Koichi Okusawa

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Device and method for dot-matrix thermal recording
- Patent number 5,592,209
- Issue date Jan 7, 1997
- Riso Kagaku Corporation
- Takanori Hasegawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Thermal stencil master plate and method for processing the same
- Patent number 5,522,313
- Issue date Jun 4, 1996
- Riso Kagaku Corporation
- Koichi Okusawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Thermal stencil master plate and method for processing the same
- Patent number 5,243,906
- Issue date Sep 14, 1993
- Riso Kagaku Corporation
- Koichi Okusawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS