Tsutomu Negama

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Percutaneously absorbable crosslinked polyvinylpyrrolidone eperison...
- Patent number 5,252,588
- Issue date Oct 12, 1993
- Sekisui Kagaku Kogyo Kabushiki Kaisha
- Masato Azuma
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE