Akio Hyugaji

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Resin for high-refractivity lenses and lenses made of same resin
- Patent number 4,522,993
- Issue date Jun 11, 1985
- Mitsui Toatsu Chemicals, Incorporated
- Katsuyoshi Sasagawa
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...