, 1997
- Ishihara Sangyo Kaisha, Ltd.
- Masatsuyo Maruo
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Titanium oxide particles and method of scavenging noxious materials
- Patent number 5,480,636
- Issue date Jan 2, 1996
- Ishihara Sangyo Kaisha, Ltd.
- Masatsuyo Maruo
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Process for producing magnetic metal powder for magnetic recording
- Patent number 5,143,542
- Issue date Sep 1, 1992
- Ishihara Sangyo Kaisha, Ltd.
- Kokichi Miyazawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Process for producing magnetic powder and product
- Patent number 4,539,261
- Issue date Sep 3, 1985
- Ishihara Sangyo Kaisha, Ltd.
- Kazuo Nakata
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Liquid developer for color electrophotography
- Patent number 4,275,136
- Issue date Jun 23, 1981
- Ishihara Sangyo Kaisha, Ltd.
- Sadao Murasawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Liquid developer
- Patent number 4,144,184
- Issue date Mar 13, 1979
- Ishihara Sangyo Kaisha, Ltd.
- Kei Takahata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY