Shoichi Sugiyama

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Gotenba, JP

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Patents Grantslast 30 patents

Information Patent Grant
Thermosensitive stencil paper
- Patent number 5,219,637
- Issue date Jun 15, 1993
- Ricoh Company, Ltd.
- Fumiaki Arai
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Thermosensitive stencil paper
- Patent number 5,188,881
- Issue date Feb 23, 1993
- Ricoh Company, Ltd.
- Shoichi Sugiyama
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS