Takuji Koyanagi

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Nabari, JP

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Patents Grantslast 30 patents

Information Patent Grant
Lightweight and dimensionally accurate resin concrete molded products
- Patent number 4,463,041
- Issue date Jul 31, 1984
- Ina Seito Co., Ltd.
- Koyanagi Takuji
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Reinforced plastic products with decorated surfaces
- Patent number 4,126,719
- Issue date Nov 21, 1978
- Ina Seito Co., Ltd.
- Takuji Koyanagi
- B44 - DECORATIVE ARTS