Hisashi Wakasugi

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Saitama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Scratch color-developable ink and invisible information printed sheet
- Patent number 8,283,285
- Issue date Oct 9, 2012
- Mitsubishi Paper Mills Limited
- Hisashi Wakasugi
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS

Patents Applicationslast 30 patents

Information Patent Application
SCRATCH COLOR-DEVELOPABLE INK AND INVISIBLE INFORMATION PRINTED SHEET
- Publication number 20100021702
- Publication date Jan 28, 2010
- MITSUBISHI PAPER INK MFG. CO., LTD.
- Hisashi Wakasugi
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS