Kenichi Shibuya

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Envelope filling apparatus
- Patent number 8,453,417
- Issue date Jun 4, 2013
- Riso Kagaku Corporation
- Susumu Oshio
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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
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

Patents Applicationslast 30 patents

Information Patent Application
Envelope filling apparatus
- Publication number 20110154778
- Publication date Jun 30, 2011
- Riso Kagaku Corporation
- Susumu Oshio
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES