Tetsu Yamanaka

Follow

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Process for producing a heat sensitive stencil sheet
- Patent number 5,622,109
- Issue date Apr 22, 1997
- Riso Kagaku Corporation
- Shoichi Ikejima
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Cylindrical drum assembly including a stencil sheet for use with a...
- Patent number 5,501,146
- Issue date Mar 26, 1996
- Riso Kagaku Corporation
- Tetsu Yamanaka
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Heat-sensitive stencil sheets and process
- Patent number 5,498,464
- Issue date Mar 12, 1996
- Riso Kagaku Corporation
- Shoichi Ikejima
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS