Ryuji Nishiyama

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Two-component developer and image-forming method for which the deve...
- Patent number 5,593,806
- Issue date Jan 14, 1997
- Matsushita Electric Industrial Co., Ltd.
- Ryuji Nishiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Magnetic head and method for preparing the same
- Patent number 4,170,032
- Issue date Oct 2, 1979
- Matsushita Electric Industrial Co., Ltd.
- Kazuo Yokoyama
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES